Add additional validation, fix extension data sharing tests.

Author: richardjrossiii

Parse/ParseClientConfiguration.m

@@ -44,6 +44,9 @@ - (instancetype)initWithBlock:(void (^)(id<ParseMutableClientConfiguration>))con
 
     configurationBlock(self);
 
+    PFConsistencyAssert(self.applicationId.length, @"`applicationId` should not be nil.");
+    PFConsistencyAssert(self.clientKey.length, @"`clientKey` should not be nil.");
+
     return self;
 }
 

Tests/Unit/ParseClientConfigurationTests.m

@@ -107,8 +107,10 @@ - (void)testCopy {
 - (void)testExtensionDataSharing {
     ParseClientConfiguration *configuration = [ParseClientConfiguration emptyConfiguration];
 
+#if !PF_TARGET_OS_OSX
     // Innaccessible bundle identifiers should throw
     XCTAssertThrows(configuration.applicationGroupIdentifier = @"someBundleIdentifier");
+#endif
 
     // Accessible bundle identifiers should not throw
     _testHelper.swizzledGroupContainerDirectoryPath = YES;