iphone – OCUnit中无法识别的导入文件

“_OBJC_CLASS _ $_ UserAccount”,引自：

然后它说“未找到符号”.这让我感到某种链接器错误,但我不知道发生了什么.我已多次建造和清理所有目标,但无济于事.这是我的测试@L_262_4@：

#import "SomeTESTCase.h"
#import "UserAccount.h"

@implementation SomeTESTCase

 - (void)testuserAccount
 {
 // UserAccount.m //

 UserAccount *testAccount = [[UserAccount alloc] initWithUsername:@"" password:@"" deviCEToken:@""];
 [testAccount registerNew];
 NSLog(@"USERID = %@",testAccount.userID);
 STAssertEquals([testAccount login],NO,@"Failure: Login should fail with blank username and password."); // should fail with no username or password

 UserAccount *testAccount2 = [[UserAccount alloc] initWithUsername:@"user" password:@"" deviCEToken:@""]; 
 STAssertEquals([testAccount2 login],@"Failure: Login should fail with blank password.");// should fail with no password

 UserAccount *testAccount3 = [[UserAccount alloc] initWithUsername:@"" password:@"pass" deviCEToken:@""]; 
 STAssertEquals([testAccount3 login],@"Failure: Login should fail with blank username.");// should fail with no password

 }

@end

任何建议将不胜感激.
谢谢！

-Matt