test: refactor pipe tests to AVA (#608)

ava-test/pipe.js

@@ -0,0 +1,74 @@
+import test from 'ava';
+
+import shell from '..';
+
+shell.config.silent = true;
+
+//
+// Invalids
+//
+
+test('commands like `rm` cannot be on the right side of pipes', t => {
+  t.is(typeof shell.ls('.').rm, 'undefined');
+  t.is(typeof shell.cat('resources/file1.txt').rm, 'undefined');
+});
+
+//
+// Valids
+//
+
+test('piping to cat() should return roughly the same thing', t => {
+  t.is(
+    shell.cat('resources/file1.txt').cat().toString(),
+    shell.cat('resources/file1.txt').toString()
+  );
+});
+
+test('piping ls() into cat() converts to a string-like object', t => {
+  t.is(shell.ls('resources/').cat().toString(), shell.ls('resources/').stdout);
+});
+
+test('grep works in a pipe', t => {
+  const result = shell.ls('resources/').grep('file1');
+  t.is(result.toString(), 'file1\nfile1.js\nfile1.txt\n');
+});
+
+test('multiple pipes work', t => {
+  const result = shell.ls('resources/').cat().grep('file1');
+  t.is(result.toString(), 'file1\nfile1.js\nfile1.txt\n');
+});
+
+test('Equivalent to a simple grep() test case', t => {
+  const result = shell.cat('resources/grep/file').grep(/alpha*beta/);
+  t.falsy(shell.error());
+  t.is(result.toString(), 'alphaaaaaaabeta\nalphbeta\n');
+});
+
+test('Equivalent to a simple sed() test case', t => {
+  const result = shell.cat('resources/grep/file').sed(/l*\.js/, '');
+  t.falsy(shell.error());
+  t.is(
+    result.toString(),
+    'alphaaaaaaabeta\nhowareyou\nalphbeta\nthis line ends in\n\n'
+  );
+});
+
+test('Sort a file by frequency of each line', t => {
+  const result = shell.sort('resources/uniq/pipe').uniq('-c').sort('-n');
+  t.falsy(shell.error());
+  t.is(result.toString(), shell.cat('resources/uniq/pipeSorted').toString());
+});
+
+test('Synchronous exec', t => {
+  const result = shell.cat('resources/grep/file').exec('shx grep "alpha*beta"');
+  t.falsy(shell.error());
+  t.is(result.toString(), 'alphaaaaaaabeta\nalphbeta\n');
+});
+
+test.cb('Asynchronous exec', t => {
+  shell.cat('resources/grep/file').exec('shx grep "alpha*beta"', (code, stdout) => {
+    t.is(code, 0);
+    t.is(stdout, 'alphaaaaaaabeta\nalphbeta\n');
+    t.end();
+  });
+});

test/pipe.js

@@ -1,64 +0,0 @@
-var shell = require('..');
-
-var assert = require('assert');
-
-shell.config.silent = true;
-
-shell.rm('-rf', 'tmp');
-shell.mkdir('tmp');
-
-//
-// Invalids
-//
-
-// commands like `rm` can't be on the right side of pipes
-assert.equal(typeof shell.ls('.').rm, 'undefined');
-assert.equal(typeof shell.cat('resources/file1.txt').rm, 'undefined');
-
-//
-// Valids
-//
-
-// piping to cat() should return roughly the same thing
-assert.strictEqual(shell.cat('resources/file1.txt').cat().toString(),
-    shell.cat('resources/file1.txt').toString());
-
-// piping ls() into cat() converts to a string
-assert.strictEqual(shell.ls('resources/').cat().toString(),
-    shell.ls('resources/').stdout);
-
-var result;
-result = shell.ls('resources/').grep('file1');
-assert.equal(result + '', 'file1\nfile1.js\nfile1.txt\n');
-
-result = shell.ls('resources/').cat().grep('file1');
-assert.equal(result + '', 'file1\nfile1.js\nfile1.txt\n');
-
-// Equivalent to a simple grep() test case
-result = shell.cat('resources/grep/file').grep(/alpha*beta/);
-assert.equal(shell.error(), null);
-assert.equal(result.toString(), 'alphaaaaaaabeta\nalphbeta\n');
-
-// Equivalent to a simple sed() test case
-result = shell.cat('resources/grep/file').sed(/l*\.js/, '');
-assert.ok(!shell.error());
-assert.equal(result.toString(), 'alphaaaaaaabeta\nhowareyou\nalphbeta\nthis line ends in\n\n');
-
-// Sort a file by frequency of each line
-result = shell.sort('resources/uniq/pipe').uniq('-c').sort('-n');
-assert.equal(shell.error(), null);
-assert.equal(result.toString(), shell.cat('resources/uniq/pipeSorted').toString());
-
-// Synchronous exec. To support Windows, the arguments must be passed
-// using double quotes because node, following win32 convention,
-// passes single quotes through to process.argv verbatim.
-result = shell.cat('resources/grep/file').exec('shx grep "alpha*beta"');
-assert.ok(!shell.error());
-assert.equal(result, 'alphaaaaaaabeta\nalphbeta\n');
-
-// Async exec
-shell.cat('resources/grep/file').exec('shx grep "alpha*beta"', function (code, stdout) {
-  assert.equal(code, 0);
-  assert.equal(stdout, 'alphaaaaaaabeta\nalphbeta\n');
-  shell.exit(123);
-});