1 files changed, 63 insertions, 0 deletions
diff --git a/std/fs/_util_test.ts b/std/fs/_util_test.ts
new file mode 100644
index 000000000..48fc33ecd
--- /dev/null
+++ b/std/fs/_util_test.ts
@@ -0,0 +1,63 @@
+// Copyright the Browserify authors. MIT License.
+
+import { assertEquals } from "../testing/asserts.ts";
+import * as path from "../path/mod.ts";
+import { isSubdir, getFileInfoType, PathType } from "./_util.ts";
+import { ensureFileSync } from "./ensure_file.ts";
+import { ensureDirSync } from "./ensure_dir.ts";
+
+const testdataDir = path.resolve("fs", "testdata");
+
+Deno.test("_isSubdir", function (): void {
+  const pairs = [
+    ["", "", false, path.posix.sep],
+    ["/first/second", "/first", false, path.posix.sep],
+    ["/first", "/first", false, path.posix.sep],
+    ["/first", "/first/second", true, path.posix.sep],
+    ["first", "first/second", true, path.posix.sep],
+    ["../first", "../first/second", true, path.posix.sep],
+    ["c:\\first", "c:\\first", false, path.win32.sep],
+    ["c:\\first", "c:\\first\\second", true, path.win32.sep],
+  ];
+
+  pairs.forEach(function (p): void {
+    const src = p[0] as string;
+    const dest = p[1] as string;
+    const expected = p[2] as boolean;
+    const sep = p[3] as string;
+    assertEquals(
+      isSubdir(src, dest, sep),
+      expected,
+      `'${src}' should ${expected ? "" : "not"} be parent dir of '${dest}'`
+    );
+  });
+});
+
+Deno.test("_getFileInfoType", function (): void {
+  const pairs = [
+    [path.join(testdataDir, "file_type_1"), "file"],
+    [path.join(testdataDir, "file_type_dir_1"), "dir"],
+  ];
+
+  pairs.forEach(function (p): void {
+    const filePath = p[0] as string;
+    const type = p[1] as PathType;
+    switch (type) {
+      case "file":
+        ensureFileSync(filePath);
+        break;
+      case "dir":
+        ensureDirSync(filePath);
+        break;
+      case "symlink":
+        // TODO(axetroy): test symlink
+        break;
+    }
+
+    const stat = Deno.statSync(filePath);
+
+    Deno.removeSync(filePath, { recursive: true });
+
+    assertEquals(getFileInfoType(stat), type);
+  });
+});