prepare release 0.14.0

improve the code coverage
tests: add edge case tests for 0 years and 0 months
2026-06-10 16:13:15 -07:00 · 2026-02-14 18:55:26 +01:00 · 2026-02-14 18:19:31 +01:00 · 2026-02-14 18:19:31 +01:00 · 2026-02-14 18:19:31 +01:00 · 2026-02-14 18:19:31 +01:00
10 changed files with 667 additions and 210 deletions
@@ -14,7 +14,7 @@ jobs:
      matrix:
        os: [ubuntu-latest, macOS-latest, windows-latest]
    steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
      - uses: dtolnay/rust-toolchain@stable
      - run: cargo check

@@ -25,7 +25,7 @@ jobs:
      matrix:
        os: [ubuntu-latest, macOS-latest, windows-latest]
    steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
      - uses: dtolnay/rust-toolchain@stable
      - run: cargo test

@@ -33,7 +33,7 @@ jobs:
    name: cargo fmt --all -- --check
    runs-on: ubuntu-latest
    steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
      - uses: dtolnay/rust-toolchain@stable
      - run: rustup component add rustfmt
      - run: cargo fmt --all -- --check
@@ -45,7 +45,7 @@ jobs:
      matrix:
        os: [ubuntu-latest, macOS-latest, windows-latest]
    steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
      - uses: dtolnay/rust-toolchain@stable
      - run: rustup component add clippy
      - run: cargo clippy --all-targets -- -D warnings
@@ -57,7 +57,7 @@ jobs:
      matrix:
        os: [ubuntu-latest, macOS-latest, windows-latest]
    steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
      - uses: dtolnay/rust-toolchain@stable
        with:
          toolchain: ${{ env.RUST_MIN_SRV }}
@@ -74,7 +74,7 @@ jobs:
          - { os: macos-latest   , features: macos }
          - { os: windows-latest , features: windows }
    steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
    - name: Initialize workflow variables
      id: vars
      shell: bash
@@ -134,17 +134,19 @@ jobs:
        # display coverage files
        grcov . --binary-path="${COVERAGE_REPORT_DIR}" --output-type files --ignore build.rs --ignore "vendor/*" --ignore "/*" --ignore "[a-zA-Z]:/*" --excl-br-line "^\s*((debug_)?assert(_eq|_ne)?!|#\[derive\()" | sort --unique
        # generate coverage report
-        grcov . --binary-path="${COVERAGE_REPORT_DIR}" --output-type lcov --output-path "${COVERAGE_REPORT_FILE}" --branch --ignore build.rs --ignore "vendor/*" --ignore "/*" --ignore "[a-zA-Z]:/*" --excl-br-line "^\s*((debug_)?assert(_eq|_ne)?!|#\[derive\()"
+        grcov . --binary-path="${COVERAGE_REPORT_DIR}" --output-type lcov --output-path "${COVERAGE_REPORT_FILE}" --branch --ignore build.rs --ignore "vendor/*" --ignore "/*" --ignore "[a-zA-Z]:/*" --excl-br-line "^\s*((debug_)?assert(_eq|_ne)?!|#\[derive\()" --source-dir .
        echo "report=${COVERAGE_REPORT_FILE}" >> $GITHUB_OUTPUT
    - name: Upload coverage results (to Codecov.io)
      uses: codecov/codecov-action@v5
      with:
        token: ${{ secrets.CODECOV_TOKEN }}
        files: ${{ steps.coverage.outputs.report }}
-        ## flags: IntegrationTests, UnitTests, ${{ steps.vars.outputs.CODECOV_FLAGS }}
        flags: ${{ steps.vars.outputs.CODECOV_FLAGS }}
        name: codecov-umbrella
        fail_ci_if_error: false
+        verbose: true
+        directory: ./
+        root_dir: ./

  fuzz:
    name: Run the fuzzers
@@ -152,7 +154,7 @@ jobs:
    env:
      RUN_FOR: 60
    steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
    - uses: dtolnay/rust-toolchain@nightly
    - name: Install `cargo-fuzz`
      run: cargo install cargo-fuzz
@@ -80,9 +80,9 @@ checksum = "0cc23270f6e1808e30a928bdc84dea0b9b4136a8bc82338574f23baf47bbd280"

 [[package]]
 name = "hashbrown"
-version = "0.16.0"
+version = "0.16.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5419bdc4f6a9207fbeba6d11b604d481addf78ecd10c11ad51e76c2f6482748d"
+checksum = "841d1cc9bed7f9236f321df977030373f4a4163ae1a7dbfe1a51a2c1a51d9100"

 [[package]]
 name = "indexmap"
@@ -96,9 +96,9 @@ dependencies = [

 [[package]]
 name = "jiff"
-version = "0.2.16"
+version = "0.2.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "49cce2b81f2098e7e3efc35bc2e0a6b7abec9d34128283d7a26fa8f32a6dbb35"
+checksum = "c867c356cc096b33f4981825ab281ecba3db0acefe60329f044c1789d94c6543"
 dependencies = [
 "jiff-static",
 "jiff-tzdb-platform",
@@ -111,9 +111,9 @@ dependencies = [

 [[package]]
 name = "jiff-static"
-version = "0.2.16"
+version = "0.2.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "980af8b43c3ad5d8d349ace167ec8170839f753a42d233ba19e08afe1850fa69"
+checksum = "f7946b4325269738f270bb55b3c19ab5c5040525f83fd625259422a9d25d9be5"
 dependencies = [
 "proc-macro2",
 "quote",
@@ -158,7 +158,7 @@ dependencies = [

 [[package]]
 name = "parse_datetime"
-version = "0.13.2"
+version = "0.14.0"
 dependencies = [
 "jiff",
 "num-traits",
@@ -195,9 +195,9 @@ dependencies = [

 [[package]]
 name = "proc-macro-crate"
-version = "3.2.0"
+version = "3.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8ecf48c7ca261d60b74ab1a7b20da18bede46776b2e55535cb958eb595c5fa7b"
+checksum = "219cb19e96be00ab2e37d6e299658a0cfa83e52429179969b0f0121b4ac46983"
 dependencies = [
 "toml_edit",
 ]
@@ -213,9 +213,9 @@ dependencies = [

 [[package]]
 name = "quote"
-version = "1.0.41"
+version = "1.0.42"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ce25767e7b499d1b604768e7cde645d14cc8584231ea6b295e9c9eb22c02e1d1"
+checksum = "a338cc41d27e6cc6dce6cefc13a0729dfbb81c262b1f519331575dd80ef3067f"
 dependencies = [
 "proc-macro2",
 ]
@@ -327,9 +327,9 @@ checksum = "7a2ae44ef20feb57a68b23d846850f861394c2e02dc425a50098ae8c90267589"

 [[package]]
 name = "syn"
-version = "2.0.108"
+version = "2.0.110"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "da58917d35242480a05c2897064da0a80589a2a0476c9a3f2fdc83b53502e917"
+checksum = "a99801b5bd34ede4cf3fc688c5919368fea4e4814a4664359503e6015b280aea"
 dependencies = [
 "proc-macro2",
 "quote",
@@ -338,112 +338,60 @@ dependencies = [

