使用 Mockito，如何在 when 子句中检查映射的键值对

Question

参考：SimilarQuestion1, SimilarQuestion2, SimilarQuestion3

从参考资料中，我能够得出如下的部分解决方案，尽管它在语法上是不正确的。我如何修改它以正确搜索具有空值的某些键。

when(storedProc.execute(anyMapOf(String.class, Object.class).allOf(hasEntry("firstIdentifier", null), hasEntry("secondIdentifier", null))))
   .thenThrow(new Exception(EXCEPTION_NO_IDENTIFIER));

任何帮助将不胜感激。

Answer 1

在您的情况下，您可以使用 eq 和提供的填充地图：

    when(storedProc.execute(Mockito.eq(givenIncorrectMap)))
            .thenThrow(new Exception(EXCEPTION_NO_IDENTIFIER));

完整示例：

import java.util.Collections;
import java.util.HashMap;
import java.util.Map;

import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import org.mockito.Mockito;

import static org.mockito.Mockito.when;

public class QuestionTest {
    @Rule
    public ExpectedException exception = ExpectedException.none();

    interface A {
        String execute(Map<String, Object> map);
    }

    @Test
    public void test() {
        // Given a map with missed identifiers.
        final Map<String, Object> givenIncorrectMap = new HashMap<>();
        givenIncorrectMap.put("firstIdentifier", null);
        givenIncorrectMap.put("secondIdentifier", null);

        // Given a mocked service
        final A mockedA = Mockito.mock(A.class);

        // which throws an exception exactly for the given map.
        when(mockedA.execute(Mockito.eq(givenIncorrectMap)))
                .thenThrow(new IllegalArgumentException("1"));


        // Now 2 test cases to compare behaviour:


        // When execute with correct map no exception is expected
        mockedA.execute(Collections.singletonMap("firstIdentifier", "any correct value"));

        // When execute with incorrect map the IllegalArgumentException is expected
        exception.expect(IllegalArgumentException.class);
        exception.expectMessage("1");

        mockedA.execute(givenIncorrectMap);
    }
}

Answer 2

问题是 anyMap returns 一个 Map 而不是 Matcher。因此，将您的 anyMap(...)... 替换为：

Mockito.argThat(CoreMatchers.allOf(
  hasEntry("firstIdentifier", null), 
  hasEntry("secondIdentifier", null)))

也许你必须添加一些类型变量提示，这样它才能编译。

使用 Mockito，如何在 when 子句中检查映射的键值对

Using Mockito, how do I check for a key-value pair of a map within when clause

java

junit

hamcrest

mockito