Doppelten Code in `BackOffStateTest` in Methoden ausgelagert

diff --git a/src/test/java/de/juplo/kafka/BackOffStateTest.java b/src/test/java/de/juplo/kafka/BackOffStateTest.java
index 1f75c85..5ee4e2b 100644 (file)
--- a/src/test/java/de/juplo/kafka/BackOffStateTest.java
+++ b/src/test/java/de/juplo/kafka/BackOffStateTest.java
@@ -26,12 +26,17 @@ class BackOffStateTest
   final static Instant NOW = Instant.now();
 
 
+  private BackOffState NotStartedBackOffState()
+  {
+    return new BackOffState();
+  }
+
   @Test
   @DisplayName("A not started BackOffState is not waiting for a retry")
   void NotStartedBackOffStateIsNotWaitingForRetry()
   {
     // GIVEN
-    BackOffState backOffState = new BackOffState();
+    BackOffState backOffState = NotStartedBackOffState();
 
     // WHEN
 
@@ -44,7 +49,7 @@ class BackOffStateTest
   void NotStartedBackOffStateIsNotStarted()
   {
     // GIVEN
-    BackOffState backOffState = new BackOffState();
+    BackOffState backOffState = NotStartedBackOffState();
 
     // WHEN
 
@@ -57,7 +62,7 @@ class BackOffStateTest
   void NotStartedBackOffStateIsNotCompleted()
   {
     // GIVEN
-    BackOffState backOffState = new BackOffState();
+    BackOffState backOffState = NotStartedBackOffState();
 
     // WHEN
 
@@ -65,6 +70,19 @@ class BackOffStateTest
     assertThat(backOffState.isCompleted()).isFalse();
   }
 
+
+  private BackOffState StartedBackoffStateWithNoRetries(
+    Clock clock,
+    BackOff backOff,
+    BackOffExecution backOffExecution)
+  {
+    given(clock.instant()).willReturn(NOW);
+    given(backOff.start()).willReturn(backOffExecution);
+    given(backOffExecution.nextBackOff()).willReturn(BackOffExecution.STOP);
+
+    return new BackOffState(ID, backOff, clock, TOPIC_PARTITION, OFFSET);
+  }
+
   @Test
   @DisplayName("A started BackOffState with no retries is not waiting for a retry")
   void StartedBackOffStateWithNoRetriesIsNotWaitingForRetry(
@@ -73,12 +91,9 @@ class BackOffStateTest
     @Mock BackOffExecution backOffExecution)
   {
     // GIVEN
-    given(clock.instant()).willReturn(NOW);
-    given(backOff.start()).willReturn(backOffExecution);
-    given(backOffExecution.nextBackOff()).willReturn(BackOffExecution.STOP);
+    BackOffState backOffState = StartedBackoffStateWithNoRetries(clock, backOff, backOffExecution);
 
     // WHEN
-    BackOffState backOffState = new BackOffState(ID, backOff, clock, TOPIC_PARTITION, OFFSET);
 
     // THEN
     assertThat(backOffState.isWaitingForNextRetry()).isFalse();
@@ -92,12 +107,9 @@ class BackOffStateTest
     @Mock BackOffExecution backOffExecution)
   {
     // GIVEN
-    given(clock.instant()).willReturn(NOW);
-    given(backOff.start()).willReturn(backOffExecution);
-    given(backOffExecution.nextBackOff()).willReturn(BackOffExecution.STOP);
+    BackOffState backOffState = StartedBackoffStateWithNoRetries(clock, backOff, backOffExecution);
 
     // WHEN
-    BackOffState backOffState = new BackOffState(ID, backOff, clock, TOPIC_PARTITION, OFFSET);
 
     // THEN
     assertThat(backOffState.isStarted(OFFSET)).isTrue();
@@ -111,17 +123,27 @@ class BackOffStateTest
     @Mock BackOffExecution backOffExecution)
   {
     // GIVEN
-    given(clock.instant()).willReturn(NOW);
-    given(backOff.start()).willReturn(backOffExecution);
-    given(backOffExecution.nextBackOff()).willReturn(BackOffExecution.STOP);
+    BackOffState backOffState = StartedBackoffStateWithNoRetries(clock, backOff, backOffExecution);
 
