improve description of switch mutations

README.md

@@ -8,6 +8,10 @@ Read all about it at http://pitest.org
 
 ## Releases
 
+### 1.7.1 (unreleased)
+
+* #932 Improve switch mutation descriptions
+
 ### 1.7.0
 
 * #923 Internal interface changes

pitest/src/main/java/org/pitest/mutationtest/engine/gregor/mutators/experimental/SwitchMutator.java

@@ -91,7 +91,7 @@ private Label firstDifferentLabel(final Label[] labels, final Label label) {
 
     private boolean shouldMutate() {
       final MutationIdentifier mutationId = this.context.registerMutation(
-          SwitchMutator.this, "Switch mutation");
+              SwitchMutator.this, "Changed switch default to be first case");
       return this.context.shouldMutate(mutationId);
     }
 

pitest/src/test/java/org/pitest/mutationtest/engine/gregor/mutators/experimental/SwitchMutatorTest.java

@@ -15,6 +15,7 @@
  */
 package org.pitest.mutationtest.engine.gregor.mutators.experimental;
 
+import static org.assertj.core.api.AssertionsForClassTypes.assertThat;
 import static org.junit.Assert.assertEquals;
 
 import java.util.concurrent.Callable;
@@ -55,6 +56,13 @@ public Integer call() throws Exception {
     }
   }
 
+  @Test
+  public void createsMeaningfulDescription() {
+    final Mutant mutant = getFirstMutant(HasIntSwitchWithDefault.class);
+    assertThat(mutant.getDetails().getDescription()).isEqualTo("Changed switch default to be first case");
+  }
+
+
   @Test
   public void shouldSwapFirstCaseWithDefaultForInt() throws Exception {
     final Mutant mutant = getFirstMutant(HasIntSwitchWithDefault.class);