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This PR brings assertOps and assertResources sanitizers to Deno.test() API. assertOps checks that test doesn't leak async ops, ie. there are no unresolved promises originating from Deno APIs. Enabled by default, can be disabled using Deno.TestDefinition.disableOpSanitizer. assertResources checks that test doesn't leak resources, ie. all resources used in test are closed. For example; if a file is opened during a test case it must be explicitly closed before test case finishes. It's most useful for asynchronous generators. Enabled by default, can be disabled using Deno.TestDefinition.disableResourceSanitizer. We've used those sanitizers in internal runtime tests and it proved very useful in surfacing incorrect tests which resulted in interference between the tests. All tests have been sanitized. Closes #4208
19 lines
588 B
TypeScript
19 lines
588 B
TypeScript
// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
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import { assertStrictEq } from "../../testing/asserts.ts";
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Deno.test("[examples/welcome] print a welcome message", async () => {
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const decoder = new TextDecoder();
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const process = Deno.run({
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args: [Deno.execPath(), "welcome.ts"],
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cwd: "examples",
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stdout: "piped"
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});
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try {
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const output = await process.output();
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const actual = decoder.decode(output).trim();
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const expected = "Welcome to Deno 🦕";
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assertStrictEq(actual, expected);
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} finally {
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process.close();
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}
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});
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