Question

我是java，单元测试和mockito的新手，但我想从我的班级测试一些东西。

我要测试的课程：

abstract class Irc {
    Command received(String data) {
        // parsing

        receivedCommand(prefix, command, parameters, trailing, tags);

        return new Command(prefix, command, parameters, trailing, tags);
    }

    private void receivedCommand(String prefix, String command, String[] parameters, String trailing, Map<String, String> tags) {
        String nick = getNickFromPrefix(prefix);

        parsed(prefix, command, parameters, trailing);

        if (command.equals("MODE")) {
            if (parameters.length == 3) {
                String chan = parameters[0];
                String mode = parameters[1];
                String name = parameters[2];

                if (mode.length() == 2) {
                    String modeChar = mode.substring(1, 2);
                    if (mode.startsWith("+")) {
                        onModeChange(chan, name, true, modeChar, prefix);
                    } else if (mode.startsWith("-")) {
                        onModeChange(chan, name, false, modeChar, prefix);
                    }
                }
            }

            return;
        }
    }

    void onModeChange(String channel, String nick, boolean modeAdded, String mode, String prefix) {
    }
}

修改我想确保在onModeChange被调用后调用received。

到目前为止我所拥有的：

@Test
public void modeChangeReceivedRightSyntax() {
    try {
        irc = new Irc("Test") {
            @Override
            public void debug(String line) {
                System.err.println(line);
            }

            @Override
            void onModeChange(String channel, String nick, boolean modeAdded, String mode, String prefix) {
                System.out.println("Mode Change: " + channel + " " + nick + " " + mode + " " + prefix + " " + modeAdded);
            }
        };

        ircMock = spy(irc);

        when(
                ircMock.received(":jtv MODE #channel +o user")
        ).thenReturn(
                new Command("jtv", "MODE", new String[]{"#channel", "+o", "user"}, "", null)
        );

        verify(ircMock).onModeChange("#channel", "user", true, "o", "jtv");
    } catch (Exception ex) {
        fail("Exception: " + ex.toString());
    }
}

when正在运行，但verify失败且Actually, there were zero interactions with this mock.

Answer 1

您的代码未调用任何业务方法。它只会模拟接收到的方法应该如何表现，但实际上并没有调用该方法。由于您的Irc类是抽象的，因此您使用间谍的方法很好，但您不应该模拟接收的方法，而是告诉间谍委派给真正的方法。然后你可以验证是否调用了onModeChange。

Irc irc = spy(Irc.class, withSettings().defaultAnswer(CALLS_REAL_METHODS));

// Business method
irc.received(":jtv MODE #channel +o user");

// Asserts
verify(irc).onModeChange("#channel", "user", true, "o", "jtv");

Mockito测试覆盖的void方法

1 个答案: