robolectric/src/main/java/org/robolectric/junit/rules/ExpectedLogMessagesRule.java
public void expectErrorsForTag(String tag) {
    checkTag(tag);
    if (UNPREVENTABLE_TAGS.contains(tag)) {
      throw new AssertionError("Tag `" + tag + "` is already suppressed.");
    }
    expectedTags.add(tag);
  }
public void expectErrorsForTag(String tag) {
    checkTag(tag);
    if (UNPREVENTABLE_TAGS.contains(tag)) {
      throw new AssertionError("Tag `" + tag + "` is already suppressed.");
    }
    expectedTags.add(tag);
  }
public void expectErrorsForTag ( String tag ) { checkTag ( tag ) ; if ( UNPREVENTABLE_TAGS . contains ( tag ) ) { throw new AssertionError ( "Tag `" + tag + "` is already suppressed." ) ; } expectedTags . add ( tag ) ; }
Blanket suppress test failures due to errors from a tag. If this tag is not printed at
Log.ERROR during test execution, the test case will fail (unless {@link
#ignoreMissingLoggedTags()} is used).

<p>Avoid using this method when possible. Prefer to assert on the presence of a specific
message using {@link #expectLogMessage} in test cases that *intentionally* trigger an error.
Blanket suppress test failures due to errors from a tag . If this tag is not printed at Log . ERROR during test execution the test case will fail ( unless { @link #ignoreMissingLoggedTags () } is used ) .