AssertJ cannot compare arrays in maps

[asolntsev]

Describe the bug
A clear and concise description of what the bug is.

• assertj core version: 3.25.0
• java version: 17
• test framework version: JUnit 5.10.1
• os (if relevant): MacOS Sonoma 14.2.1

Test case reproducing the bug

This code worked in AssertJ 3.24.2, but fails in AssertJ 3.25.0:

import static org.assertj.core.api.Assertions.assertThat;
import org.junit.jupiter.api.Test;
import java.util.Map;

  @Test
  void fails() {
    assertThat(Map.of("firstName", new String[] {"Bob"}))
      .containsExactlyEntriesOf(Map.of("firstName", new String[] {"Bob"}));
  }

This test fails with the error message:

    java.lang.AssertionError: 
    Actual and expected have the same elements but not in the same order, at index 0 actual element was:
      "firstName"=["Bob"]
    whereas expected element was:
      "firstName"=["Bob"]
        at play.utils.UtilsTest.fails(UtilsTest.java:50)

[scordio]

Thanks for reporting it, @asolntsev!

[scordio]

The change that causes the issue is 498ee5b.

[scordio]

Here we assume that the map value can be compared with equals:

assertj/assertj-core/src/main/java/org/assertj/core/internal/Maps.java

Line 572 in 25347d5

if (!actual.containsKey(entries[0].getKey()) || !actual.containsValue(entries[0].getValue())) {

This cannot work with array values as equals compares identity and not the array's content.

[scordio]

Team decision: 498ee5b should be reverted and #2165 should be addressed again with the knowledge gathered from this issue.