mirror of
https://github.com/denoland/std.git
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253 lines
6.1 KiB
TypeScript
253 lines
6.1 KiB
TypeScript
// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
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import { stripColor } from "../fmt/colors.ts";
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import { ensureDir } from "../fs/mod.ts";
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import { dirname, fromFileUrl, join } from "../path/mod.ts";
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import { assert, assertInstanceOf, AssertionError, fail } from "./asserts.ts";
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import { assertSnapshot } from "./snapshot.ts";
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class TestClass {
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a = 1;
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b = 2;
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init() {
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this.b = 3;
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}
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get getA() {
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return this.a;
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}
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func() {}
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}
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const map = new Map();
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map.set("Hello", "World!");
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map.set(() => "Hello", "World!");
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map.set(1, 2);
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Deno.test("Snapshot Test", async (t) => {
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await assertSnapshot(t, { a: 1, b: 2 });
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await assertSnapshot(t, new TestClass());
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await assertSnapshot(t, map);
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await assertSnapshot(t, new Set([1, 2, 3]));
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await assertSnapshot(t, { fn() {} });
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await assertSnapshot(t, function fn() {});
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await assertSnapshot(t, [1, 2, 3]);
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await assertSnapshot(t, "hello world");
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});
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Deno.test("Snapshot Test - step", async (t) => {
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await assertSnapshot(t, { a: 1, b: 2 });
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await t.step("Nested", async (t) => {
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await assertSnapshot(t, new TestClass());
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await assertSnapshot(t, map);
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await t.step("Nested Nested", async (t) => {
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await assertSnapshot(t, new Set([1, 2, 3]));
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await assertSnapshot(t, { fn() {} });
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await assertSnapshot(t, function fn() {});
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});
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await assertSnapshot(t, [1, 2, 3]);
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});
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await assertSnapshot(t, "hello world");
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});
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Deno.test("Snapshot Test - Adverse String \\ ` ${}", async (t) => {
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await assertSnapshot(t, "\\ ` ${}");
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});
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Deno.test("Snapshot Test - Multi-Line Strings", async (t) => {
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await t.step("string", async (t) => {
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await assertSnapshot(
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t,
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`
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<html>
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<head>
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<title>Snapshot Test - Multi-Line Strings</title>
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</head>
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<body>
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<h1>
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Snapshot Test - Multi-Line Strings
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</h2>
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<p>
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This is a snapshot of a multi-line string.
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</p>
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</body>
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</html>`,
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);
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});
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await t.step("string in array", async (t) => {
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await assertSnapshot(t, [
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`
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<h1>
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Header
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</h1>`,
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`
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<p>
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Content
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</p>`,
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]);
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});
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await t.step("string in object", async (t) => {
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await assertSnapshot(t, {
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str: `
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Line #1
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Line #2
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Line #3`,
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});
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});
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});
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Deno.test("Snapshot Test - Failed Assertion", async (t) => {
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await t.step("Object", async (t) => {
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try {
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await assertSnapshot(t, [1, 2]);
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fail("Expected snapshot not to match");
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} catch (error) {
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assertInstanceOf(error, AssertionError);
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await assertSnapshot(t, stripColor(error.message));
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}
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});
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await t.step("String", async (t) => {
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try {
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await assertSnapshot(t, "Hello!");
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fail("Expected snapshot not to match");
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} catch (error) {
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assertInstanceOf(error, AssertionError);
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await assertSnapshot(t, stripColor(error.message));
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}
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});
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});
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Deno.test("Snapshot Test - Update", async (t) => {
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const TEMP_DIR = ".tmp";
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async function runTestWithUpdateFlag(test: string, deleteTempDir = true) {
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const testDir = dirname(fromFileUrl(import.meta.url));
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const tempDir = join(testDir, TEMP_DIR);
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const tempTestFileName = "test.ts";
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const tempTestFilePath = join(tempDir, tempTestFileName);
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await ensureDir(tempDir);
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await Deno.writeTextFile(tempTestFilePath, test);
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const process = await Deno.run({
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cmd: ["deno", "test", "--allow-all", tempTestFilePath, "--", "-u"],
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stdout: "piped",
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stderr: "piped",
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});
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const output = await process.output();
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const error = await process.stderrOutput();
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process.close();
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if (deleteTempDir) {
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await Deno.remove(tempDir, { recursive: true });
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}
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return {
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output: new TextDecoder().decode(output),
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error: new TextDecoder().decode(error),
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};
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}
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function formatOutput(string: string) {
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// Strip colors and obfuscate any timings
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return stripColor(string).replace(/([0-9])+m?s/g, "--ms");
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}
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function formatError(string: string) {
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// Strip colors and remove "Check file:///workspaces/deno_std/testing/.tmp/test.ts"
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// as this is always output to stderr
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return stripColor(string).replace(/^Check file:\/\/(.+)\n/g, "");
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}
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/**
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* New snapshot
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*/
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const result1 = await runTestWithUpdateFlag(
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`
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import { assertSnapshot } from "../snapshot.ts";
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Deno.test("Snapshot Test - Update", async (t) => {
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await assertSnapshot(t, [
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1,
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2,
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]);
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});
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`,
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false,
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);
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await assertSnapshot(t, formatOutput(result1.output));
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assert(!formatError(result1.error), "unexpected output to stderr");
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/**
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* Existing snapshot - no changes
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*/
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const result2 = await runTestWithUpdateFlag(
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`
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import { assertSnapshot } from "../snapshot.ts";
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Deno.test("Snapshot Test - Update", async (t) => {
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await assertSnapshot(t, [
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1,
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2,
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]);
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});
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`,
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false,
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);
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await assertSnapshot(t, formatOutput(result2.output));
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assert(!formatError(result2.error), "unexpected output to stderr");
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/**
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* Existing snapshot - updates
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*/
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const result3 = await runTestWithUpdateFlag(`
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import { assertSnapshot } from "../snapshot.ts";
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Deno.test("Snapshot Test - Update", async (t) => {
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await assertSnapshot(t, [
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1,
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2,
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3,
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5,
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]);
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});
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`);
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await assertSnapshot(t, formatOutput(result3.output));
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assert(!formatError(result3.error), "unexpected output to stderr");
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});
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// Regression test for https://github.com/denoland/deno_std/issues/2140
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// Long strings should not be truncated with ellipsis
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Deno.test("Snapshot Test - Regression #2140", async (t) => {
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await assertSnapshot(t, {
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title: "Testing a page",
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content: `
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<h1>Testing a page</h1>
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<p>This is a test</p>
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<ul>
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<li>1</li>
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<li>2</li>
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<li>3</li>
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<li>4</li>
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</ul>
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`,
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});
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});
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// Regression test for https://github.com/denoland/deno_std/issues/2144
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// Empty arrays should be compacted
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Deno.test("Snapshot Test - Regression #2144", async (t) => {
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const config = {
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fmt: {
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files: {
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exclude: [],
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include: [],
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},
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options: {},
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},
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};
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await assertSnapshot(t, config);
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});
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