使用 Mockito，如何在 when 子句中检查映射的键值对

Question

指： SimilarQuestion1， SimilarQuestion2， SimilarQuestion3

从参考文献中，我能够推导出如下部分解决方案，尽管它在语法上不正确。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，您可以将eq与提供的填充地图一起使用：

    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返回的是 Map 而不是匹配器。因此，请将您的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，以便它编译。