 [[package]]
 name = "toml_datetime"
-version = "0.6.11"
+version = "0.7.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "22cddaf88f4fbc13c51aebbf5f8eceb5c7c5a9da2ac40a13519eb5b0a0e8f11c"
+checksum = "a197c0ec7d131bfc6f7e82c8442ba1595aeab35da7adbf05b6b73cd06a16b6be"
+dependencies = [
+ "serde_core",
+]

 [[package]]
 name = "toml_edit"
-version = "0.22.27"
+version = "0.23.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "41fe8c660ae4257887cf66394862d21dbca4a6ddd26f04a3560410406a2f819a"
+checksum = "c2ad0b7ae9cfeef5605163839cb9221f453399f15cfb5c10be9885fcf56611f9"
 dependencies = [
 "indexmap",
 "toml_datetime",
- "toml_write",
+ "toml_parser",
 "winnow",
 ]

 [[package]]
-name = "toml_write"
-version = "0.1.2"
+name = "toml_parser"
+version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5d99f8c9a7727884afe522e9bd5edbfc91a3312b36a77b5fb8926e4c31a41801"
+checksum = "b551886f449aa90d4fe2bdaa9f4a2577ad2dde302c61ecf262d80b116db95c10"
+dependencies = [
+ "winnow",
+]

 [[package]]
 name = "unicode-ident"
-version = "1.0.20"
+version = "1.0.22"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "462eeb75aeb73aea900253ce739c8e18a67423fadf006037cd3ff27e82748a06"
+checksum = "9312f7c4f6ff9069b165498234ce8be658059c6728633667c526e27dc2cf1df5"
+
+[[package]]
+name = "windows-link"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f0805222e57f7521d6a62e36fa9163bc891acd422f971defe97d64e70d0a4fe5"

 [[package]]
 name = "windows-sys"
-version = "0.59.0"
+version = "0.61.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1e38bc4d79ed67fd075bcc251a1c39b32a1776bbe92e5bef1f0bf1f8c531853b"
+checksum = "ae137229bcbd6cdf0f7b80a31df61766145077ddf49416a728b02cb3921ff3fc"
 dependencies = [
- "windows-targets",
+ "windows-link",
 ]

-[[package]]
-name = "windows-targets"
-version = "0.52.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9b724f72796e036ab90c1021d4780d4d3d648aca59e491e6b98e725b84e99973"
-dependencies = [
- "windows_aarch64_gnullvm",
- "windows_aarch64_msvc",
- "windows_i686_gnu",
- "windows_i686_gnullvm",
- "windows_i686_msvc",
- "windows_x86_64_gnu",
- "windows_x86_64_gnullvm",
- "windows_x86_64_msvc",
-]
-
-[[package]]
-name = "windows_aarch64_gnullvm"
-version = "0.52.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "32a4622180e7a0ec044bb555404c800bc9fd9ec262ec147edd5989ccd0c02cd3"
-
-[[package]]
-name = "windows_aarch64_msvc"
-version = "0.52.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "09ec2a7bb152e2252b53fa7803150007879548bc709c039df7627cabbd05d469"
-
-[[package]]
-name = "windows_i686_gnu"
-version = "0.52.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8e9b5ad5ab802e97eb8e295ac6720e509ee4c243f69d781394014ebfe8bbfa0b"
-
-[[package]]
-name = "windows_i686_gnullvm"
-version = "0.52.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0eee52d38c090b3caa76c563b86c3a4bd71ef1a819287c19d586d7334ae8ed66"
-
-[[package]]
-name = "windows_i686_msvc"
-version = "0.52.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "240948bc05c5e7c6dabba28bf89d89ffce3e303022809e73deaefe4f6ec56c66"
-
-[[package]]
-name = "windows_x86_64_gnu"
-version = "0.52.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "147a5c80aabfbf0c7d901cb5895d1de30ef2907eb21fbbab29ca94c5b08b1a78"
-
-[[package]]
-name = "windows_x86_64_gnullvm"
-version = "0.52.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "24d5b23dc417412679681396f2b49f3de8c1473deb516bd34410872eff51ed0d"
-
-[[package]]
-name = "windows_x86_64_msvc"
-version = "0.52.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "589f6da84c646204747d1270a2a5661ea66ed1cced2631d546fdfb155959f9ec"
-
 [[package]]
 name = "winnow"
-version = "0.7.13"
+version = "0.7.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "21a0236b59786fed61e2a80582dd500fe61f18b5dca67a4a067d0bc9039339cf"
+checksum = "5a5364e9d77fcdeeaa6062ced926ee3381faa2ee02d3eb83a5c27a8825540829"
 dependencies = [
 "memchr",
 ]
@@ -1,7 +1,7 @@
 [package]
 name = "parse_datetime"
 description = "parsing human-readable time strings and converting them to a DateTime"
-version = "0.13.2"
+version = "0.14.0"
 edition = "2021"
 license = "MIT"
 repository = "https://github.com/uutils/parse_datetime"
@@ -16,9 +16,9 @@ checksum = "c08606f8c3cbf4ce6ec8e28fb0014a2c086708fe954eaa885384a6165172e7e8"

 [[package]]
 name = "cc"
-version = "1.2.43"
+version = "1.2.47"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "739eb0f94557554b3ca9a86d2d37bebd49c5e6d0c1d2bda35ba5bdac830befc2"
+checksum = "cd405d82c84ff7f35739f175f67d8b9fb7687a0e84ccdc78bd3568839827cf07"
 dependencies = [
 "find-msvc-tools",
 "jobserver",
@@ -34,9 +34,9 @@ checksum = "9330f8b2ff13f34540b44e946ef35111825727b38d33286ef986142615121801"

 [[package]]
 name = "find-msvc-tools"
-version = "0.1.4"
+version = "0.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "52051878f80a721bb68ebfbc930e07b65ba72f2da88968ea5c06fd6ca3d3a127"
+checksum = "3a3076410a55c90011c298b04d0cfa770b00fa04e1e3c97d3f6c9de105a03844"

 [[package]]
 name = "fuzz_parse_datetime"
@@ -60,24 +60,24 @@ dependencies = [

 [[package]]
 name = "jiff"
-version = "0.2.15"
+version = "0.2.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "be1f93b8b1eb69c77f24bbb0afdf66f54b632ee39af40ca21c4365a1d7347e49"
+checksum = "49cce2b81f2098e7e3efc35bc2e0a6b7abec9d34128283d7a26fa8f32a6dbb35"
 dependencies = [
 "jiff-static",
 "jiff-tzdb-platform",
 "log",
 "portable-atomic",
 "portable-atomic-util",
- "serde",
+ "serde_core",
 "windows-sys",
 ]

 [[package]]
 name = "jiff-static"
-version = "0.2.15"
+version = "0.2.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "03343451ff899767262ec32146f6d559dd759fdadf42ff0e227c7c48f72594b4"
+checksum = "980af8b43c3ad5d8d349ace167ec8170839f753a42d233ba19e08afe1850fa69"
 dependencies = [
 "proc-macro2",
 "quote",
@@ -117,9 +117,9 @@ checksum = "2874a2af47a2325c2001a6e6fad9b16a53b802102b528163885171cf92b15976"

