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Refactor basic cli tests (#1595)

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Moved some tests to cli.test.js and got rid from mock-stdin dependency.
This commit is contained in:
Bogdan Chadkin
2021-10-15 12:34:24 +03:00
committed by GitHub
parent 2d6deeaf21
commit 4b4391fbe3
7 changed files with 85 additions and 100 deletions
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83
test/cli/cli.test.js
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@ -1,7 +1,90 @@
'use strict';
/**
* @typedef {import('child_process').ChildProcessWithoutNullStreams} ChildProcessWithoutNullStreams
*/
const fs = require('fs');
const path = require('path');
const { spawn } = require('child_process');
/**
* @type {(proc: ChildProcessWithoutNullStreams) => Promise<string>}
*/
const waitStdout = (proc) => {
return new Promise((resolve) => {
proc.stdout.on('data', (data) => {
resolve(data.toString());
});
});
};
/**
* @type {(proc: ChildProcessWithoutNullStreams) => Promise<void>}
*/
const waitClose = (proc) => {
return new Promise((resolve) => {
proc.on('close', () => {
resolve();
});
});
};
test('shows plugins when flag specified', async () => {
const proc = spawn(
'node',
['../../bin/svgo', '--no-color', '--show-plugins'],
{ cwd: __dirname }
);
const stdout = await waitStdout(proc);
expect(stdout).toMatch(/Currently available plugins:/);
});
test('accepts svg as input stream', async () => {
const proc = spawn('node', ['../../bin/svgo', '--no-color', '-'], {
cwd: __dirname,
});
proc.stdin.write('<svg><title>stdin</title></svg>');
proc.stdin.end();
const stdout = await waitStdout(proc);
expect(stdout).toEqual('<svg/>\n');
});
test('accepts svg as string', async () => {
const input = '<svg><title>string</title></svg>';
const proc = spawn(
'node',
['../../bin/svgo', '--no-color', '--string', input],
{ cwd: __dirname }
);
const stdout = await waitStdout(proc);
expect(stdout).toEqual('<svg/>\n');
});
test('accepts svg as filename', async () => {
const proc = spawn(
'node',
['../../bin/svgo', '--no-color', 'single.svg', '-o', 'output/single.svg'],
{ cwd: __dirname }
);
await waitClose(proc);
const output = fs.readFileSync(
path.join(__dirname, 'output/single.svg'),
'utf-8'
);
expect(output).toEqual('<svg/>');
});
test('output as stream when "-" is specified', async () => {
const proc = spawn(
'node',
['../../bin/svgo', '--no-color', 'single.svg', '-o', '-'],
{ cwd: __dirname }
);
const stdout = await waitStdout(proc);
expect(stdout).toEqual('<svg/>\n');
});
test('should exit with 1 code on syntax error', async () => {
const proc = spawn('node', ['../../bin/svgo', '--no-color', 'invalid.svg'], {
cwd: __dirname,