add tests with emoji for various commands (#8545)

* add tests with emoji for various commands

* test/ls: use touch instead of an empty write

Co-authored-by: Daniel Hofstetter <daniel.hofstetter@42dh.com>

---------

Co-authored-by: Daniel Hofstetter <daniel.hofstetter@42dh.com>

tests/by-util/test_cut.rs

@@ -374,6 +374,20 @@ fn test_output_delimiter_with_adjacent_ranges() {
         .stdout_only("ab:cd\n");
 }
 
+#[test]
+fn test_emoji_delim() {
+    new_ucmd!()
+        .args(&["-d🗿", "-f1"])
+        .pipe_in("💐🗿🌹\n")
+        .succeeds()
+        .stdout_only("💐\n");
+    new_ucmd!()
+        .args(&["-d🗿", "-f2"])
+        .pipe_in("💐🗿🌹\n")
+        .succeeds()
+        .stdout_only("🌹\n");
+}
+
 #[cfg(target_os = "linux")]
 #[test]
 fn test_failed_write_is_reported() {

tests/by-util/test_join.rs

@@ -566,3 +566,17 @@ fn test_join_non_utf8_paths() {
             .stdout_only("a 1 2\n");
     }
 }
+
+#[test]
+fn join_emoji_delim_inner_key() {
+    let ts = TestScenario::new(util_name!());
+    let at = &ts.fixtures;
+
+    at.write("file1", "a🗿b\n");
+    at.write("file2", "u🗿b\n");
+
+    ts.ucmd()
+        .args(&["-t🗿", "-1", "2", "-2", "2", "file1", "file2"])
+        .succeeds()
+        .stdout_only("b🗿a🗿u\n");
+}

tests/by-util/test_ls.rs

@@ -6147,3 +6147,19 @@ fn test_acl_display_symlink() {
         .succeeds()
         .stdout_matches(&re_with_acl);
 }
+
+#[test]
+fn ls_emoji_alignment() {
+    let scene = TestScenario::new(util_name!());
+    let at = &scene.fixtures;
+
+    at.touch("a");
+    at.touch("💐");
+    at.touch("漢");
+    scene
+        .ucmd()
+        .succeeds()
+        .stdout_contains("a")
+        .stdout_contains("💐")
+        .stdout_contains("漢");
+}

tests/by-util/test_wc.rs

@@ -799,3 +799,12 @@ fn test_args_override() {
         .succeeds()
         .stdout_is("  5  57 302 alice_in_wonderland.txt\n");
 }
+
+#[test]
+fn wc_w_words_with_emoji_separator() {
+    new_ucmd!()
+        .args(&["-w"])
+        .pipe_in("foo 💐 bar\n")
+        .succeeds()
+        .stdout_contains("3");
+}