 [[package]]
 name = "libfuzzer-sys"
-version = "0.4.10"
+version = "0.4.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5037190e1f70cbeef565bd267599242926f724d3b8a9f510fd7e0b540cfa4404"
+checksum = "f12a681b7dd8ce12bff52488013ba614b869148d54dd79836ab85aafdd53f08d"
 dependencies = [
 "arbitrary",
 "cc",
@@ -148,7 +148,7 @@ dependencies = [

 [[package]]
 name = "parse_datetime"
-version = "0.13.1"
+version = "0.13.3"
 dependencies = [
 "jiff",
 "num-traits",
@@ -181,9 +181,9 @@ dependencies = [

 [[package]]
 name = "quote"
-version = "1.0.41"
+version = "1.0.42"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ce25767e7b499d1b604768e7cde645d14cc8584231ea6b295e9c9eb22c02e1d1"
+checksum = "a338cc41d27e6cc6dce6cefc13a0729dfbb81c262b1f519331575dd80ef3067f"
 dependencies = [
 "proc-macro2",
 ]
@@ -194,15 +194,6 @@ version = "5.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "69cdb34c158ceb288df11e18b4bd39de994f6657d83847bdffdbd7f346754b0f"

-[[package]]
-name = "serde"
-version = "1.0.228"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9a8e94ea7f378bd32cbbd37198a4a91436180c5bb472411e48b5ec2e2124ae9e"
-dependencies = [
- "serde_core",
-]
-
 [[package]]
 name = "serde_core"
 version = "1.0.228"
@@ -231,9 +222,9 @@ checksum = "0fda2ff0d084019ba4d7c6f371c95d8fd75ce3524c3cb8fb653a3023f6323e64"

 [[package]]
 name = "syn"
-version = "2.0.108"
+version = "2.0.110"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "da58917d35242480a05c2897064da0a80589a2a0476c9a3f2fdc83b53502e917"
+checksum = "a99801b5bd34ede4cf3fc688c5919368fea4e4814a4664359503e6015b280aea"
 dependencies = [
 "proc-macro2",
 "quote",
@@ -242,9 +233,9 @@ dependencies = [

 [[package]]
 name = "unicode-ident"
-version = "1.0.20"
+version = "1.0.22"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "462eeb75aeb73aea900253ce739c8e18a67423fadf006037cd3ff27e82748a06"
+checksum = "9312f7c4f6ff9069b165498234ce8be658059c6728633667c526e27dc2cf1df5"

 [[package]]
 name = "wasip2"
@@ -255,79 +246,21 @@ dependencies = [
 "wit-bindgen",
 ]

+[[package]]
+name = "windows-link"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f0805222e57f7521d6a62e36fa9163bc891acd422f971defe97d64e70d0a4fe5"
+
 [[package]]
 name = "windows-sys"
-version = "0.59.0"
+version = "0.61.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1e38bc4d79ed67fd075bcc251a1c39b32a1776bbe92e5bef1f0bf1f8c531853b"
+checksum = "ae137229bcbd6cdf0f7b80a31df61766145077ddf49416a728b02cb3921ff3fc"
 dependencies = [
- "windows-targets",
+ "windows-link",
 ]

-[[package]]
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-version = "0.52.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9b724f72796e036ab90c1021d4780d4d3d648aca59e491e6b98e725b84e99973"
-dependencies = [
- "windows_aarch64_gnullvm",
- "windows_aarch64_msvc",
- "windows_i686_gnu",
- "windows_i686_gnullvm",
- "windows_i686_msvc",
- "windows_x86_64_gnu",
- "windows_x86_64_gnullvm",
- "windows_x86_64_msvc",
-]
-
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-
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-name = "windows_x86_64_gnullvm"
-version = "0.52.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "24d5b23dc417412679681396f2b49f3de8c1473deb516bd34410872eff51ed0d"
-
-[[package]]
-name = "windows_x86_64_msvc"
-version = "0.52.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "589f6da84c646204747d1270a2a5661ea66ed1cced2631d546fdfb155959f9ec"
-
 [[package]]
 name = "winnow"
 version = "0.7.13"
@@ -1,7 +1,7 @@
 // For the full copyright and license information, please view the LICENSE
 // file that was distributed with this source code.

-use jiff::{civil, Span, Zoned};
+use jiff::{civil, Span, ToSpan, Zoned};

 use super::{date, epoch, error, offset, relative, time, weekday, year, Item};

@@ -187,9 +187,13 @@ impl DateTimeBuilder {
    ///   - e. Apply final fixed offset if present.
    pub(super) fn build(self) -> Result<Zoned, error::Error> {
        // 1. Choose the base instant.
-        let base = match (self.base, &self.timezone) {
-            (Some(b), _) => b,
-            (None, Some(tz)) => jiff::Timestamp::now().to_zoned(tz.clone()),
+        // If a TZ="..." prefix was parsed, it should override the base's timezone
+        // while keeping the base's timestamp for relative date calculations.
+        let has_timezone = self.timezone.is_some();
+        let base = match (self.base, self.timezone) {
+            (Some(b), Some(tz)) => b.timestamp().to_zoned(tz),
+            (Some(b), None) => b,
+            (None, Some(tz)) => jiff::Timestamp::now().to_zoned(tz),
            (None, None) => Zoned::now(),
        };

@@ -204,7 +208,7 @@ impl DateTimeBuilder {
            || self.time.is_some()
            || self.weekday.is_some()
            || self.offset.is_some()
-            || self.timezone.is_some();
+            || has_timezone;

        let mut dt = if need_midnight {
            base.with().time(civil::time(0, 0, 0, 0)).build()?
@@ -276,13 +280,23 @@ impl DateTimeBuilder {

        // 4d. Apply relative adjustments.
        for rel in self.relative {
-            dt = dt.checked_add::<Span>(if let relative::Relative::Months(x) = rel {
-                // *NOTE* This is done in this way to conform to GNU behavior.
-                let days = dt.date().last_of_month().day() as i32;
-                Span::new().try_days(days.checked_mul(x).ok_or("multiplication overflow")?)?
-            } else {
-                rel.try_into()?
-            })?;
+            dt = match rel {
+                relative::Relative::Years(_) | relative::Relative::Months(_) => {
+                    // GNU way of calculating relative months and years
+                    // GNU changes the month and then checks if the target month has
+                    // this day. If this day does not exist in the target month it overflows
+                    // the difference
+                    let original_day_of_month = dt.day();
+                    dt = dt.checked_add::<Span>(rel.try_into()?)?;
+                    if original_day_of_month != dt.day() {
+                        dt = dt.checked_add(
+                            (original_day_of_month.checked_sub(dt.day()).unwrap_or(0)).days(),
+                        )?;
+                    }
+                    dt
+                }
+                _ => dt.checked_add::<Span>(rel.try_into()?)?,
+            }
        }

