'assertEquals()' called on array

Reports JUnit assertEquals() calls with arguments of an array type. Such methods compare the arrays' identities instead of the arrays' contents. Array contents should be checked with the assertArrayEquals() method.

Example:

  @Test
  public void testSort() {
    int[] actual = {248, 496, 0, 56};
    Arrays.sort(actual);
    Assert.assertEquals(new int[] {0, 56, 248, 496}, actual);
  }

After the quick-fix is applied:

  @Test
  public void testSort() {
    int[] actual = {248, 496, 0, 56};
    Arrays.sort(actual);
    Assert.assertArrayEquals(new int[] {0, 56, 248, 496}, actual);
  }

Locating this inspection

By ID

Can be used to locate inspection in e.g. Qodana configuration files, where you can quickly enable or disable it, or adjust its settings.

AssertEqualsCalledOnArray

Via Settings dialog

Path to the inspection settings via IntelliJ Platform IDE Settings dialog, when you need to adjust inspection settings directly from your IDE.

Settings or Preferences | Editor | Inspections | JUnit

Inspection Details
By default bundled with:	IntelliJ IDEA 2024.3, Qodana for JVM 2024.3,
Can be installed with plugin:	JUnit, 243.23126

Last modified: 03 December 2024