Merge 6cbdd16 into 506dd81

index.js

@@ -64,7 +64,9 @@ function filterByVersion(browsers, version) {
     if (start < 0) startIndex = endIndex + Number(start);
     else if (start !== 'oldest') startIndex = versions.indexOf(start);
 
-    if (startIndex < 0) throw new Error(`Unable to find start version: ${start}`);
+    if (startIndex < 0) {
+      throw new Error(`Unable to find start version: ${start}`);
+    }
     if (endIndex < 0) throw new Error(`Unable to find end version: ${end}`);
 
     return browsers.slice(startIndex, endIndex + 1);
@@ -90,7 +92,9 @@ function transform(wanted, available) {
   wanted.forEach((browser) => {
     const name = browser.name.toLowerCase();
 
-    if (!available.has(name)) return;
+    if (!available.has(name)) {
+      throw new Error(`Browser ${name} is not available`);
+    }
 
     let list = available.get(name).slice().sort(compare);
     let platforms = browser.platform;

test/test.js

@@ -23,9 +23,10 @@ test('allows to retrieve all browsers on Sauce Labs', (t) => {
   });
 });
 
-test('excludes browsers not available on Sauce Labs', (t) => {
-  sauceBrowsers([{ name: 'foo' }]).then((browsers) => {
-    t.deepEqual(browsers, []);
+test('throws if browser is not available on Sauce Labs', (t) => {
+  sauceBrowsers([{ name: 'foo' }]).catch((err) => {
+    t.equal(err instanceof Error, true);
+    t.equals(err.message, 'Browser foo is not available');
     t.end();
   });
 });