从测试用例中调用不在OCUnit中工作的方法

Question

我正在测试这种方法：

-(IBAction)addTask{
   if(!([mPriority.text isEqualToString:@"1"] ||[mPriority.text isEqualToString:@"2"] ||[mPriority.text isEqualToString:@"3"] ||[mPriority.text isEqualToString:@"4"] ||[mPriority.text isEqualToString:@"5"]))
    {
        NSLog(@"Enter valid Priority value");
    }
    else if ([mTaskName.text isEqualToString:@""]) {
            NSLog(@"Task name can't be blank");
        }
        else{
    sqlite3_stmt    *statement;
    const char *dbPath = [mDatabasePath UTF8String];
    //[[appViewController returnObject].mDatabasePath UTF8String];

    if (sqlite3_open(dbPath, &mDiary) == SQLITE_OK)
    {
        NSLog(@"%@",mPriority.text);

        NSString *insertSQL2=[NSString stringWithFormat:@"INSERT INTO TODO VALUES(\"%@\",\"%@\",\"%@\",\"%@\",\"%@\")",mStartDate.text,mEndDate.text,mTaskName.text,mTaskDescription.text,mPriority.text];

        const char *insert_stmt2 = [insertSQL2 UTF8String];
        sqlite3_prepare_v2(mDiary, insert_stmt2,
                           -1, &statement, NULL);
        NSLog(@"%@",mPriority.text);
        if (sqlite3_step(statement) == SQLITE_DONE )
        { 
            mStartDate.text=@"";
            mEndDate.text=@"";
            mTaskName.text=@"";
            mTaskDescription.text=@"";
            mPriority.text=@"";
        }
        else {

            NSLog(@"failed to add");
        }
        sqlite3_finalize(statement);
        sqlite3_close(mDiary);
        }
    }


}

这是我写的测试方法：

-(void)testAddTask
{
    testString = [[NSMutableString alloc]init];
    AddTaskViewController *obj;
    obj = [[AddTaskViewController alloc]init];
    obj.mTaskName.text = @"t1";
    obj.mTaskDescription.text = @"t2";
    obj.mStartDate.text = @"56987";
    obj.mEndDate.text = @"55425";
    obj.mPriority.text = @"5";

    [obj addTask];
    sqlite3_stmt *statement;
    const char *dbpath = [obj.mDatabasePath UTF8String];
    if (sqlite3_open(dbpath,&mDiaryTest)== SQLITE_OK) {
        NSString *selectSQL = [NSString stringWithFormat:@"SELECT * FROM TODO"];
        const char *query_stmt = [selectSQL UTF8String];
        if(sqlite3_prepare_v2(mDiaryTest,
                               query_stmt, -1, &statement, NULL) == SQLITE_OK)
        {
            while(sqlite3_step(statement) == SQLITE_ROW)
            {
                testString = [[NSMutableString alloc]initWithUTF8String:(const char *) sqlite3_column_text(statement, 2)];
                if([testString isEqualToString:obj.mTaskName.text])
                {
                    break;
                }
                NSLog(@"%@",testString);
            }
        }
    }
    sqlite3_finalize(statement);
    sqlite3_close(mDiaryTest);
    NSLog(@"%@",testString);
   STAssertEquals(testString,obj.mTaskDescription.text,@"should be equal");
 //   STAssertNotNil(testString,@"Not nil");
}

addTask方法应该在我的数据库中添加一个任务。为了测试这个方法，我创建了一个AddTaskViewController的对象，addTask所在的对象，并传递了一些虚拟值。但是，当我从测试用例中调用addContact方法时，这些值无法识别。因此，它无法在数据库中插入值。我该如何解决这个问题？请帮忙