repeated-imports.any.js

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This WPT test may be referenced by the following Test IDs:
- /html/semantics/scripting-1/the-script-element/json-module/repeated-imports.any.html - WPT Dashboard Interop Dashboard
- /html/semantics/scripting-1/the-script-element/json-module/repeated-imports.any.sharedworker.html - WPT Dashboard Interop Dashboard
- /html/semantics/scripting-1/the-script-element/json-module/repeated-imports.any.worker.html - WPT Dashboard Interop Dashboard

// META: global=window,dedicatedworker,sharedworker

// META: script=/common/utils.js

promise_test(async test => {

    await promise_rejects_js(test, TypeError,

      import("./module.json"),

      "Dynamic import of a JSON module without a type attribute should fail");

    // This time the import should succeed because we're using the correct

    // import even though the previous attempt with the same  specifier failed.

    const result = await import("./module.json", { with: { type: "json" } });

    assert_true(result.default.test);

}, "Importing a specifier that previously failed due to an incorrect type attribute can succeed if the correct attribute is later given");

promise_test(async test => {

    // Append a URL fragment to the specifier so that this is independent

    // from the previous test.

    const result = await import("./module.json#2", { with: { type: "json" } });

    assert_true(result.default.test);

    await promise_rejects_js(test, TypeError,

      import("./module.json#2"),

      "Dynamic import should fail with the type attribute missing even if the same specifier previously succeeded");

}, "Importing a specifier that previously succeeded with the correct type attribute should fail if the incorrect attribute is later given");

promise_test(async test => {

    const uuid_token = token();

    // serve-json-then-js.py gives us JSON the first time

    const result_json = await import(`../serve-json-then-js.py?key=${uuid_token}`, { with: { type: "json" } });

    assert_equals(result_json.default.hello, "world");

    // Import using the same specifier again; this time we get JS, which

    // should succeed since we're not asserting a non-JS type this time.

    const result_js = await import(`../serve-json-then-js.py?key=${uuid_token}`);

    assert_equals(result_js.default, "hello");

}, "Two modules of different type with the same specifier can load if the server changes its responses");

promise_test(async test => {

    const uuid_token = token();

    // serve-json-then-js.py gives us JSON the first time

    await promise_rejects_js(test, TypeError,

      import(`../serve-json-then-js.py?key=${uuid_token}`),

      "Dynamic import of JS with a JSON type attribute should fail");

    // Import using the same specifier/module type pair again; this time we get JS,

    // but the import should still fail because the module map entry for this

    // specifier/module type pair already contains a failure.

    await promise_rejects_js(test, TypeError,

      import(`../serve-json-then-js.py?key=${uuid_token}`),

      "import should always fail if the same specifier/type attribute pair failed previously");

}, "An import should always fail if the same specifier/type attribute pair failed previously");

promise_test(async test => {

    const uuid_token = token();

    // serve-json-then-js.py gives us JSON the first time

    const result_json = await import(`../serve-json-then-js.py?key=${uuid_token}`, { with: { type: "json" } });

    assert_equals(result_json.default.hello, "world");

    // If this were to do another fetch, the import would fail because

    // serve-json-then-js.py would give us JS this time. But, the module map

    // entry for this specifier/module type pair already exists, so we

    // successfully reuse the entry instead of fetching again.

    const result_json_2 = await import(`../serve-json-then-js.py?key=${uuid_token}`, { with: { type: "json" } });

    assert_equals(result_json_2.default.hello, "world");

}, "If an import previously succeeded for a given specifier/type attribute pair, future uses of that pair should yield the same result");