     // WHEN
-    BackOffState backOffState = new BackOffState(ID, backOff, clock, TOPIC_PARTITION, OFFSET);
 
     // THEN
     assertThat(backOffState.isCompleted()).isTrue();
   }
 
+
+  private BackOffState StartedBackoffStateWithRetries(
+    Clock clock,
+    BackOff backOff,
+    BackOffExecution backOffExecution)
+  {
+    given(clock.instant()).willReturn(NOW);
+    given(backOff.start()).willReturn(backOffExecution);
+    given(backOffExecution.nextBackOff()).willReturn(1000l);
+
+    return new BackOffState(ID, backOff, clock, TOPIC_PARTITION, OFFSET);
+  }
+
   @Test
   @DisplayName("A started BackOffState is waiting for a retry if the time is not due")
   void StartedBackOffStateIsWaitingForRetryIfTimeIsNotDue(
@@ -130,12 +152,7 @@ class BackOffStateTest
     @Mock BackOffExecution backOffExecution)
   {
     // GIVEN
-    given(clock.instant()).willReturn(NOW);
-    given(backOff.start()).willReturn(backOffExecution);
-    given(backOffExecution.nextBackOff()).willReturn(1000l);
-
-    BackOffState backOffState = new BackOffState(ID, backOff, clock, TOPIC_PARTITION, OFFSET);
-
+    BackOffState backOffState = StartedBackoffStateWithRetries(clock, backOff, backOffExecution);
     given(clock.instant()).willReturn(NOW.plusMillis(1000));
 
     // WHEN
@@ -153,12 +170,7 @@ class BackOffStateTest
     @Mock BackOffExecution backOffExecution)
   {
     // GIVEN
-    given(clock.instant()).willReturn(NOW);
-    given(backOff.start()).willReturn(backOffExecution);
-    given(backOffExecution.nextBackOff()).willReturn(1000l);
-
-    BackOffState backOffState = new BackOffState(ID, backOff, clock, TOPIC_PARTITION, OFFSET);
-
+    BackOffState backOffState = StartedBackoffStateWithRetries(clock, backOff, backOffExecution);
     given(clock.instant()).willReturn(NOW.plusMillis(1000));
 
     // WHEN
@@ -176,12 +188,7 @@ class BackOffStateTest
     @Mock BackOffExecution backOffExecution)
   {
     // GIVEN
-    given(clock.instant()).willReturn(NOW);
-    given(backOff.start()).willReturn(backOffExecution);
-    given(backOffExecution.nextBackOff()).willReturn(1000l);
-
-    BackOffState backOffState = new BackOffState(ID, backOff, clock, TOPIC_PARTITION, OFFSET);
-
+    BackOffState backOffState = StartedBackoffStateWithRetries(clock, backOff, backOffExecution);
     given(clock.instant()).willReturn(NOW.plusMillis(1000));
 
     // WHEN
@@ -199,12 +206,7 @@ class BackOffStateTest
     @Mock BackOffExecution backOffExecution)
   {
     // GIVEN
-    given(clock.instant()).willReturn(NOW);
-    given(backOff.start()).willReturn(backOffExecution);
-    given(backOffExecution.nextBackOff()).willReturn(1000l);
-
-    BackOffState backOffState = new BackOffState(ID, backOff, clock, TOPIC_PARTITION, OFFSET);
-
+    BackOffState backOffState = StartedBackoffStateWithRetries(clock, backOff, backOffExecution);
     given(clock.instant()).willReturn(NOW.plusMillis(1000));
 
