1 files changed, 57 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/semantics/scripting-1/the-script-element/module/import-meta/import-meta-resolve-importmap.html b/testing/web-platform/tests/html/semantics/scripting-1/the-script-element/module/import-meta/import-meta-resolve-importmap.html
new file mode 100644
index 0000000000..214b9bb59c
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/scripting-1/the-script-element/module/import-meta/import-meta-resolve-importmap.html
@@ -0,0 +1,57 @@
+<!DOCTYPE html>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+
+<!--
+  More extensive tests of import maps and import.meta.resolve() will be
+  located in the import maps test suite. This contains some basic tests plus
+  tests some tricky parts of the import.meta.resolve() algorithm around string
+  conversion which are only testable with import maps.
+-->
+
+<script type="importmap">
+{
+  "imports": {
+    "bare": "https://example.com/",
+    "https://example.com/rewrite": "https://example.com/rewritten",
+
+    "1": "https://example.com/PASS-1",
+    "null": "https://example.com/PASS-null",
+    "undefined": "https://example.com/PASS-undefined",
+    "[object Object]": "https://example.com/PASS-object",
+
+    "./start": "./resources/export-1.mjs",
+    "./resources/export-1.mjs": "./resources/export-2.mjs"
+  }
+}
+</script>
+
+<script type="module">
+test(() => {
+  assert_equals(import.meta.resolve("bare"), "https://example.com/");
+}, "import.meta.resolve() given an import mapped bare specifier");
+
+test(() => {
+  assert_equals(import.meta.resolve("https://example.com/rewrite"), "https://example.com/rewritten");
+}, "import.meta.resolve() given an import mapped  URL-like specifier");
+
+test(() => {
+  assert_equals(import.meta.resolve(), "https://example.com/PASS-undefined", "no-arg case");
+
+  assert_equals(import.meta.resolve(1), "https://example.com/PASS-1");
+  assert_equals(import.meta.resolve(null), "https://example.com/PASS-null");
+  assert_equals(import.meta.resolve(undefined), "https://example.com/PASS-undefined");
+
+  // Only toString() methods are consulted by ToString, not valueOf() ones.
+  // So this becomes "[object Object]".
+  assert_equals(import.meta.resolve({ valueOf() { return "./x"; } }), "https://example.com/PASS-object");
+}, "Testing the ToString() step of import.meta.resolve() via import maps");
+
+promise_test(async () => {
+  const one = (await import("./start")).default;
+  assert_equals(one, 1);
+
+  const two = (await import(import.meta.resolve("./start"))).default;
+  assert_equals(two, 2);
+}, "import(import.meta.resolve(x)) can be different from import(x)");
+</script>