        // 4e. Apply final fixed offset.
@@ -319,3 +333,146 @@ impl TryFrom<Vec<Item>> for DateTimeBuilder {
        Ok(builder)
    }
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    // Helper functions to create test items by parsing
+    fn timestamp() -> epoch::Timestamp {
+        let mut input = "@1234567890";
+        epoch::parse(&mut input).unwrap()
+    }
+
+    fn date() -> date::Date {
+        let mut input = "2023-06-15";
+        date::parse(&mut input).unwrap()
+    }
+
+    fn time() -> time::Time {
+        let mut input = "12:30:00";
+        time::parse(&mut input).unwrap()
+    }
+
+    fn time_with_offset() -> time::Time {
+        let mut input = "12:30:00+05:00";
+        time::parse(&mut input).unwrap()
+    }
+
+    fn weekday() -> weekday::Weekday {
+        let mut input = "monday";
+        weekday::parse(&mut input).unwrap()
+    }
+
+    fn offset() -> offset::Offset {
+        let mut input = "+05:00";
+        offset::timezone_offset(&mut input).unwrap()
+    }
+
+    fn relative() -> relative::Relative {
+        let mut input = "1 day";
+        relative::parse(&mut input).unwrap()
+    }
+
+    fn timezone() -> jiff::tz::TimeZone {
+        jiff::tz::TimeZone::UTC
+    }
+
+    #[test]
+    fn test_duplicate_items_errors() {
+        let test_cases = vec![
+            (
+                vec![Item::TimeZone(timezone()), Item::TimeZone(timezone())],
+                "timezone rule cannot appear more than once",
+            ),
+            (
+                vec![Item::Timestamp(timestamp()), Item::Timestamp(timestamp())],
+                "timestamp cannot appear more than once",
+            ),
+            (
+                vec![Item::Date(date()), Item::Date(date())],
+                "date cannot appear more than once",
+            ),
+            (
+                vec![Item::Time(time()), Item::Time(time())],
+                "time cannot appear more than once",
+            ),
+            (
+                vec![Item::Weekday(weekday()), Item::Weekday(weekday())],
+                "weekday cannot appear more than once",
+            ),
+            (
+                vec![Item::Offset(offset()), Item::Offset(offset())],
+                "time offset cannot appear more than once",
+            ),
+        ];
+
+        for (items, expected_err) in test_cases {
+            let result = DateTimeBuilder::try_from(items);
+            assert_eq!(result.unwrap_err(), expected_err);
+        }
+    }
+
+    #[test]
+    fn test_timestamp_cannot_be_combined_with_other_items() {
+        let test_cases = vec![
+            vec![Item::Date(date()), Item::Timestamp(timestamp())],
+            vec![Item::Time(time()), Item::Timestamp(timestamp())],
+            vec![Item::Weekday(weekday()), Item::Timestamp(timestamp())],
+            vec![Item::Offset(offset()), Item::Timestamp(timestamp())],
+            vec![Item::Relative(relative()), Item::Timestamp(timestamp())],
+            vec![Item::Timestamp(timestamp()), Item::Date(date())],
+            vec![Item::Timestamp(timestamp()), Item::Time(time())],
+            vec![Item::Timestamp(timestamp()), Item::Weekday(weekday())],
+            vec![Item::Timestamp(timestamp()), Item::Relative(relative())],
+            vec![Item::Timestamp(timestamp()), Item::Offset(offset())],
+            vec![Item::Timestamp(timestamp()), Item::Pure("2023".to_string())],
+        ];
+
+        for items in test_cases {
+            let result = DateTimeBuilder::try_from(items);
+            assert_eq!(
+                result.unwrap_err(),
+                "timestamp cannot be combined with other date/time items"
+            );
+        }
+    }
+
+    #[test]
+    fn test_time_offset_conflicts() {
+        // Time with offset followed by separate Offset item
+        let items1 = vec![Item::Time(time_with_offset()), Item::Offset(offset())];
+        assert_eq!(
+            DateTimeBuilder::try_from(items1).unwrap_err(),
+            "time offset cannot appear more than once"
+        );
+
+        // Offset item followed by Time with offset
+        let items2 = vec![Item::Offset(offset()), Item::Time(time_with_offset())];
+        assert_eq!(
+            DateTimeBuilder::try_from(items2).unwrap_err(),
+            "time offset and timezone are mutually exclusive"
+        );
+    }
+
+    #[test]
+    fn test_valid_combination_date_time() {
+        let items = vec![Item::Date(date()), Item::Time(time())];
+        let result = DateTimeBuilder::try_from(items);
+        assert!(result.is_ok());
+    }
+
+    #[test]
+    fn test_valid_combination_date_weekday() {
+        let items = vec![Item::Date(date()), Item::Weekday(weekday())];
+        let result = DateTimeBuilder::try_from(items);
+        assert!(result.is_ok());
+    }
+
+    #[test]
+    fn test_valid_timestamp_alone() {
+        let items = vec![Item::Timestamp(timestamp())];
+        let result = DateTimeBuilder::try_from(items);
+        assert!(result.is_ok());
+    }
+}
@@ -142,3 +142,64 @@ pub(super) fn ctx_err(reason: &'static str) -> ContextError {
    err.push(StrContext::Expected(StrContextValue::Description(reason)));
    err
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn parse_dec_int() {
+        for (input, expected) in [
+            ("123", 123),                 // positive without sign
+            ("+123", 123),                // positive with '+' sign
+            ("-123", -123),               // negative with '-' sign
+            ("0", 0),                     // zero
+            ("+0", 0),                    // zero with '+' sign
+            ("-0", 0),                    // zero with '-' sign (parses as 0)
+            ("012", 12),                  // zero-prefixed (the main reason for this function)
+            ("+012", 12),                 // zero-prefixed with '+' sign
