Introduce modern api and associated tests

Author: mattyrob

gruntfile.js

@@ -13,6 +13,15 @@ module.exports = grunt => {
 					'test/tmp/compile2.css': 'test/fixtures/test.scss'
 				}
 			},
+			modernCompile: {
+				options: {
+					api: 'modern'
+				},
+				files: {
+					'test/tmp/modern-compile.css': 'test/fixtures/test.scss',
+					'test/tmp/modern-compile2.css': 'test/fixtures/test.scss'
+				}
+			},
 			includePaths: {
 				options: {
 					includePaths: ['test/fixtures']

tasks/sass.js

@@ -19,15 +19,20 @@ module.exports = grunt => {
 		(async () => {
 			await Promise.all(this.files.map(async item => {
 				const [src] = item.src;
+				let result;
 
 				if (!src || path.basename(src)[0] === '_') {
 					return;
 				}
 
-				const result = await util.promisify(options.implementation.render)(Object.assign({}, options, {
-					file: src,
-					outFile: item.dest
-				}));
+				if (options.api === 'modern') {
+					result = await options.implementation.compileAsync(src, options);
+				} else {
+					result = await util.promisify(options.implementation.render)(Object.assign({}, options, {
+						file: src,
+						outFile: item.dest
+					}));
+				}
 
 				grunt.file.write(item.dest, result.css);
 

test/test.js

@@ -13,6 +13,17 @@ exports.sass = {
 
 		test.done();
 	},
+	modernCompile(test) {
+		test.expect(2);
+
+		const actual = grunt.file.read('test/tmp/modern-compile.css');
+		const actual2 = grunt.file.read('test/tmp/modern-compile2.css');
+		const expected = grunt.file.read('test/expected/compile.css');
+		test.equal(actual, expected, 'should compile SCSS to CSS');
+		test.equal(actual2, expected, 'should compile SCSS to CSS');
+
+		test.done();
+	},
 	includePaths(test) {
 		test.expect(1);