Add tests for the config

test/config.js

@@ -0,0 +1,85 @@
+import path from 'path';
+import os from 'os';
+import test from 'ava';
+import sinon from 'sinon';
+import proxyquire from 'proxyquire';
+
+const homedirStub = sinon.stub(os, 'homedir');
+const fixtureBasePath = path.resolve('test', 'fixtures', 'config');
+
+test('should return config from `.np-config.json` in home-directory when global binary used', async t => {
+	homedirStub.returns(path.resolve(fixtureBasePath, 'homedir1'));
+	const config = proxyquire('../source/config', {
+		'is-installed-globally': true,
+		'pkg-dir': async () => {
+			return path.resolve(fixtureBasePath, 'pkg-dir');
+		}
+	});
+	t.deepEqual(await config(), {yarn: false});
+});
+
+test('should return config from `.np-config.js` in home-directory when global binary used', async t => {
+	homedirStub.returns(path.resolve(fixtureBasePath, 'homedir2'));
+	const config = proxyquire('../source/config', {
+		'is-installed-globally': true,
+		'pkg-dir': async () => {
+			return path.resolve(fixtureBasePath, 'pkg-dir');
+		}
+	});
+	t.deepEqual(await config(), {yarn: true, contents: 'dist'});
+});
+
+test('should return config from `package.json` when local binary used', async t => {
+	const config = proxyquire('../source/config', {
+		'is-installed-globally': false,
+		'pkg-dir': async () => {
+			return path.resolve(fixtureBasePath, 'pkg-dir');
+		}
+	});
+	t.deepEqual(await config(), {yarn: true});
+});
+
+test('should only return config from home-directory when global binary used', async t => {
+	homedirStub.returns(path.resolve(fixtureBasePath, 'homedir1'));
+	const globalConfig = proxyquire('../source/config', {
+		'is-installed-globally': true,
+		'pkg-dir': async () => {
+			throw new Error('access local config');
+		}
+	});
+	const localConfig = proxyquire('../source/config', {
+		'is-installed-globally': false,
+		'pkg-dir': async () => {
+			throw new Error('expected');
+		}
+	});
+	t.deepEqual(await globalConfig(), {yarn: false});
+	await t.throwsAsync(localConfig());
+});
+
+test('should only return config from local package when local binary used', async t => {
+	const globalConfig = proxyquire('../source/config', {
+		'is-installed-globally': true,
+		'pkg-dir': async () => {
+			return path.resolve(fixtureBasePath, 'local');
+		},
+		os: {
+			homedir: () => {
+				throw new Error('expected');
+			}
+		}
+	});
+	const localConfig = proxyquire('../source/config', {
+		'is-installed-globally': false,
+		'pkg-dir': async () => {
+			return path.resolve(fixtureBasePath, 'local');
+		},
+		os: {
+			homedir: () => {
+				throw new Error('access global config in home-directory');
+			}
+		}
+	});
+	await t.throwsAsync(globalConfig());
+	t.deepEqual(await localConfig(), {local: true});
+});

test/fixtures/config/homedir1/.np-config.json

@@ -0,0 +1,3 @@
+{
+	"yarn": false
+}

test/fixtures/config/homedir2/.np-config.js

@@ -0,0 +1,4 @@
+module.exports = {
+	yarn: true,
+	contents: 'dist'
+}

test/fixtures/config/local/.np-config.json

@@ -0,0 +1,3 @@
+{
+	"local": true
+}

test/fixtures/config/pkg-dir/package.json

@@ -0,0 +1,6 @@
+{
+	"name": "test-fixtures",
+	"np": {
+		"yarn": true
+	}
+}