X-Git-Url: https://juplo.de/gitweb/?a=blobdiff_plain;f=src%2Ftest%2Fjava%2Fde%2Fjuplo%2Fkafka%2Fwordcount%2Ftop10%2FRankingTest.java;h=26749e9440783822e03181b9709fdd0517cc4a27;hb=0ba8ce7bc6200db8ad2abe3aa611e6a66dd7ea44;hp=e92d87cc5d835b76404bb2357057450d6cfbd4f8;hpb=25afa5a7e6a4f42d18d65ee982faa146f9d03375;p=demos%2Fkafka%2Fwordcount

diff --git a/src/test/java/de/juplo/kafka/wordcount/top10/RankingTest.java b/src/test/java/de/juplo/kafka/wordcount/top10/RankingTest.java
index e92d87c..26749e9 100644
--- a/src/test/java/de/juplo/kafka/wordcount/top10/RankingTest.java
+++ b/src/test/java/de/juplo/kafka/wordcount/top10/RankingTest.java
@@ -137,6 +137,52 @@ public class RankingTest
           .isThrownBy(() -> ranking.add(Entry.of(entry.getWord(), entry.getCounter() - 1))));
   }
 
+  @DisplayName("Identical rankings are considered equal")
+  @ParameterizedTest
+  @MethodSource("validRankingsProvider")
+  public void testIdenticalRankingsAreConsideredEaqual(List<Entry> entryList)
+  {
+    assertThat(Ranking.of(toArray(entryList))).isEqualTo(Ranking.of(toArray(entryList)));
+  }
+
+  @DisplayName("Two empty rankings are considered equal")
+  @Test
+  public void testTwoEmptyRankingsAreConsideredEaqual()
+  {
+    assertThat(Ranking.of()).isEqualTo(Ranking.of());
+  }
+
+  @DisplayName("A changed ranking is not considered equal to its unchanged counter-part")
+  @ParameterizedTest
+  @MethodSource("validRankingsProvider")
+  public void testChangedRankingsDoNotEaqualUnchangedOne(List<Entry> entryList)
+  {
+    Ranking changed = Ranking.of(toArray(entryList));
+    changed.add(Entry.of("devilish", 666l));
+    assertThat(changed).isNotEqualTo(Ranking.of(toArray(entryList)));
+  }
+
+  @DisplayName("Rankigs are considered equal, if only the order of words with the same count differ")
+  @Test
+  public void testRankingWithDifferentOrderForSameCountAreEqual()
+  {
+    assertThat(
+        Ranking.of(
+            Entry.of("a1",10l),
+            Entry.of("a2",10l),
+            Entry.of("b1", 9l),
+            Entry.of("b2",9l),
+            Entry.of("c1", 8l),
+            Entry.of("c2", 8l)))
+        .isEqualTo(Ranking.of(
+            Entry.of("a2",10l),
+            Entry.of("a1",10l),
+            Entry.of("b2", 9l),
+            Entry.of("b1",9l),
+            Entry.of("c2", 8l),
+            Entry.of("c1", 8l)));
+  }
+
 
   Entry[] toArray(List<Entry> entryList)
   {