Make sass-true understand how to include sass files from bower_compon…

…ents folder (#521)

lib/tasks/test-sass.js

@@ -13,9 +13,15 @@ const trueTest = function (config) {
 	const testRunner = path.join(config.cwd, 'test/scss/test-runner.js');
 	return writeFile(testRunner, `
 		const path = require('path');
+		const componentBase = path.join(__dirname, '../../');
 		const sassFile = path.join(__dirname, 'index.test.scss');
 		const sassTrue = require('${require.resolve('sass-true')}');
-		sassTrue.runSass({file: sassFile}, describe, it);
+		sassTrue.runSass({
+			file: sassFile,
+			// We use this to silence the sass console output when running "obt test".
+			functions: {},
+			includePaths: [componentBase, path.join(componentBase, 'bower_components')]
+		}, describe, it);
 	`)
 		.then(() => commandLine.run('mocha', ['test/scss'], Object.assign({}, config, { localDir: path.join(__dirname, "../../")})))
 		.finally(() => unlink(testRunner));