[tests][functions] httpsCallable tests

bridge/e2e/functions/functions.e2e.js

@@ -1,14 +1,78 @@
 const TEST_DATA = TestHelpers.functions.data;
 
-// TODO tests...
-describe.only('functions()', () => {
-  it('runs', async () => {
-    const type = 'simpleArray';
-    const response = await firebase.functions().httpsCallable('runTest')({
+describe('functions()', () => {
+  describe('httpsCallable(fnName)(args)', () => {
+    it('accepts primitive args: undefined', async () => {
+      const functionRunner = firebase.functions().httpsCallable('runTest');
+      const response = await functionRunner();
+      response.data.should.equal('null');
+    });
+
+    it('accepts primitive args: string', async () => {
+      const functionRunner = firebase.functions().httpsCallable('runTest');
+      const response = await functionRunner('hello');
+      response.data.should.equal('string');
+    });
+
+    it('accepts primitive args: number', async () => {
+      const functionRunner = firebase.functions().httpsCallable('runTest');
+      const response = await functionRunner(123);
+      response.data.should.equal('number');
+    });
+
+    it('accepts primitive args: boolean', async () => {
+      const functionRunner = firebase.functions().httpsCallable('runTest');
+      const response = await functionRunner(true);
+      response.data.should.equal('boolean');
+    });
+
+    it('accepts primitive args: null', async () => {
+      const functionRunner = firebase.functions().httpsCallable('runTest');
+      const response = await functionRunner(null);
+      response.data.should.equal('null');
+    });
+
+    it('accepts array args', async () => {
+      const functionRunner = firebase.functions().httpsCallable('runTest');
+      const response = await functionRunner([1, 2, 3, 4]);
+      response.data.should.equal('array');
+    });
+
+    it('accepts object args', async () => {
+      const type = 'simpleObject';
+      const inputData = TEST_DATA[type];
+      const functionRunner = firebase.functions().httpsCallable('runTest');
+      const { data: outputData } = await functionRunner({
         type,
-      inputData: TEST_DATA[type],
-      asError: true,
+        inputData,
       });
-    console.log('RESPONSE: ', response, typeof response);
+      should.deepEqual(outputData, inputData);
+    });
+
+    it('accepts complex nested objects', async () => {
+      const type = 'advancedObject';
+      const inputData = TEST_DATA[type];
+      const functionRunner = firebase.functions().httpsCallable('runTest');
+      const { data: outputData } = await functionRunner({
+        type,
+        inputData,
+      });
+      should.deepEqual(outputData, inputData);
+    });
+
+    it('accepts complex nested arrays', async () => {
+      const type = 'advancedArray';
+      const inputData = TEST_DATA[type];
+      const functionRunner = firebase.functions().httpsCallable('runTest');
+      const { data: outputData } = await functionRunner({
+        type,
+        inputData,
+      });
+      should.deepEqual(outputData, inputData);
+    });
+  });
+
+  describe('HttpsError', () => {
+    // todo
   });
 });