fix duplicate class implementations in database tests

Author: morganchen12

.travis.yml

@@ -6,6 +6,7 @@ xcode_scheme: FirebaseUI
 rvm: 2.3.1
 before_install:
   - gem install cocoapods -v '1.0.1'
+  - pod install --repo-update
 
 script: xcodebuild -workspace FirebaseUI.xcworkspace
   -scheme FirebaseUI

FirebaseAuthUITests/FIRAuthUITest.m

@@ -19,6 +19,11 @@
 @import FirebaseAuth;
 @import FirebaseAuthUI;
 
+// A hack to fix travis failing to pick up FIROptions interface
+@interface FIROptions (TravisCIHack)
+- (instancetype)initWithContentsOfFile:(NSString *)file;
+@end
+
 @interface FUILoginProvider : NSObject <FIRAuthProviderUI>
 @property (nonatomic, assign) BOOL canHandleURLs;
 @end

FirebaseDatabaseUI/FirebaseArray.h

@@ -18,7 +18,7 @@
 
 // clang-format on
 
-@import Firebase;
+@import FirebaseDatabase;
 
 #import "FirebaseArrayDelegate.h"