     // WHEN
@@ -222,12 +224,7 @@ class BackOffStateTest
     @Mock BackOffExecution backOffExecution)
   {
     // GIVEN
-    given(clock.instant()).willReturn(NOW);
-    given(backOff.start()).willReturn(backOffExecution);
-    given(backOffExecution.nextBackOff()).willReturn(1000l);
-
-    BackOffState backOffState = new BackOffState(ID, backOff, clock, TOPIC_PARTITION, OFFSET);
-
+    BackOffState backOffState = StartedBackoffStateWithRetries(clock, backOff, backOffExecution);
     given(clock.instant()).willReturn(NOW.plusMillis(1001));
     given(backOffExecution.nextBackOff()).willReturn(1000l);
 
@@ -246,12 +243,7 @@ class BackOffStateTest
     @Mock BackOffExecution backOffExecution)
   {
     // GIVEN
-    given(clock.instant()).willReturn(NOW);
-    given(backOff.start()).willReturn(backOffExecution);
-    given(backOffExecution.nextBackOff()).willReturn(1000l);
-
-    BackOffState backOffState = new BackOffState(ID, backOff, clock, TOPIC_PARTITION, OFFSET);
-
+    BackOffState backOffState = StartedBackoffStateWithRetries(clock, backOff, backOffExecution);
     given(clock.instant()).willReturn(NOW.plusMillis(1001));
     given(backOffExecution.nextBackOff()).willReturn(1000l);
 
@@ -270,12 +262,7 @@ class BackOffStateTest
     @Mock BackOffExecution backOffExecution)
   {
     // GIVEN
-    given(clock.instant()).willReturn(NOW);
-    given(backOff.start()).willReturn(backOffExecution);
-    given(backOffExecution.nextBackOff()).willReturn(1000l);
-
-    BackOffState backOffState = new BackOffState(ID, backOff, clock, TOPIC_PARTITION, OFFSET);
-
+    BackOffState backOffState = StartedBackoffStateWithRetries(clock, backOff, backOffExecution);
     given(clock.instant()).willReturn(NOW.plusMillis(1001));
     given(backOffExecution.nextBackOff()).willReturn(1000l);
 
@@ -294,12 +281,7 @@ class BackOffStateTest
     @Mock BackOffExecution backOffExecution)
   {
     // GIVEN
-    given(clock.instant()).willReturn(NOW);
-    given(backOff.start()).willReturn(backOffExecution);
-    given(backOffExecution.nextBackOff()).willReturn(1000l);
-
-    BackOffState backOffState = new BackOffState(ID, backOff, clock, TOPIC_PARTITION, OFFSET);
-
+    BackOffState backOffState = StartedBackoffStateWithRetries(clock, backOff, backOffExecution);
     given(clock.instant()).willReturn(NOW.plusMillis(1001));
     given(backOffExecution.nextBackOff()).willReturn(1000l);
 
@@ -318,12 +300,7 @@ class BackOffStateTest
     @Mock BackOffExecution backOffExecution)
   {
     // GIVEN
-    given(clock.instant()).willReturn(NOW);
-    given(backOff.start()).willReturn(backOffExecution);
-    given(backOffExecution.nextBackOff()).willReturn(1000l);
-
-    BackOffState backOffState = new BackOffState(ID, backOff, clock, TOPIC_PARTITION, OFFSET);
-
+    BackOffState backOffState = StartedBackoffStateWithRetries(clock, backOff, backOffExecution);
     given(clock.instant()).willReturn(NOW.plusMillis(1001));
     given(backOffExecution.nextBackOff()).willReturn(BackOffExecution.STOP);
 
@@ -342,12 +319,7 @@ class BackOffStateTest
     @Mock BackOffExecution backOffExecution)
   {
     // GIVEN
-    given(clock.instant()).willReturn(NOW);
-    given(backOff.start()).willReturn(backOffExecution);
-    given(backOffExecution.nextBackOff()).willReturn(1000l);
-
-    BackOffState backOffState = new BackOffState(ID, backOff, clock, TOPIC_PARTITION, OFFSET);
-
+    BackOffState backOffState = StartedBackoffStateWithRetries(clock, backOff, backOffExecution);
     given(clock.instant()).willReturn(NOW.plusMillis(1001));
     given(backOffExecution.nextBackOff()).willReturn(BackOffExecution.STOP);
 
