Move testing to ava (#182)

test/template-literal.js

@@ -0,0 +1,95 @@
+import test from 'ava';
+
+// Spoof supports-color
+require('./_supports-color')(__dirname);
+
+const m = require('..');
+
+test('return an empty string for an empty literal', t => {
+	const ctx = m.constructor();
+	t.is(ctx``, '');
+});
+
+test('return a regular string for a literal with no templates', t => {
+	const ctx = m.constructor({level: 0});
+	t.is(ctx`hello`, 'hello');
+});
+
+test('correctly perform template parsing', t => {
+	const ctx = m.constructor({level: 0});
+	t.is(ctx`{bold Hello, {cyan World!} This is a} test. {green Woo!}`,
+		ctx.bold('Hello,', ctx.cyan('World!'), 'This is a') + ' test. ' + ctx.green('Woo!'));
+});
+
+test('correctly perform template substitutions', t => {
+	const ctx = m.constructor({level: 0});
+	const name = 'Sindre';
+	const exclamation = 'Neat';
+	t.is(ctx`{bold Hello, {cyan.inverse ${name}!} This is a} test. {green ${exclamation}!}`,
+		ctx.bold('Hello,', ctx.cyan.inverse(name + '!'), 'This is a') + ' test. ' + ctx.green(exclamation + '!'));
+});
+
+test('correctly parse and evaluate color-convert functions', t => {
+	const ctx = m.constructor({level: 3});
+	t.is(ctx`{bold.rgb(144,10,178).inverse Hello, {~inverse there!}}`,
+		'\u001B[0m\u001B[1m\u001B[38;2;144;10;178m\u001B[7mHello, ' +
+		'\u001B[27m\u001B[39m\u001B[22m\u001B[0m\u001B[0m\u001B[1m' +
+		'\u001B[38;2;144;10;178mthere!\u001B[39m\u001B[22m\u001B[0m');
+
+	t.is(ctx`{bold.bgRgb(144,10,178).inverse Hello, {~inverse there!}}`,
+		'\u001B[0m\u001B[1m\u001B[48;2;144;10;178m\u001B[7mHello, ' +
+		'\u001B[27m\u001B[49m\u001B[22m\u001B[0m\u001B[0m\u001B[1m' +
+		'\u001B[48;2;144;10;178mthere!\u001B[49m\u001B[22m\u001B[0m');
+});
+
+test('properly handle escapes', t => {
+	const ctx = m.constructor({level: 3});
+	t.is(ctx`{bold hello \{in brackets\}}`,
+		'\u001B[0m\u001B[1mhello {in brackets}\u001B[22m\u001B[0m');
+});
+
+test('throw if there is an unclosed block', t => {
+	const ctx = m.constructor({level: 3});
+	try {
+		console.log(ctx`{bold this shouldn't appear ever\}`);
+		t.fail();
+	} catch (err) {
+		t.is(err.message, 'Template literal has an unclosed block');
+	}
+});
+
+test('throw if there is an invalid style', t => {
+	const ctx = m.constructor({level: 3});
+	try {
+		console.log(ctx`{abadstylethatdoesntexist this shouldn't appear ever}`);
+		t.fail();
+	} catch (err) {
+		t.is(err.message, 'Invalid Chalk style: abadstylethatdoesntexist');
+	}
+});
+
+test('properly style multiline color blocks', t => {
+	const ctx = m.constructor({level: 3});
+	t.is(
+		ctx`{bold
+			Hello! This is a
+			${'multiline'} block!
+			:)
+		} {underline
+			I hope you enjoy
+		}`,
+		'\u001B[0m\u001B[1m\u001B[22m\u001B[0m\n' +
+		'\u001B[0m\u001B[1m\t\t\t\tHello! This is a\u001B[22m\u001B[0m\n' +
+		'\u001B[0m\u001B[1m\t\t\t\tmultiline block!\u001B[22m\u001B[0m\n' +
+		'\u001B[0m\u001B[1m\t\t\t\t:)\u001B[22m\u001B[0m\n' +
+		'\u001B[0m\u001B[1m\t\t\t\u001B[22m\u001B[0m\u001B[0m \u001B[0m\u001B[0m\u001B[4m\u001B[24m\u001B[0m\n' +
+		'\u001B[0m\u001B[4m\t\t\t\tI hope you enjoy\u001B[24m\u001B[0m\n' +
+		'\u001B[0m\u001B[4m\t\t\t\u001B[24m\u001B[0m'
+	);
+});
+
+test('escape interpolated values', t => {
+	const ctx = m.constructor({level: 0});
+	t.is(ctx`Hello {bold hi}`, 'Hello hi');
+	t.is(ctx`Hello ${'{bold hi}'}`, 'Hello {bold hi}');
+});