tests/{readlink, realpath}: fix tests on Windows

I fixed the tests that assumed paths used a Unix directory separator.

tests/common/util.rs

@@ -49,6 +49,25 @@ macro_rules! assert_no_error(
     );
 );
 
+#[macro_export]
+macro_rules! path_concat {
+    ($e:expr, ..$n:expr) => {{
+        let n = $n;
+        let mut pb = std::path::PathBuf::new();
+        for _ in 0..n {
+            pb.push($e);
+        }
+        pb.to_str().unwrap().to_owned()
+    }};
+    ($($e:expr),*) => {{
+        let mut pb = std::path::PathBuf::new();
+        $(
+            pb.push($e);
+        )*
+        pb.to_str().unwrap().to_owned()
+    }};
+}
+
 pub struct CmdResult {
     pub success: bool,
     pub stdout: String,
@@ -97,15 +116,6 @@ pub fn log_info<T: AsRef<str>, U: AsRef<str>>(msg: T, par: U) {
     println!("{}: {}", msg.as_ref(), par.as_ref());
 }
 
-
-pub fn repeat_str(s: &str, n: u32) -> String {
-    let mut repeated = String::new();
-    for _ in 0..n {
-        repeated.push_str(s);
-    }
-    repeated
-}
-
 pub fn recursive_copy(src: &Path, dest: &Path) -> Result<()> {
     if try!(fs::metadata(src)).is_dir() {
         for entry in try!(fs::read_dir(src)) {
@@ -123,6 +133,14 @@ pub fn recursive_copy(src: &Path, dest: &Path) -> Result<()> {
     Ok(())
 }
 
+pub fn get_root_path() -> &'static str {
+    if cfg!(windows) {
+        "C:\\"
+    } else {
+        "/"
+    }
+}
+
 /// A scoped, temporary file that is removed upon drop.
 pub struct ScopedFile {
     path: PathBuf,

tests/readlink.rs

@@ -33,9 +33,7 @@ fn test_canonicalize_existing() {
 #[test]
 fn test_canonicalize_missing() {
     let (at, mut ucmd) = testing(UTIL_NAME);
-    let mut expected = at.root_dir_resolved();
-    expected.push_str("/");
-    expected.push_str(GIBBERISH);
+    let expected = path_concat!(at.root_dir_resolved(), GIBBERISH);
 
     let out = ucmd.arg("-m")
                   .arg(GIBBERISH)
@@ -49,7 +47,7 @@ fn test_canonicalize_missing() {
 fn test_long_redirection_to_current_dir() {
     let (at, mut ucmd) = testing(UTIL_NAME);
     // Create a 256-character path to current directory
-    let dir = repeat_str("./", 128);
+    let dir = path_concat!(".", ..128);
     let out = ucmd.arg("-n")
                   .arg("-m")
                   .arg(dir)
@@ -63,12 +61,12 @@ fn test_long_redirection_to_current_dir() {
 fn test_long_redirection_to_root() {
     let (_, mut ucmd) = testing(UTIL_NAME);
     // Create a 255-character path to root
-    let dir = repeat_str("../", 85);
+    let dir = path_concat!("..", ..85);
     let out = ucmd.arg("-n")
                   .arg("-m")
                   .arg(dir)
                   .run()
                   .stdout;
 
-    assert_eq!(out, "/");
+    assert_eq!(out, get_root_path());
 }

tests/realpath.rs

@@ -17,7 +17,7 @@ fn test_current_directory() {
 fn test_long_redirection_to_current_dir() {
     let (at, mut ucmd) = testing(UTIL_NAME);
     // Create a 256-character path to current directory
-    let dir = repeat_str("./", 128);
+    let dir = path_concat!(".", ..128);
     let out = ucmd.arg(dir).run().stdout;
 
     assert_eq!(out.trim_right(), at.root_dir_resolved());
@@ -27,8 +27,8 @@ fn test_long_redirection_to_current_dir() {
 fn test_long_redirection_to_root() {
     let (_, mut ucmd) = testing(UTIL_NAME);
     // Create a 255-character path to root
-    let dir = repeat_str("../", 85);
+    let dir = path_concat!("..", ..85);
     let out = ucmd.arg(dir).run().stdout;
 
-    assert_eq!(out.trim_right(), "/");
+    assert_eq!(out.trim_right(), get_root_path());
 }