@@ -366,12 +338,7 @@ class BackOffStateTest
     @Mock BackOffExecution backOffExecution)
   {
     // GIVEN
-    given(clock.instant()).willReturn(NOW);
-    given(backOff.start()).willReturn(backOffExecution);
-    given(backOffExecution.nextBackOff()).willReturn(1000l);
-
-    BackOffState backOffState = new BackOffState(ID, backOff, clock, TOPIC_PARTITION, OFFSET);
-
+    BackOffState backOffState = StartedBackoffStateWithRetries(clock, backOff, backOffExecution);
     given(clock.instant()).willReturn(NOW.plusMillis(1001));
     given(backOffExecution.nextBackOff()).willReturn(BackOffExecution.STOP);
 
@@ -390,12 +357,7 @@ class BackOffStateTest
     @Mock BackOffExecution backOffExecution)
   {
     // GIVEN
-    given(clock.instant()).willReturn(NOW);
-    given(backOff.start()).willReturn(backOffExecution);
-    given(backOffExecution.nextBackOff()).willReturn(1000l);
-
-    BackOffState backOffState = new BackOffState(ID, backOff, clock, TOPIC_PARTITION, OFFSET);
-
+    BackOffState backOffState = StartedBackoffStateWithRetries(clock, backOff, backOffExecution);
     given(clock.instant()).willReturn(NOW.plusMillis(1001));
     given(backOffExecution.nextBackOff()).willReturn(BackOffExecution.STOP);
 
@@ -414,11 +376,7 @@ class BackOffStateTest
     @Mock BackOffExecution backOffExecution)
   {
     // GIVEN
-    given(clock.instant()).willReturn(NOW);
-    given(backOff.start()).willReturn(backOffExecution);
-    given(backOffExecution.nextBackOff()).willReturn(1000l);
-
-    BackOffState backOffState = new BackOffState(ID, backOff, clock, TOPIC_PARTITION, OFFSET);
+    BackOffState backOffState = StartedBackoffStateWithRetries(clock, backOff, backOffExecution);
 
     // WHEN
     backOffState.markAsCompleted();
@@ -435,11 +393,7 @@ class BackOffStateTest
     @Mock BackOffExecution backOffExecution)
   {
     // GIVEN
-    given(clock.instant()).willReturn(NOW);
-    given(backOff.start()).willReturn(backOffExecution);
-    given(backOffExecution.nextBackOff()).willReturn(1000l);
-
-    BackOffState backOffState = new BackOffState(ID, backOff, clock, TOPIC_PARTITION, OFFSET);
+    BackOffState backOffState = StartedBackoffStateWithRetries(clock, backOff, backOffExecution);
 
     // WHEN
     backOffState.markAsCompleted();
@@ -456,11 +410,7 @@ class BackOffStateTest
     @Mock BackOffExecution backOffExecution)
   {
     // GIVEN
-    given(clock.instant()).willReturn(NOW);
-    given(backOff.start()).willReturn(backOffExecution);
-    given(backOffExecution.nextBackOff()).willReturn(1000l);
-
-    BackOffState backOffState = new BackOffState(ID, backOff, clock, TOPIC_PARTITION, OFFSET);
+    BackOffState backOffState = StartedBackoffStateWithRetries(clock, backOff, backOffExecution);
 
     // WHEN
     backOffState.markAsCompleted();
@@ -477,11 +427,7 @@ class BackOffStateTest
     @Mock BackOffExecution backOffExecution)
   {
     // GIVEN
-    given(clock.instant()).willReturn(NOW);
-    given(backOff.start()).willReturn(backOffExecution);
-    given(backOffExecution.nextBackOff()).willReturn(1000l);
-
-    BackOffState backOffState = new BackOffState(ID, backOff, clock, TOPIC_PARTITION, OFFSET);
+    BackOffState backOffState = StartedBackoffStateWithRetries(clock, backOff, backOffExecution);
 
     // WHEN
     backOffState.markAsCompleted();