+            ("-012", -12),                // zero-prefixed with '-' sign
+            ("00123", 123),               // multiple leading zeros
+            ("2147483647", 2147483647),   // i32::MAX
+            ("-2147483648", -2147483648), // i32::MIN
+        ] {
+            let mut s = input;
+            assert_eq!(
+                dec_int::<ContextError>(&mut s).unwrap(),
+                expected,
+                "{input}"
+            );
+        }
+
+        for input in [
+            "",    // empty string
+            "+",   // sign without digits
+            "-",   // sign without digits
+            "abc", // non-numeric
+            "12a", // starts with digits but has non-digit after (but should parse "12" successfully)
+        ] {
+            let mut s = input;
+            let result = dec_int::<ContextError>(&mut s);
+            // Note: "12a" will actually succeed and parse "12", leaving "a" unparsed
+            if input == "12a" {
+                assert_eq!(result.unwrap(), 12, "{input}");
+                assert_eq!(s, "a", "Should leave 'a' unparsed");
+            } else {
+                assert!(result.is_err(), "{input} should fail");
+            }
+        }
+
+        // Test overflow cases
+        for input in [
+            "2147483648",  // i32::MAX + 1
+            "-2147483649", // i32::MIN - 1
+            "99999999999", // way too large
+        ] {
+            let mut s = input;
+            assert!(
+                dec_int::<ContextError>(&mut s).is_err(),
+                "{input} should overflow"
+            );
+        }
+    }
+}
@@ -83,7 +83,7 @@ pub(super) fn parse(input: &mut &str) -> ModalResult<Relative> {
 fn seconds(input: &mut &str) -> ModalResult<Relative> {
    (
        opt(alt((s('+').value(1), s('-').value(-1)))),
-        sec_and_nsec,
+        s(sec_and_nsec),
        s(alpha1).verify(|s: &str| matches!(s, "seconds" | "second" | "sec" | "secs")),
        ago,
    )
@@ -138,11 +138,13 @@ mod tests {
            ("secs", Relative::Seconds(1, 0)),
            ("second ago", Relative::Seconds(-1, 0)),
            ("3 seconds", Relative::Seconds(3, 0)),
+            ("+ 3 seconds", Relative::Seconds(3, 0)),
            ("3.5 seconds", Relative::Seconds(3, 500_000_000)),
            ("-3.5 seconds", Relative::Seconds(-4, 500_000_000)),
            ("+3.5 seconds", Relative::Seconds(3, 500_000_000)),
+            ("+ 3.5 seconds", Relative::Seconds(3, 500_000_000)),
            ("3.5 seconds ago", Relative::Seconds(-4, 500_000_000)),
-            ("-3.5 seconds ago", Relative::Seconds(3, 500_000_000)),
+            ("-  3.5 seconds ago", Relative::Seconds(3, 500_000_000)),
            // Minutes
            ("minute", Relative::Minutes(1)),
            ("minutes", Relative::Minutes(1)),
@@ -150,29 +152,40 @@ mod tests {
            ("mins", Relative::Minutes(1)),
            ("10 minutes", Relative::Minutes(10)),
            ("-10 minutes", Relative::Minutes(-10)),
+            ("- 10 minutes", Relative::Minutes(-10)),
            ("10 minutes ago", Relative::Minutes(-10)),
            ("-10 minutes ago", Relative::Minutes(10)),
+            ("- 10 minutes ago", Relative::Minutes(10)),
+            ("-10 minutes ago", Relative::Minutes(10)),
+            ("- 10 minutes ago", Relative::Minutes(10)),
            // Hours
            ("hour", Relative::Hours(1)),
            ("hours", Relative::Hours(1)),
            ("10 hours", Relative::Hours(10)),
            ("+10 hours", Relative::Hours(10)),
+            ("+ 10 hours", Relative::Hours(10)),
            ("-10 hours", Relative::Hours(-10)),
+            ("- 10 hours", Relative::Hours(-10)),
            ("10 hours ago", Relative::Hours(-10)),
            ("-10 hours ago", Relative::Hours(10)),
+            ("- 10 hours ago", Relative::Hours(10)),
            // Days
            ("day", Relative::Days(1)),
            ("days", Relative::Days(1)),
            ("10 days", Relative::Days(10)),
            ("+10 days", Relative::Days(10)),
+            ("+ 10 days", Relative::Days(10)),
            ("-10 days", Relative::Days(-10)),
+            ("- 10 days", Relative::Days(-10)),
            ("10 days ago", Relative::Days(-10)),
            ("-10 days ago", Relative::Days(10)),
+            ("- 10 days ago", Relative::Days(10)),
            // Multiple days
            ("fortnight", Relative::Days(14)),
            ("fortnights", Relative::Days(14)),
            ("2 fortnights ago", Relative::Days(-28)),
            ("+2 fortnights ago", Relative::Days(-28)),
+            ("+ 2 fortnights ago", Relative::Days(-28)),
            ("week", Relative::Days(7)),
            ("weeks", Relative::Days(7)),
            ("2 weeks ago", Relative::Days(-14)),
@@ -307,6 +307,42 @@ mod tests {
                assert!(parse_datetime(relative_time).is_ok());
            }
        }
+
+        #[test]
+        fn integer_seconds_offset() {
+            let dt = "0 + 0 seconds";
+            assert!(parse_datetime(dt).is_ok());
+        }
+
+        #[test]
+        fn integer_seconds_offset_spaceless() {
+            let dt = "0+0 seconds";
+            assert!(parse_datetime(dt).is_ok());
+        }
+
+        #[test]
+        fn floating_seconds_offset() {
+            let dt = "0 + 0.0 seconds";
+            assert!(parse_datetime(dt).is_ok());
+        }
+
+        #[test]
+        fn floating_seconds_offset_spaceless() {
+            let dt = "0+0.0 seconds";
+            assert!(parse_datetime(dt).is_ok());
+        }
+
+        #[test]
+        fn floating_seconds_offset_from_now() {
+            let dt = "now  +  1.5 seconds";
+            assert!(parse_datetime(dt).is_ok());
+        }
+
+        #[test]
+        fn floating_seconds_offset_from_tomorrow_spaceless() {
+            let dt = "tomorrow+1.5 seconds";
+            assert!(parse_datetime(dt).is_ok());
+        }
    }

