单元测试测试驱动开发,Java,遇到断言错误
我得到了一个测试套件,用于测试驱动的开发任务。这个程序玩一个石头、布、剪刀的游戏,我还得到了一个实际程序的骨架代码。我不应该更改测试套件,而是必须更改,或者在实际程序中生成代码,以便测试通过。我在通过getInput方法时遇到问题。 这是实际程序的代码:
public static char getInput(String prompt, char[] options, Scanner sc) {
// getInput method
// prompts user for an input that matches one of the given characters
// if its not one of those, repeat. (use contains (above))
char c;
boolean flag = false;
do {
c = sc.next().charAt(0);
if (contains(c, options)) {
System.out.println(prompt + " ( y, n, q ):");
flag = true;
}
}
while (!flag);
return c;
}
这是测试套件中测试getInput方法的方法:`
private static void testGetInput() {
OutputStream out;
out = resetSystemOut();
assert 'y' == RPS.getInput("Choose", new char[] {'y','n','q'}, new Scanner("y\n"));
assertOutput("Choose ( y, n, q ):\n", out);
out = resetSystemOut();
assert 'n' == RPS.getInput("Alice", new char[] {'y','n','q'}, new Scanner("n\n"));
assertOutput("Alice ( y, n, q ):\n", out);
out = resetSystemOut();
assert 'q' == RPS.getInput("Bob", new char[] {'y','n','q'}, new Scanner("q\n"));
assertOutput("Bob ( y, n, q ):\n", out);
out = resetSystemOut();
assert 'q' == RPS.getInput("Cloe", new char[] {'y','n','q'}, new Scanner("x\nw\nq\n")); //line 81
assertOutput("Cloe ( y, n, q ):\n" +
"Cloe ( y, n, q ):\n" +
"Cloe ( y, n, q ):\n", out);
out = resetSystemOut();
assert 'v' == RPS.getInput("Doug", new char[] {'v'}, new Scanner("vvvv\nv\n"));
assertOutput("Doug ( v ):\n" +
"Doug ( v ):\n", out);
}
这是我得到的错误:
Exception in thread "main" java.lang.AssertionError: 54 18
Cloe ( y, n, q ):
Cloe ( y, n, q ):
Cloe ( y, n, q ):
Cloe ( y, n, q ):
at RPSTester.assertOutput(RPSTester.java:226)
at RPSTester.testGetInput(RPSTester.java:81)
at RPSTester.main(RPSTester.java:25) //line 25 has a call to the testGetInput method
我曾在办公时间拜访过讲师,但在给出问题的全部答案之前,他只能告诉我这么多。我将感谢任何帮助,提示,指点我的错误;任何事都值得感激
# 1 楼答案
您需要通过连接提示和选项中的字符来生成打印语句,然后打印该语句的次数与扫描仪输入中的字符数量相同。您可能需要调整新行字符的追加以匹配测试断言
这将有助于:
# 2 楼答案
你应该这样做