1 files changed, 31 insertions, 0 deletions
diff --git a/cli/tests/unit/path_from_url_test.ts b/cli/tests/unit/path_from_url_test.ts
new file mode 100644
index 000000000..5e7203a58
--- /dev/null
+++ b/cli/tests/unit/path_from_url_test.ts
@@ -0,0 +1,31 @@
+import { assertThrows, assertEquals, unitTest } from "./test_util.ts";
+
+// @ts-expect-error TypeScript (as of 3.7) does not support indexing namespaces by symbol
+const { pathFromURL } = Deno[Deno.internal];
+
+unitTest(
+  { ignore: Deno.build.os === "windows" },
+  function pathFromURLPosix(): void {
+    assertEquals(pathFromURL("file:///test/directory"), "/test/directory");
+    assertThrows(() => pathFromURL("file://host/test/directory"));
+    assertThrows(() => pathFromURL("https://deno.land/welcome.ts"));
+  }
+);
+
+unitTest(
+  { ignore: Deno.build.os !== "windows" },
+  function pathFromURLWin32(): void {
+    assertEquals(pathFromURL("file:///c:/windows/test"), "c:\\windows\\test");
+    assertThrows(() => pathFromURL("file:///thing/test"));
+    assertThrows(() => pathFromURL("https://deno.land/welcome.ts"));
+    /* TODO(ry) Add tests for these situations
+     * ampersand_&.tx                 file:///D:/weird_names/ampersand_&.txt
+     * at_@.txt                       file:///D:/weird_names/at_@.txt
+     * emoji_🙃.txt                   file:///D:/weird_names/emoji_%F0%9F%99%83.txt
+     * percent_%.txt                  file:///D:/weird_names/percent_%25.txt
+     * pound_#.txt                    file:///D:/weird_names/pound_%23.txt
+     * space_ .txt                    file:///D:/weird_names/space_%20.txt
+     * swapped_surrogate_pair_��.txt  file:///D:/weird_names/swapped_surrogate_pair_%EF%BF%BD%EF%BF%BD.txt
+     */
+  }
+);