X-Git-Url: https://juplo.de/gitweb/?a=blobdiff_plain;f=src%2Ftest%2Fjava%2Fde%2Fjuplo%2Fkafka%2FAdderBusinessLogicTest.java;h=8ae172876879bbeb3ace54abc01b9dec39848143;hb=f4848341ef2fee62e3c62c63deed277a4f1a2d8a;hp=17fadb1033216150131c5ed3e4392bb8e0c1d816;hpb=0aa4a1863bf9ee5d345c652f47f350f82d73e4aa;p=demos%2Fkafka%2Ftraining

diff --git a/src/test/java/de/juplo/kafka/AdderBusinessLogicTest.java b/src/test/java/de/juplo/kafka/AdderBusinessLogicTest.java
index 17fadb1..8ae1728 100644
--- a/src/test/java/de/juplo/kafka/AdderBusinessLogicTest.java
+++ b/src/test/java/de/juplo/kafka/AdderBusinessLogicTest.java
@@ -24,4 +24,56 @@ public class AdderBusinessLogicTest
     adder.startSum("foo");
     assertThatIllegalStateException().isThrownBy(() -> adder.startSum("foo"));
   }
+
+  @Test
+  @DisplayName("An empty Optional should be returned, for a non-existing sum")
+  public void testEmptyOptionalForNonExistingSum()
+  {
+    AdderBusinessLogic adder = new AdderBusinessLogic();
+    assertThat(adder.getSum("foo")).isEmpty();
+  }
+
+  @Test
+  @DisplayName("A non-empty Optional should be returned, for an existing sum")
+  public void testNonEmptyOptionalForExistingSum()
+  {
+    AdderBusinessLogic adder = new AdderBusinessLogic();
+    adder.startSum("foo");
+    assertThat(adder.getSum("foo")).isNotEmpty();
+  }
+
+  @Test
+  @DisplayName("A sum can be ended, if it does exist")
+  public void testCanEndIfSumExists()
+  {
+    AdderBusinessLogic adder = new AdderBusinessLogic();
+    adder.startSum("foo");
+    assertThatNoException().isThrownBy(() -> adder.endSum("foo"));
+  }
+
+  @Test
+  @DisplayName("An existing Sum returns a non-null value, if ended")
+  public void testEndSumReturnsNonNullValueIfSumExists()
+  {
+    AdderBusinessLogic adder = new AdderBusinessLogic();
+    adder.startSum("foo");
+    assertThat(adder.endSum("foo")).isNotNull();
+  }
+
+  @Test
+  @DisplayName("An existing Sum returns a non-negative value, if ended")
+  public void testEndSumReturnsNonNegativeValueIfSumExists()
+  {
+    AdderBusinessLogic adder = new AdderBusinessLogic();
+    adder.startSum("foo");
+    assertThat(adder.endSum("foo")).isNotNegative();
+  }
+
+  @Test
+  @DisplayName("Ending a non-existing sum, causes an IllegalStateException")
+  public void testEndSumCausesExceptionIfNotExists()
+  {
+    AdderBusinessLogic adder = new AdderBusinessLogic();
+    assertThatIllegalStateException().isThrownBy(() -> adder.endSum("foo"));
+  }
 }