    #[cfg(test)]
@@ -95,3 +95,193 @@ fn test_date_omitting_year(#[case] input: &str, #[case] year: u32, #[case] expec
        .unwrap();
    check_relative(now, input, expected);
 }
+
+#[rstest]
+#[case::tz_prefix_est5("TZ=\"EST5\" 1970-01-01 00:00", "1970-01-01 00:00:00-05:00")]
+#[case::tz_prefix_pst8("TZ=\"PST8\" 1970-01-01 00:00", "1970-01-01 00:00:00-08:00")]
+#[case::tz_prefix_utc("TZ=\"UTC\" 1970-01-01 12:00", "1970-01-01 12:00:00+00:00")]
+#[case::tz_prefix_europe_paris(
+    r#"TZ="Europe/Paris" 2025-01-02 03:04:05"#,
+    "2025-01-02 03:04:05+01:00"
+)]
+fn test_tz_prefix_with_base_date(#[case] input: &str, #[case] expected: &str) {
+    let base = "2020-06-15 12:00:00"
+        .parse::<DateTime>()
+        .unwrap()
+        .to_zoned(TimeZone::UTC)
+        .unwrap();
+    check_relative(base, input, expected);
+}
+
+// Test leap year overflow: Feb 29 + years → non-leap year should overflow to March 1
+// This matches GNU date behavior
+#[rstest]
+#[case::feb29_1996_plus_1year("1996-02-29 00:00:00", "1 year", "1997-03-01 00:00:00+00:00")]
+#[case::feb29_2020_plus_1year("2020-02-29 00:00:00", "1 year", "2021-03-01 00:00:00+00:00")]
+#[case::feb29_2000_plus_1year("2000-02-29 00:00:00", "1 year", "2001-03-01 00:00:00+00:00")]
+// Edge case: 0 years should return the same date
+#[case::zero_years("2024-01-15 12:30:45", "0 years", "2024-01-15 12:30:45+00:00")]
+#[case::zero_years_feb29("2020-02-29 00:00:00", "0 years", "2020-02-29 00:00:00+00:00")]
+fn test_leap_year_overflow(#[case] base: &str, #[case] input: &str, #[case] expected: &str) {
+    let now = base
+        .parse::<DateTime>()
+        .unwrap()
+        .to_zoned(TimeZone::UTC)
+        .unwrap();
+    check_relative(now, input, expected);
+}
+
+// Test month arithmetic with day overflow
+// Matches GNU date behavior: when adding months causes day clamping,
+// overflow to next month (e.g., Jan 31 + 1 month = March 2/3, not Feb 28/29)
+#[rstest]
+#[case::jan31_plus_1month_leap("2024-01-31 00:00:00", "1 month", "2024-03-02 00:00:00+00:00")]
+#[case::jan31_plus_1month_nonleap("2023-01-31 00:00:00", "1 month", "2023-03-03 00:00:00+00:00")]
+#[case::mar31_plus_1month("2024-03-31 00:00:00", "1 month", "2024-05-01 00:00:00+00:00")]
+#[case::may31_plus_1month("2024-05-31 00:00:00", "1 month", "2024-07-01 00:00:00+00:00")]
+#[case::rel_2b("1997-01-19 08:17:48", "7 months ago", "1996-06-19 08:17:48+00:00")]
+// Edge case: 0 months should return the same date
+#[case::zero_months("2024-01-31 12:30:45", "0 months", "2024-01-31 12:30:45+00:00")]
+#[case::zero_months_feb29("2020-02-29 00:00:00", "0 months", "2020-02-29 00:00:00+00:00")]
+fn test_month_overflow(#[case] base: &str, #[case] input: &str, #[case] expected: &str) {
+    let now = base
+        .parse::<DateTime>()
+        .unwrap()
+        .to_zoned(TimeZone::UTC)
+        .unwrap();
+    check_relative(now, input, expected);
+}
+
+// Test negative year operations with leap year edge cases
+#[rstest]
+#[case::feb29_minus_1year("2020-02-29 00:00:00", "1 year ago", "2019-03-01 00:00:00+00:00")]
+#[case::feb29_minus_4years("2020-02-29 00:00:00", "4 years ago", "2016-02-29 00:00:00+00:00")]
+#[case::march1_minus_1year("2021-03-01 00:00:00", "1 year ago", "2020-03-01 00:00:00+00:00")]
+fn test_negative_year_operations(#[case] base: &str, #[case] input: &str, #[case] expected: &str) {
+    let now = base
+        .parse::<DateTime>()
+        .unwrap()
+        .to_zoned(TimeZone::UTC)
+        .unwrap();
+    check_relative(now, input, expected);
+}
+
+// Test negative month operations with day overflow
+#[rstest]
+#[case::march31_minus_1month("2024-03-31 00:00:00", "1 month ago", "2024-03-02 00:00:00+00:00")]
+#[case::march31_minus_1month_nonleap(
+    "2023-03-31 00:00:00",
+    "1 month ago",
+    "2023-03-03 00:00:00+00:00"
+)]
+#[case::may31_minus_1month("2024-05-31 00:00:00", "1 month ago", "2024-05-01 00:00:00+00:00")]
+#[case::jan31_minus_1month("2024-01-31 00:00:00", "1 month ago", "2023-12-31 00:00:00+00:00")]
+fn test_negative_month_operations(#[case] base: &str, #[case] input: &str, #[case] expected: &str) {
+    let now = base
+        .parse::<DateTime>()
+        .unwrap()
+        .to_zoned(TimeZone::UTC)
+        .unwrap();
+    check_relative(now, input, expected);
+}
+
+// Test chained operations (multiple relative adjustments in one parse)
+// These ensure that year and month overflow logic works correctly when combined
+#[rstest]
+// Feb 29, 2020 + 1 year = March 1, 2021; + 1 month = April 1, 2021
+#[case::feb29_plus_year_plus_month(
+    "2020-02-29 00:00:00",
+    "1 year 1 month",
+    "2021-04-01 00:00:00+00:00"
+)]
+// Jan 31, 2024 + 1 month = March 2, 2024; + 1 year = March 2, 2025
+#[case::jan31_plus_month_plus_year(
+    "2024-01-31 00:00:00",
+    "1 month 1 year",
+    "2025-03-02 00:00:00+00:00"
+)]
+// Jan 31 + 2 months + 1 day
+#[case::jan31_plus_2months_1day(
+    "2024-01-31 00:00:00",
+    "2 months 1 day",
+    "2024-04-01 00:00:00+00:00"
+)]
+// Feb 29 - 1 year + 1 month (March 1, 2019 + 1 month = April 1, 2019)
+#[case::feb29_minus_year_plus_month(
+    "2020-02-29 00:00:00",
+    "1 year ago 1 month",
+    "2019-04-01 00:00:00+00:00"
+)]
+// Multiple operations with days
+#[case::complex_chain(
+    "2024-01-31 12:30:45",
+    "1 year 2 months 3 days 4 hours",
+    "2025-04-03 16:30:45+00:00"
+)]
+fn test_chained_operations(#[case] base: &str, #[case] input: &str, #[case] expected: &str) {
+    let now = base
+        .parse::<DateTime>()
+        .unwrap()
+        .to_zoned(TimeZone::UTC)
+        .unwrap();
+    check_relative(now, input, expected);
+}
+
+// Test multiple month additions
+// Verifies correct handling when adding multiple months at once
+#[rstest]
+// Jan 31 + 2 months: Jan 31 -> March 31 (no clamping, month has 31 days)
+#[case::jan31_plus_2months("2024-01-31 00:00:00", "2 months", "2024-03-31 00:00:00+00:00")]
+// Jan 31 + 3 months: Jan 31 -> April 30 (clamps), overflow to May 1
+#[case::jan31_plus_3months("2024-01-31 00:00:00", "3 months", "2024-05-01 00:00:00+00:00")]
+// Jan 31 + 6 months: Jan 31 -> July 31 (no overflow)
+#[case::jan31_plus_6months("2024-01-31 00:00:00", "6 months", "2024-07-31 00:00:00+00:00")]
+// Jan 31 + 7 months: Jan 31 -> Aug 31 (no overflow)
+#[case::jan31_plus_7months("2024-01-31 00:00:00", "7 months", "2024-08-31 00:00:00+00:00")]
+// Aug 31 + 6 months: Aug 31 -> Feb 28 (2025 non-leap), overflow to March 3
+#[case::aug31_plus_6months("2024-08-31 00:00:00", "6 months", "2025-03-03 00:00:00+00:00")]
+// May 31 - 3 months: May 31 -> Feb 29 (2024 leap), overflow to March 2
+#[case::may31_minus_3months_leap(
+    "2024-05-31 00:00:00",
+    "3 months ago",
+    "2024-03-02 00:00:00+00:00"
+)]
+// Oct 31 - 8 months: Oct 31 -> Feb 29 (2024 leap), overflow to March 2
+#[case::oct31_minus_8months_leap(
+    "2024-10-31 00:00:00",
+    "8 months ago",
+    "2024-03-02 00:00:00+00:00"
+)]
+fn test_multiple_month_skip(#[case] base: &str, #[case] input: &str, #[case] expected: &str) {
+    let now = base
+        .parse::<DateTime>()
+        .unwrap()
+        .to_zoned(TimeZone::UTC)
+        .unwrap();
+    check_relative(now, input, expected);
+}
+
+// Test embedded timezone handling (cross-TZ-mishandled)
+// When TZ="..." is specified in input with a base date, apply the timezone to the base
+// https://bugs.debian.org/851934#10
+//
+// NOTE: These tests were added without implementation changes.
+// The timezone handling was already working correctly from previous commits.
+// These tests document and verify the expected behavior for this edge case.
+#[rstest]
+#[case::utc_explicit(r#"TZ="UTC0" 1970-01-01 00:00"#, "1970-01-01 00:00:00+00:00")]
+#[case::with_time(r#"TZ="EST5" 1970-01-01 12:30:45"#, "1970-01-01 12:30:45-05:00")]
+#[case::iana_timezone(
+    r#"TZ="America/New_York" 1970-01-01 00:00"#,
+    "1970-01-01 00:00:00-05:00"
+)]
+// Bug #851934: timezone conversion case
+// Parse date in Australia/Perth (AWST, UTC+8) and output should reflect that timezone
+// Input: 2016-08-15 07:00 in Australia/Perth -> expected: 2016-08-15 07:00:00+08:00
+#[case::perth_to_london(
+    r#"TZ="Australia/Perth" 2016-08-15 07:00"#,
+    "2016-08-15 07:00:00+08:00"
+)]
+fn test_embedded_timezone(#[case] input: &str, #[case] expected: &str) {
+    check_absolute(input, expected);
+}
@@ -129,6 +129,123 @@ fn test_time_invalid(#[case] input: &str) {
    );
 }

