Merge pull request #1418 from hcoles/bug/duplicate_build_messages

filter build messages with the same content

Author: hcoles

pitest-entry/src/main/java/org/pitest/mutationtest/verify/CompoundBuildVerifierFactory.java

@@ -16,6 +16,7 @@ public BuildVerifier create(BuildVerifierArguments args) {
         List<BuildMessage> issues = verifiers.stream()
                 .map(f -> f.create(args))
                 .flatMap(v -> v.verifyBuild().stream())
+                .distinct()
                 .collect(Collectors.toList());
 
         return new BuildVerifier() {

pitest-entry/src/test/java/org/pitest/mutationtest/verify/CompoundBuildVerifierFactoryTest.java

@@ -25,6 +25,15 @@ public void returnsResultsFromChildren() {
         assertThat(underTest.create(new BuildVerifierArguments(aCodeSource(), new ReportOptions())).verifyBuild())
                 .containsExactly(buildMessage("one"), buildMessage("two"), buildMessage("three"));
     }
+    @Test
+    public void removesDuplicateMessage() {
+        CompoundBuildVerifierFactory underTest = new CompoundBuildVerifierFactory(asList(
+                factoryFor(buildVerifier(asList("one", "one"))),
+                factoryFor(buildVerifier(asList("two", "two")))));
+
+        assertThat(underTest.create(new BuildVerifierArguments(aCodeSource(), new ReportOptions())).verifyBuild())
+                .containsExactly(buildMessage("one"), buildMessage("two"));
+    }
 
     private BuildVerifierFactory factoryFor(BuildVerifier bv) {
         BuildVerifierFactory vs = Mockito.mock(BuildVerifierFactory.class);