tests ~ reorganize tests

tests/by-util/test_du.rs

@@ -0,0 +1,148 @@
+use crate::common::util::*;
+
+const SUB_DIR: &str = "subdir/deeper";
+const SUB_DIR_LINKS: &str = "subdir/links";
+const SUB_FILE: &str = "subdir/links/subwords.txt";
+const SUB_LINK: &str = "subdir/links/sublink.txt";
+
+#[test]
+fn test_du_basics() {
+    let (_at, mut ucmd) = at_and_ucmd!();
+    let result = ucmd.run();
+    assert!(result.success);
+    assert_eq!(result.stderr, "");
+}
+#[cfg(target_os = "macos")]
+fn _du_basics(s: String) {
+    let answer = "32\t./subdir
+8\t./subdir/deeper
+24\t./subdir/links
+40\t./
+";
+    assert_eq!(s, answer);
+}
+#[cfg(not(target_os = "macos"))]
+fn _du_basics(s: String) {
+    let answer = "28\t./subdir
+8\t./subdir/deeper
+16\t./subdir/links
+36\t./
+";
+    assert_eq!(s, answer);
+}
+
+#[test]
+fn test_du_basics_subdir() {
+    let (_at, mut ucmd) = at_and_ucmd!();
+
+    let result = ucmd.arg(SUB_DIR).run();
+    assert!(result.success);
+    assert_eq!(result.stderr, "");
+    _du_basics_subdir(result.stdout);
+}
+
+#[cfg(target_os = "macos")]
+fn _du_basics_subdir(s: String) {
+    assert_eq!(s, "4\tsubdir/deeper\n");
+}
+#[cfg(not(target_os = "macos"))]
+fn _du_basics_subdir(s: String) {
+    // MS-WSL linux has altered expected output
+    if !is_wsl() {
+        assert_eq!(s, "8\tsubdir/deeper\n");
+    } else {
+        assert_eq!(s, "0\tsubdir/deeper\n");
+    }
+}
+
+#[test]
+fn test_du_basics_bad_name() {
+    let (_at, mut ucmd) = at_and_ucmd!();
+
+    let result = ucmd.arg("bad_name").run();
+    assert_eq!(result.stdout, "");
+    assert_eq!(
+        result.stderr,
+        "du: error: bad_name: No such file or directory\n"
+    );
+}
+
+#[test]
+fn test_du_soft_link() {
+    let ts = TestScenario::new("du");
+
+    let link = ts.cmd("ln").arg("-s").arg(SUB_FILE).arg(SUB_LINK).run();
+    assert!(link.success);
+
+    let result = ts.ucmd().arg(SUB_DIR_LINKS).run();
+    assert!(result.success);
+    assert_eq!(result.stderr, "");
+    _du_soft_link(result.stdout);
+}
+
+#[cfg(target_os = "macos")]
+fn _du_soft_link(s: String) {
+    // 'macos' host variants may have `du` output variation for soft links
+    assert!((s == "12\tsubdir/links\n") || (s == "16\tsubdir/links\n"));
+}
+#[cfg(not(target_os = "macos"))]
+fn _du_soft_link(s: String) {
+    // MS-WSL linux has altered expected output
+    if !is_wsl() {
+        assert_eq!(s, "16\tsubdir/links\n");
+    } else {
+        assert_eq!(s, "8\tsubdir/links\n");
+    }
+}
+
+#[test]
+fn test_du_hard_link() {
+    let ts = TestScenario::new("du");
+
+    let link = ts.cmd("ln").arg(SUB_FILE).arg(SUB_LINK).run();
+    assert!(link.success);
+
+    let result = ts.ucmd().arg(SUB_DIR_LINKS).run();
+    assert!(result.success);
+    assert_eq!(result.stderr, "");
+    // We do not double count hard links as the inodes are identical
+    _du_hard_link(result.stdout);
+}
+
+#[cfg(target_os = "macos")]
+fn _du_hard_link(s: String) {
+    assert_eq!(s, "12\tsubdir/links\n")
+}
+#[cfg(not(target_os = "macos"))]
+fn _du_hard_link(s: String) {
+    // MS-WSL linux has altered expected output
+    if !is_wsl() {
+        assert_eq!(s, "16\tsubdir/links\n");
+    } else {
+        assert_eq!(s, "8\tsubdir/links\n");
+    }
+}
+
+#[test]
+fn test_du_d_flag() {
+    let ts = TestScenario::new("du");
+
+    let result = ts.ucmd().arg("-d").arg("1").run();
+    assert!(result.success);
+    assert_eq!(result.stderr, "");
+    _du_d_flag(result.stdout);
+}
+
+#[cfg(target_os = "macos")]
+fn _du_d_flag(s: String) {
+    assert_eq!(s, "16\t./subdir\n20\t./\n");
+}
+#[cfg(not(target_os = "macos"))]
+fn _du_d_flag(s: String) {
+    // MS-WSL linux has altered expected output
+    if !is_wsl() {
+        assert_eq!(s, "28\t./subdir\n36\t./\n");
+    } else {
+        assert_eq!(s, "8\t./subdir\n8\t./\n");
+    }
+}