+#[rstest]
+#[case::months_ago_0("2026-01-12 0 Months ago", "2026-01-12")]
+#[case::months_ago_negative_1("2026-01-12 -1 Months ago", "2026-02-12")]
+#[case::months_ago_1("2026-01-12 1 Months ago", "2025-12-12")]
+#[case::months_ago_2("2026-01-12 2 Months ago", "2025-11-12")]
+#[case::months_ago_3("2026-01-12 3 Months ago", "2025-10-12")]
+#[case::months_ago_4("2026-01-12 4 Months ago", "2025-09-12")]
+#[case::months_ago_5("2026-01-12 5 Months ago", "2025-08-12")]
+#[case::months_ago_6("2026-01-12 6 Months ago", "2025-07-12")]
+#[case::months_ago_7("2026-01-12 7 Months ago", "2025-06-12")]
+#[case::months_ago_8("2026-01-12 8 Months ago", "2025-05-12")]
+#[case::months_ago_9("2026-01-12 9 Months ago", "2025-04-12")]
+#[case::months_ago_10("2026-01-12 10 Months ago", "2025-03-12")]
+#[case::months_ago_11("2026-01-12 11 Months ago", "2025-02-12")]
+#[case::months_ago_12("2026-01-12 12 Months ago", "2025-01-12")]
+#[case::months_ago_24("2026-01-12 24 Months ago", "2024-01-12")]
+#[case::months_ago_36("2026-01-12 36 Months ago", "2023-01-12")]
+#[case::months_ago_120("2026-01-12 120 Months ago", "2016-01-12")]
+#[case::months_ago_240("2026-01-12 240 Months ago", "2006-01-12")]
+fn test_time_months_ago(#[case] input: &str, #[case] expected: &str) {
+    let now = "2026-01-12"
+        .parse::<DateTime>()
+        .unwrap()
+        .to_zoned(TimeZone::UTC)
+        .unwrap();
+    check_time(input, expected, "%Y-%m-%d", Some(now));
+}
+
+#[rstest]
+#[case::from_28_feb_in_1_month("2026-02-28 1 months", "2026-03-28")]
+#[case::from_28_feb_1_month_ago("2026-02-28 1 months ago", "2026-01-28")]
+#[case::from_31_jan_in_1_month("2026-01-31 1 months", "2026-03-03")]
+#[case::from_31_march_1_month_ago("2026-03-31 1 months ago", "2026-03-03")]
+#[case::from_15_march_1_month_ago("2026-03-15 1 months ago", "2026-02-15")]
+#[case::from_15_jan_in_1_month("2026-01-15 1 months", "2026-02-15")]
+fn test_relative_month_time_non_leap_year(#[case] input: &str, #[case] expected: &str) {
+    let now = "2026-01-12"
+        .parse::<DateTime>()
+        .unwrap()
+        .to_zoned(TimeZone::UTC)
+        .unwrap();
+    check_time(input, expected, "%Y-%m-%d", Some(now));
+}
+
+#[rstest]
+#[case::from_31_dec_1_month_ago("2026-12-31 1 months ago", "2026-12-01")]
+#[case::from_31_dec_3_month_ago("2026-12-31 3 months ago", "2026-10-01")]
+#[case::from_31_mar_in_1_month("2026-03-31 1 months", "2026-05-01")]
+#[case::from_31_mar_in_3_month("2026-03-31 3 months", "2026-07-01")]
+fn test_relative_month_time_dest_month_does_not_have_the_day(
+    #[case] input: &str,
+    #[case] expected: &str,
+) {
+    let now = "2026-01-12"
+        .parse::<DateTime>()
+        .unwrap()
+        .to_zoned(TimeZone::UTC)
+        .unwrap();
+    check_time(input, expected, "%Y-%m-%d", Some(now));
+}
+
+#[rstest]
+#[case::from_29_feb_in_1_year("2024-02-29 1 year", "2025-03-01")]
+#[case::from_29_feb_1_year_ago("2024-02-29 1 year ago", "2023-03-01")]
+fn test_relative_year_time_leap_year(#[case] input: &str, #[case] expected: &str) {
+    let now = "2026-01-12"
+        .parse::<DateTime>()
+        .unwrap()
+        .to_zoned(TimeZone::UTC)
+        .unwrap();
+    check_time(input, expected, "%Y-%m-%d", Some(now));
+}
+
+#[rstest]
+#[case::from_29_feb_in_1_month("2024-02-29 1 months", "2024-03-29")]
+#[case::from_29_feb_1_month_ago("2024-02-29 1 months ago", "2024-01-29")]
+#[case::from_31_jan_in_1_month("2024-01-31 1 months", "2024-03-02")]
+#[case::from_31_march_1_month_ago("2024-03-31 1 months ago", "2024-03-02")]
+#[case::from_15_march_1_month_ago("2024-03-15 1 months ago", "2024-02-15")]
+#[case::from_15_jan_in_1_month("2024-01-15 1 months", "2024-02-15")]
+fn test_relative_month_time_leap_year(#[case] input: &str, #[case] expected: &str) {
+    let now = "2026-01-12"
+        .parse::<DateTime>()
+        .unwrap()
+        .to_zoned(TimeZone::UTC)
+        .unwrap();
+    check_time(input, expected, "%Y-%m-%d", Some(now));
+}
+
+#[rstest]
+#[case::months_in_0_months("2026-01-12 0 months", "2026-01-12")]
+#[case::months_in_negative_1_months("2026-01-12 -1 months", "2025-12-12")]
+#[case::months_in_1_months("2026-01-12 1 months", "2026-02-12")]
+#[case::months_in_2_months("2026-01-12 2 months", "2026-03-12")]
+#[case::months_in_3_months("2026-01-12 3 months", "2026-04-12")]
+#[case::months_in_4_months("2026-01-12 4 months", "2026-05-12")]
+#[case::months_in_5_months("2026-01-12 5 months", "2026-06-12")]
+#[case::months_in_6_months("2026-01-12 6 months", "2026-07-12")]
+#[case::months_in_7_months("2026-01-12 7 months", "2026-08-12")]
+#[case::months_in_8_months("2026-01-12 8 months", "2026-09-12")]
+#[case::months_in_9_months("2026-01-12 9 months", "2026-10-12")]
+#[case::months_in_10_months("2026-01-12 10 months", "2026-11-12")]
+#[case::months_in_11_months("2026-01-12 11 months", "2026-12-12")]
+#[case::months_in_12_months("2026-01-12 12 months", "2027-01-12")]
+#[case::months_in_24_months("2026-01-12 24 months", "2028-01-12")]
+#[case::months_in_36_months("2026-01-12 36 months", "2029-01-12")]
+#[case::months_in_120_months("2026-01-12 120 months", "2036-01-12")]
+#[case::months_in_240_months("2026-01-12 240 months", "2046-01-12")]
