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denoland-deno/tests/unit_node/module_test.ts
2024-07-25 15:30:28 +10:00

101 lines
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TypeScript

// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
import {
builtinModules,
createRequire,
findSourceMap,
isBuiltin,
Module,
} from "node:module";
import { assert, assertEquals } from "@std/assert";
import process from "node:process";
import * as path from "node:path";
Deno.test("[node/module _preloadModules] has internal require hook", () => {
// Check if it's there
// deno-lint-ignore no-explicit-any
(Module as any)._preloadModules([
"./tests/unit_node/testdata/add_global_property.js",
]);
// deno-lint-ignore no-explicit-any
assertEquals((globalThis as any).foo, "Hello");
});
Deno.test("[node/module runMain] loads module using the current process.argv", () => {
process.argv = [
process.argv[0],
"./tests/unit_node/testdata/add_global_property_run_main.js",
];
// deno-lint-ignore no-explicit-any
(Module as any).runMain();
// deno-lint-ignore no-explicit-any
assertEquals((globalThis as any).calledViaRunMain, true);
});
Deno.test("[node/module _nodeModulePaths] prevents duplicate /node_modules/node_modules suffix", () => {
// deno-lint-ignore no-explicit-any
const actual: string[] = (Module as any)._nodeModulePaths(
path.join(process.cwd(), "testdata", "node_modules", "foo"),
);
assert(
!actual.some((dir) => /node_modules[/\\]node_modules/g.test(dir)),
"Duplicate 'node_modules/node_modules' suffix found",
);
});
Deno.test("[node/module _nodeModulePaths] prevents duplicate root /node_modules", () => {
// deno-lint-ignore no-explicit-any
const actual: string[] = (Module as any)._nodeModulePaths(
path.join(process.cwd(), "testdata", "node_modules", "foo"),
);
assert(
new Set(actual).size === actual.length,
"Duplicate path entries found",
);
const root = path.parse(actual[0]).root;
assert(
actual.includes(path.join(root, "node_modules")),
"Missing root 'node_modules' directory",
);
});
Deno.test("Built-in Node modules have `node:` prefix", () => {
let thrown = false;
try {
// @ts-ignore We want to explicitly test wrong call signature
createRequire();
} catch (e) {
thrown = true;
const stackLines = e.stack.split("\n");
// Assert that built-in node modules have `node:<mod_name>` specifiers.
assert(stackLines.some((line: string) => line.includes("(node:module:")));
}
assert(thrown);
});
Deno.test("[node/module isBuiltin] recognizes node builtins", () => {
assert(isBuiltin("node:fs"));
assert(isBuiltin("node:test"));
assert(isBuiltin("fs"));
assert(isBuiltin("buffer"));
assert(!isBuiltin("internal/errors"));
assert(!isBuiltin("test"));
assert(!isBuiltin(""));
// deno-lint-ignore no-explicit-any
assert(!isBuiltin(undefined as any));
});
// https://github.com/denoland/deno/issues/22731
Deno.test("[node/module builtinModules] has 'module' in builtins", () => {
assert(builtinModules.includes("module"));
});
// https://github.com/denoland/deno/issues/18666
Deno.test("[node/module findSourceMap] is a function", () => {
assertEquals(findSourceMap("foo"), undefined);
});