ROT: Erwartungen an SumBusinessLogic.endSum(String)

[demos/kafka/training] / src / test / java / de / juplo / kafka / SumBusinessLogicTest.java

diff --git a/src/test/java/de/juplo/kafka/SumBusinessLogicTest.java b/src/test/java/de/juplo/kafka/SumBusinessLogicTest.java
index ff9fdd0..e65ee83 100644 (file)
--- a/src/test/java/de/juplo/kafka/SumBusinessLogicTest.java
+++ b/src/test/java/de/juplo/kafka/SumBusinessLogicTest.java
@@ -41,4 +41,39 @@ public class SumBusinessLogicTest
     sumBusinessLogic.startSum("foo");
     assertThat(sumBusinessLogic.getSum("foo")).isNotEmpty();
   }
+
+  @Test
+  @DisplayName("A sum can be ended, if it does exist")
+  public void testCanEndIfSumExists()
+  {
+    SumBusinessLogic sumBusinessLogic = new SumBusinessLogic();
+    sumBusinessLogic.startSum("foo");
+    assertThatNoException().isThrownBy(() -> sumBusinessLogic.endSum("foo"));
+  }
+
+  @Test
+  @DisplayName("An existing Sum returns a non-null value, if ended")
+  public void testEndSumReturnsNonNullValueIfSumExists()
+  {
+    SumBusinessLogic sumBusinessLogic = new SumBusinessLogic();
+    sumBusinessLogic.startSum("foo");
+    assertThat(sumBusinessLogic.endSum("foo")).isNotNull();
+  }
+
+  @Test
+  @DisplayName("An existing Sum returns a non-negative value, if ended")
+  public void testEndSumReturnsNonNegativeValueIfSumExists()
+  {
+    SumBusinessLogic sumBusinessLogic = new SumBusinessLogic();
+    sumBusinessLogic.startSum("foo");
+    assertThat(sumBusinessLogic.endSum("foo")).isNotNegative();
+  }
+
+  @Test
+  @DisplayName("Ending a non-existing sum, causes an IllegalStateException")
+  public void testEndSumCausesExceptionIfNotExists()
+  {
+    SumBusinessLogic sumBusinessLogic = new SumBusinessLogic();
+    assertThatIllegalStateException().isThrownBy(() -> sumBusinessLogic.endSum("foo"));
+  }
 }