test: woof command language selection

src/cli/commands/woof.ts

@@ -8,7 +8,7 @@ const woofs = {
   cs: ' Haf!',
 };
 
-export = function woof(...args: MethodArgs) {
+export function getWoofLanguage(args: MethodArgs): string {
   const options = args.pop() as ArgsOptions;
   let lang = 'en';
 
@@ -18,6 +18,12 @@ export = function woof(...args: MethodArgs) {
   ) {
     lang = options.language;
   }
+
+  return lang;
+}
+
+export default function woof(...args: MethodArgs) {
+  const lang = getWoofLanguage(args);
   console.log(`
     |         |
    /|         |\\
@@ -34,4 +40,4 @@ export = function woof(...args: MethodArgs) {
         \\U/ --( ${woofs[lang]} )
                \\-----/
 `);
-};
+}

test/woof.spec.ts

@@ -0,0 +1,28 @@
+import { getWoofLanguage } from '../src/cli/commands/woof';
+
+describe('Woof command - Language option', () => {
+  it('Default language is "en"', () => {
+    // $ snyk woof
+    expect(getWoofLanguage([{} as any])).toEqual('en');
+  });
+
+  it('Returns selected language', () => {
+    expect(
+      getWoofLanguage([
+        {
+          language: 'he',
+        } as any,
+      ]),
+    ).toEqual('he');
+  });
+
+  it('Returns default when selected language is invalid', () => {
+    expect(
+      getWoofLanguage([
+        {
+          language: 'toString',
+        } as any,
+      ]),
+    ).toEqual('en');
+  });
+});