+fn test_time_in_months(#[case] input: &str, #[case] expected: &str) {
+    let now = "2026-01-12"
+        .parse::<DateTime>()
+        .unwrap()
+        .to_zoned(TimeZone::UTC)
+        .unwrap();
+    check_time(input, expected, "%Y-%m-%d", Some(now));
+}
+
 #[rstest]
 #[case::decimal_1_whole("1.123456789 seconds ago")]
 #[case::decimal_2_whole("12.123456789 seconds ago")]
Author	SHA1	Message	Date
Sylvestre Ledru	f68a01699e	prepare release 0.14.0	2026-02-14 18:55:26 +01:00
Sylvestre Ledru	73b4b0a50c	improve the code coverage	2026-02-14 18:19:31 +01:00
Sylvestre Ledru	002ca41008	tests: add edge case tests for 0 years and 0 months Add tests to verify that adding 0 years or 0 months returns the original date unchanged, including edge cases with Feb 29.	2026-02-14 18:19:31 +01:00
Sylvestre Ledru	818cfa4ad0	date: add more tests for cross-TZ-mishandled test - embedded timezone NOTE: This commit only adds tests as the implementation was already working correctly. These tests document and verify the expected behavior for the embedded timezone edge case referenced in Debian bug #851934.	2026-02-14 18:19:31 +01:00
Sylvestre Ledru	5cf8a6fbdd	date: add more tests leap year overflow	2026-02-14 18:19:31 +01:00
Sylvestre Ledru	9688db08a8	Fix the coverage (#260 )	2026-02-14 17:53:31 +01:00
cerdelen	f10a950e23	parse_datetime: better variable name	2026-02-14 11:21:39 +01:00
cerdelen	14bbd4e848	parse_datetime: relative Year overflow for leap years	2026-02-14 11:21:39 +01:00
cerdelen	dbfdea454f	parse_datetime: Remove unnessecary import	2026-02-14 11:21:39 +01:00
cerdelen	7e528ad609	parse_datetime: Implement GNU style overflow/underflow In GNU if using date with relative Months with the -d flag and the target Month does not have the source day (for example 31) GNU overflows the diff in days.	2026-02-14 11:21:39 +01:00
cerdelen	6306843888	parse_datetime: add regression tests	2026-02-14 11:21:39 +01:00
cerdelen	d5c441bd3f	parse_datetime: fix overflow issue	2026-02-14 11:21:39 +01:00
cerdelen	62cb7d9687	parse_datetime: Fix relative date adjustments for months using the actual days	2026-02-14 11:21:39 +01:00
Chris Dryden	642bbbf214	Merge pull request #255 from ChrisDryden/fix-tz-prefix-with-base-date fix: TZ prefix should override base date timezone	2026-02-12 09:29:36 +01:00
renovate[bot]	6396c07d72	chore(deps): update rust crate jiff to v0.2.20	2026-02-12 07:06:17 +01:00
renovate[bot]	377ba0e040	chore(deps): update rust crate libfuzzer-sys to v0.4.12	2026-02-11 07:03:20 +01:00
Daniel Hofstetter	ffb1ba35c5	Merge pull request #256 from uutils/renovate/jiff-0.x-lockfile chore(deps): update rust crate jiff to v0.2.19	2026-02-06 07:52:19 +01:00
renovate[bot]	eeffa242a1	chore(deps): update rust crate jiff to v0.2.19	2026-02-06 00:33:10 +00:00
Daniel Hofstetter	3a1edfb177	Merge pull request #251 from uutils/renovate/jiff-0.x-lockfile chore(deps): update rust crate jiff to v0.2.18	2026-01-06 07:09:04 +01:00
renovate[bot]	866b6b446f	chore(deps): update rust crate jiff to v0.2.18	2026-01-06 05:15:24 +00:00
Daniel Hofstetter	13e038a503	Merge pull request #250 from uutils/renovate/jiff-0.x-lockfile chore(deps): update rust crate jiff to v0.2.17	2025-12-25 07:09:32 +01:00
renovate[bot]	7030df6cf0	chore(deps): update rust crate jiff to v0.2.17	2025-12-24 21:35:09 +00:00
Daniel Hofstetter	cfbb973215	Merge pull request #249 from uutils/renovate/winnow-0.x-lockfile chore(deps): update rust crate winnow to v0.7.14	2025-11-27 06:53:55 +01:00
renovate[bot]	88a4a718b0	chore(deps): update rust crate winnow to v0.7.14	2025-11-26 19:44:53 +00:00
Daniel Hofstetter	6462d410d8	Merge pull request #248 from cakebaker/bump_version_to_0_13_3 chore: bump version to `0.13.3`	2025-11-21 10:12:43 +01:00
Daniel Hofstetter	92d095b53b	chore: bump version to 0.13.3	2025-11-21 09:52:19 +01:00
Daniel Hofstetter	ea143af391	Merge pull request #247 from cakebaker/bump_dependencies chore: update dependencies	2025-11-21 09:49:15 +01:00
Daniel Hofstetter	835e46e6f1	chore: update dependencies	2025-11-21 09:44:58 +01:00
Daniel Hofstetter	31b8e58cc5	Merge pull request #246 from 3v1n0/fix-parsing-relative-times relative: Support parsing floating relative values with spaces	2025-11-21 09:16:18 +01:00
Daniel Hofstetter	9de30f5fc3	Merge pull request #245 from uutils/renovate/actions-checkout-6.x chore(deps): update actions/checkout action to v6	2025-11-21 06:58:39 +01:00
Marco Trevisan (Treviño)	d6ab892c29	relative: Add more tests for parsing signed values with spaces	2025-11-21 06:37:09 +01:00
Marco Trevisan (Treviño)	1e4fc30f7b	relative: Support parsing floating relative values with spaces In case a string such as "now + 1.5 seconds" was parsed we were failing. This happened because after processing now, the parser was getting to the point in which the string contained "+ 1.5", and once the sign was processed, the remaining " 1.5" string conained a space that was causing sec_and_nsec to fail. Instead of failing at this point, just strip the spaces after the sign has been processed. Note in fact that "0+0.0 seconds" was working fine Closes: https://github.com/uutils/coreutils/issues/8618	2025-11-21 06:37:09 +01:00
renovate[bot]	6ce151fb58	chore(deps): update actions/checkout action to v6	2025-11-20 18:43:38 +00:00