Added more test phone numbers. (#200)

* Added more test phone numbers.

* proper array length tracking

* added LogDebug message

Author: DellaBitta

auth/integration_test/src/integration_test.cc

@@ -56,8 +56,13 @@ static const int kPhoneAuthCompletionWaitMs = 8000;  // NOLINT
 static const int kPhoneAuthTimeoutMs = 0;            // NOLINT
 
 // Set these in Firebase Console for your app.
-static const char kPhoneAuthTestPhoneNumber[] = "+12345556789";  // NOLINT
-static const char kPhoneAuthTestVerificationCode[] = "123456";   // NOLINT
+static const char* kPhoneAuthTestPhoneNumbers[] = {
+    "+12345556780", "+12345556781", "+12345556782", "+12345556783",
+    "+12345556784", "+12345556785", "+12345556786", "+12345556787",
+    "+12345556788", "+12345556789"};                            // NOLINT
+static const char kPhoneAuthTestVerificationCode[] = "123456";  // NOLINT
+static const int kPhoneAuthTestNumPhoneNumbers =
+    sizeof(kPhoneAuthTestPhoneNumbers) / sizeof(kPhoneAuthTestPhoneNumbers[0]);
 
 static const char kTestPassword[] = "testEmailPassword123";
 static const char kTestEmailBad[] = "[email protected]";
@@ -860,8 +865,12 @@ TEST_F(FirebaseAuthTest, TestPhoneAuth) {
     LogDebug("Creating listener.");
     PhoneListener listener;
     LogDebug("Calling VerifyPhoneNumber.");
-    phone_provider.VerifyPhoneNumber(kPhoneAuthTestPhoneNumber,
-                                     kPhoneAuthTimeoutMs, nullptr, &listener);
+    // Randomly choose one of the phone numbers to avoid collisions.
+    const int random_phone_number =
+        app_framework::GetCurrentTimeInMicroseconds() % kPhoneAuthTestNumPhoneNumbers;
+    phone_provider.VerifyPhoneNumber(
+        kPhoneAuthTestPhoneNumbers[random_phone_number], kPhoneAuthTimeoutMs,
+        nullptr, &listener);
     // Wait for OnCodeSent() callback.
     int wait_ms = 0;
     LogDebug("Waiting for code send.");