1 files changed, 121 insertions, 0 deletions
diff --git a/devtools/client/performance-new/test/xpcshell/test_remove_common_path_prefix.js b/devtools/client/performance-new/test/xpcshell/test_remove_common_path_prefix.js
new file mode 100644
index 0000000000..563f0c43b4
--- /dev/null
+++ b/devtools/client/performance-new/test/xpcshell/test_remove_common_path_prefix.js
@@ -0,0 +1,121 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+const { require } = ChromeUtils.importESModule(
+  "resource://devtools/shared/loader/Loader.sys.mjs"
+);
+const {
+  withCommonPathPrefixRemoved,
+} = require("resource://devtools/client/performance-new/shared/utils.js");
+
+add_task(function test() {
+  info(
+    "withCommonPathPrefixRemoved() removes the common prefix from an array " +
+      "of paths. This test ensures that the paths are correctly removed."
+  );
+
+  if (Services.appinfo.OS === "WINNT") {
+    info("Check Windows paths");
+
+    deepEqual(withCommonPathPrefixRemoved([]), [], "Windows empty paths");
+
+    deepEqual(
+      withCommonPathPrefixRemoved(["source\\file1.js", "source\\file2.js"]),
+      ["source\\file1.js", "source\\file2.js"],
+      "Windows relative paths"
+    );
+
+    deepEqual(
+      withCommonPathPrefixRemoved([
+        "C:\\Users\\SomeUser\\Desktop\\source\\file1.js",
+        "D:\\Users\\SomeUser\\Desktop\\source\\file2.js",
+      ]),
+      [
+        "C:\\Users\\SomeUser\\Desktop\\source\\file1.js",
+        "D:\\Users\\SomeUser\\Desktop\\source\\file2.js",
+      ],
+      "Windows multiple disks"
+    );
+
+    deepEqual(
+      withCommonPathPrefixRemoved([
+        "C:\\Users\\SomeUser\\Desktop\\source\\file1.js",
+        "C:\\Users\\SomeUser\\Desktop\\source\\file2.js",
+      ]),
+      ["file1.js", "file2.js"],
+      "Windows full path match"
+    );
+
+    deepEqual(
+      withCommonPathPrefixRemoved([
+        "C:\\Users\\SomeUser\\Desktop\\source\\file1.js",
+        "C:\\Users\\SomeUser\\file2.js",
+      ]),
+      ["Desktop\\source\\file1.js", "file2.js"],
+      "Windows path match at level 3"
+    );
+
+    deepEqual(
+      withCommonPathPrefixRemoved([
+        "C:\\Users\\SomeUser\\Desktop\\source\\file1.js",
+        "C:\\Users\\SomeUser\\file2.js",
+        "C:\\Users\\file3.js",
+      ]),
+      ["SomeUser\\Desktop\\source\\file1.js", "SomeUser\\file2.js", "file3.js"],
+      "Windows path match at level 2"
+    );
+
+    deepEqual(
+      withCommonPathPrefixRemoved(["C:\\dev"]),
+      ["C:\\dev"],
+      "Windows path match at level 1"
+    );
+  } else {
+    info("Check UNIX paths");
+
+    deepEqual(withCommonPathPrefixRemoved([]), [], "UNIX empty paths");
+
+    deepEqual(
+      withCommonPathPrefixRemoved(["source/file1.js", "source/file2.js"]),
+      ["source/file1.js", "source/file2.js"],
+      "UNIX relative paths"
+    );
+
+    deepEqual(
+      withCommonPathPrefixRemoved([
+        "/home/someuser/Desktop/source/file1.js",
+        "/home/someuser/Desktop/source/file2.js",
+      ]),
+      ["file1.js", "file2.js"],
+      "UNIX full path match"
+    );
+
+    deepEqual(
+      withCommonPathPrefixRemoved([
+        "/home/someuser/Desktop/source/file1.js",
+        "/home/someuser/file2.js",
+      ]),
+      ["Desktop/source/file1.js", "file2.js"],
+      "UNIX path match at level 3"
+    );
+
+    deepEqual(
+      withCommonPathPrefixRemoved([
+        "/home/someuser/Desktop/source/file1.js",
+        "/home/someuser/file2.js",
+        "/home/file3.js",
+      ]),
+      ["someuser/Desktop/source/file1.js", "someuser/file2.js", "file3.js"],
+      "UNIX path match at level 2"
+    );
+
+    deepEqual(
+      withCommonPathPrefixRemoved(["/bin"]),
+      ["/bin"],
+      "UNIX path match at level 1"
+    );
+  }
+});