diff --git a/test/test.js b/test/test.js
index 77a6994..dbde160 100644
--- a/test/test.js
+++ b/test/test.js
@@ -12,86 +12,86 @@ const serveStatic = require('serve-static');
 const plugin = require('../');
 
 function read(filename) {
-	return fs.readFileSync(path.join(__dirname, 'fixtures', 'styles', filename), 'utf8');
+    return fs.readFileSync(path.join(__dirname, 'fixtures', 'styles', filename), 'utf8');
 }
 
 const test = function (input, output, opts, done) {
-	input = read(input);
-	output = read(output);
-
-	opts = defaults(opts || {}, {
-		assetPaths: ['//localhost:3000/styles/']
-	});
-
-	postcss([plugin(opts)]).process(input).then(result => {
-		assert.equal(result.css, output);
-		assert.isEmpty(result.warnings());
-	}).then(done).catch(err => {
-		done(err);
-	});
+    input = read(input);
+    output = read(output);
+
+    opts = defaults(opts || {}, {
+        assetPaths: ['//localhost:3000/styles/']
+    });
+
+    postcss([plugin(opts)]).process(input).then(result => {
+        assert.equal(result.css, output);
+        assert.isEmpty(result.warnings());
+    }).then(done).catch(err => {
+        done(err);
+    });
 };
 
 function startServer(docroot) {
-	const serve = serveStatic(docroot);
-	const server = http.createServer((req, res) => {
-		const done = finalhandler(req, res);
-		serve(req, res, done);
-	});
-	server.listen(3000);
-
-	return server;
+    const serve = serveStatic(docroot);
+    const server = http.createServer((req, res) => {
+        const done = finalhandler(req, res);
+        serve(req, res, done);
+    });
+    server.listen(3000);
+
+    return server;
 }
 
 /* eslint max-len:0 */
 describe('postcss-image-inliner', () => {
-	let server;
-
-	beforeEach(() => {
-		server = startServer(path.join(__dirname, 'fixtures'));
-	});
-	afterEach(done => {
-		server.close(done);
-	});
-
-	it('should skip too big images', done => {
-		test('big.css', 'big.css', {maxFileSize: 1}, done);
-	});
-
-	it('should handle multiple background images', done => {
-		test('multi.in.css', 'multi.out.css', {}, done);
-	});
-
-	it('should handle background shorthand', done => {
-		test('shorthand.in.css', 'shorthand.out.css', {}, done);
-	});
-
-	it('should handle media queries', done => {
-		test('media.in.css', 'media.out.css', {}, done);
-	});
-
-	it('should consider base64Svg option', done => {
-		test('b64svg.in.css', 'b64svg.out.css', {b64Svg: true, maxFileSize: 0}, done);
-	});
-
-	it('should do nothing on missing files in non strict mode', done => {
-		test('missing.in.css', 'missing.out.css', {}, done);
-	});
-
-	it('should handle urls used for content property', done => {
-		test('pseudo.in.css', 'pseudo.out.css', {}, done);
-	});
-
-	it('should fail on missing files in strict mode', done => {
-		test('missing.in.css', 'missing.out.css', {strict: true}, error => {
-			if (error) {
-				done();
-			} else {
-				done(new Error('Should fail'));
-			}
-		});
-	});
-
-	it('should allow globbing', done => {
-		test('glob.in.css', 'glob.out.css', {assetPaths: 'test/*/images/'}, done);
-	});
+    let server;
+
+    beforeEach(() => {
+        server = startServer(path.join(__dirname, 'fixtures'));
+    });
+    afterEach(done => {
+        server.close(done);
+    });
+
+    it('should skip too big images', done => {
+        test('big.css', 'big.css', {maxFileSize: 1}, done);
+    });
+
+    it('should handle multiple background images', done => {
+        test('multi.in.css', 'multi.out.css', {}, done);
+    });
+
+    it('should handle background shorthand', done => {
+        test('shorthand.in.css', 'shorthand.out.css', {}, done);
+    });
+
+    it('should handle media queries', done => {
+        test('media.in.css', 'media.out.css', {}, done);
+    });
+
+    it('should consider base64Svg option', done => {
+        test('b64svg.in.css', 'b64svg.out.css', {b64Svg: true, maxFileSize: 0}, done);
+    });
+
+    it('should do nothing on missing files in non strict mode', done => {
+        test('missing.in.css', 'missing.out.css', {}, done);
+    });
+
+    it('should handle urls used for content property', done => {
+        test('pseudo.in.css', 'pseudo.out.css', {}, done);
+    });
+
+    it('should fail on missing files in strict mode', done => {
+        test('missing.in.css', 'missing.out.css', {strict: true}, error => {
+            if (error) {
+                done();
+            } else {
+                done(new Error('Should fail'));
+            }
+        });
+    });
+
+    it('should allow globbing', done => {
+        test('glob.in.css', 'glob.out.css', {assetPaths: 'test/*/images/'}, done);
+    });
 });