mozilla-central/testing/web-platform/tests/html/semantics/scripting-1/the-script-element/module/import-meta/import-meta-resolve.any.js (file symbol)

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Test Info:

  • This WPT test may be referenced by the following Test IDs:
// META: global=dedicatedworker-module,sharedworker-module,serviceworker-module
import { importMetaOnRootModule, importMetaOnDependentModule }
from "./import-meta-root.js";
test(() => {
assert_equals(typeof import.meta.resolve, "function");
assert_equals(import.meta.resolve.name, "resolve");
assert_equals(import.meta.resolve.length, 1);
assert_equals(Object.getPrototypeOf(import.meta.resolve), Function.prototype);
}, "import.meta.resolve is a function with the right properties");
test(() => {
assert_false(isConstructor(import.meta.resolve));
assert_throws_js(TypeError, () => new import.meta.resolve("./x"));
}, "import.meta.resolve is not a constructor");
test(() => {
// See also tests in ./import-meta-resolve-importmap.html.
assert_equals(import.meta.resolve({ toString() { return "./x"; } }), resolveURL("x"));
assert_throws_js(TypeError, () => import.meta.resolve(Symbol("./x")),
"symbol");
assert_throws_js(TypeError, () => import.meta.resolve(),
"no argument (which is treated like \"undefined\")");
}, "import.meta.resolve ToString()s its argument");
test(() => {
assert_equals(import.meta.resolve("./x"), resolveURL("x"),
"current module import.meta");
assert_equals(importMetaOnRootModule.resolve("./x"), resolveURL("x"),
"sibling module import.meta");
assert_equals(importMetaOnDependentModule.resolve("./x"), resolveURL("x"),
"dependency module import.meta");
}, "Relative URL-like specifier resolution");
test(() => {
assert_equals(import.meta.resolve("https://example.com/"), "https://example.com/",
"current module import.meta");
assert_equals(importMetaOnRootModule.resolve("https://example.com/"), "https://example.com/",
"sibling module import.meta");
assert_equals(importMetaOnDependentModule.resolve("https://example.com/"), "https://example.com/",
"dependency module import.meta");
}, "Absolute URL-like specifier resolution");
test(() => {
const invalidSpecifiers = [
"pumpkins.js",
".tomato",
"..zuccini.mjs",
".\\yam.es"
];
for (const specifier of invalidSpecifiers) {
assert_throws_js(TypeError, () => import.meta.resolve(specifier), specifier);
}
}, "Invalid module specifiers");
test(() => {
const { resolve } = import.meta;
assert_equals(resolve("https://example.com/"), "https://example.com/", "current module import.meta");
}, "Works fine with no this value");
function resolveURL(urlRelativeToThisTest) {
return (new URL(urlRelativeToThisTest, location.href)).href;
}
function isConstructor(o) {
try {
new (new Proxy(o, { construct: () => ({}) }));
return true;
} catch {
return false;
}
}