touch: add test

tests/common/util.rs

@@ -291,6 +291,13 @@ impl AtPath {
         }
     }
 
+    pub fn symlink_metadata(&self, path: &str) -> fs::Metadata {
+        match fs::symlink_metadata(&self.plus(path)) {
+            Ok(m) => m,
+            Err(e) => panic!("{}", e),
+        }
+    }
+
     pub fn metadata(&self, path: &str) -> fs::Metadata {
         match fs::metadata(&self.plus(path)) {
             Ok(m) => m,

tests/test_touch.rs

@@ -1,9 +1,9 @@
-extern crate filetime;
+extern crate uu_touch;
+use self::uu_touch::filetime::{self, FileTime};
+
 extern crate time;
 
 use common::util::*;
-use self::filetime::FileTime;
-
 
 fn get_file_times(at: &AtPath, path: &str) -> (FileTime, FileTime) {
     let m = at.metadata(path);
@@ -11,6 +11,12 @@ fn get_file_times(at: &AtPath, path: &str) -> (FileTime, FileTime) {
      FileTime::from_last_modification_time(&m))
 }
 
+fn get_symlink_times(at: &AtPath, path: &str) -> (FileTime, FileTime) {
+    let m = at.symlink_metadata(path);
+    (FileTime::from_last_access_time(&m),
+     FileTime::from_last_modification_time(&m))
+}
+
 fn set_file_times(at: &AtPath, path: &str, atime: FileTime, mtime: FileTime) {
     filetime::set_file_times(&at.plus_as_string(path), atime, mtime).unwrap()
 }
@@ -29,7 +35,7 @@ fn test_touch_default() {
     let file = "test_touch_default_file";
 
     ucmd.arg(file).succeeds().no_stderr();
-    
+
 
     assert!(at.file_exists(file));
 }
@@ -215,6 +221,33 @@ fn test_touch_set_both() {
                45240);
 }
 
+#[test]
+fn test_touch_no_dereference() {
+    let (at, mut ucmd) = at_and_ucmd!();
+    let file_a = "test_touch_no_dereference_a";
+    let file_b = "test_touch_no_dereference_b";
+    let start_of_year = str_to_filetime("%Y%m%d%H%M", "201501010000");
+    let end_of_year = str_to_filetime("%Y%m%d%H%M", "201512312359");
+
+    at.touch(file_a);
+    set_file_times(&at, file_a, start_of_year, start_of_year);
+    at.symlink(file_a, file_b);
+    assert!(at.file_exists(file_a));
+    assert!(at.is_symlink(file_b));
+
+    ucmd.args(&["-t", "201512312359", "-h", file_b]).succeeds().no_stderr();
+
+    let (atime, mtime) = get_symlink_times(&at, file_b);
+    assert_eq!(atime, mtime);
+    assert_eq!(atime, end_of_year);
+    assert_eq!(mtime, end_of_year);
+
+    let (atime, mtime) = get_file_times(&at, file_a);
+    assert_eq!(atime, mtime);
+    assert_eq!(atime, start_of_year);
+    assert_eq!(mtime, start_of_year);
+}
+
 #[test]
 fn test_touch_reference() {
     let (at, mut ucmd) = at_and_ucmd!();