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std/node/module_test.ts

Deno standard library
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const { test } = Deno;import { assertEquals, assert, assertStrContains } from "../testing/asserts.ts";import { createRequire } from "./module.ts";
// TS compiler would try to resolve if function named "require"// Thus suffixing it with require_ to fix this...const require_ = createRequire(import.meta.url);
test(function requireSuccess() { // Relative to import.meta.url const result = require_("./tests/cjs/cjs_a.js"); assert("helloA" in result); assert("helloB" in result); assert("C" in result); assert("leftPad" in result); assertEquals(result.helloA(), "A"); assertEquals(result.helloB(), "B"); assertEquals(result.C, "C"); assertEquals(result.leftPad("pad", 4), " pad");});
test(function requireCycle() { const resultA = require_("./tests/cjs/cjs_cycle_a"); const resultB = require_("./tests/cjs/cjs_cycle_b"); assert(resultA); assert(resultB);});
test(function requireBuiltin() { const fs = require_("fs"); assert("readFileSync" in fs); const { readFileSync, isNull, extname } = require_("./tests/cjs/cjs_builtin"); assertEquals( readFileSync("./node/_fs/testdata/hello.txt", { encoding: "utf8" }), "hello world" ); assert(isNull(null)); assertEquals(extname("index.html"), ".html");});
test(function requireIndexJS() { const { isIndex } = require_("./tests/cjs"); assert(isIndex);});
test(function requireNodeOs() { const os = require_("os"); assert(os.arch); assert(typeof os.arch() == "string");});
test(function requireStack() { const { hello } = require_("./tests/cjs/cjs_throw"); try { hello(); } catch (e) { assertStrContains(e.stack, "/tests/cjs/cjs_throw.js"); }});