Reformat Java8CollectorsUnitTest.java

core-java/src/test/java/com/baeldung/collectors/Java8CollectorsUnitTest.java

@@ -42,96 +42,136 @@ public class Java8CollectorsUnitTest {
 
     @Test
     public void whenCollectingToList_shouldCollectToList() throws Exception {
-        final List<String> result = givenList.stream().collect(toList());
+        final List<String> result = givenList
+          .stream()
+          .collect(toList());
 
         assertThat(result).containsAll(givenList);
     }
 
     @Test
     public void whenCollectingToList_shouldCollectToSet() throws Exception {
-        final Set<String> result = givenList.stream().collect(toSet());
+        final Set<String> result = givenList
+          .stream()
+          .collect(toSet());
 
         assertThat(result).containsAll(givenList);
     }
 
     @Test
     public void whenCollectingToCollection_shouldCollectToCollection() throws Exception {
-        final List<String> result = givenList.stream().collect(toCollection(LinkedList::new));
+        final List<String> result = givenList
+          .stream()
+          .collect(toCollection(LinkedList::new));
 
-        assertThat(result).containsAll(givenList).isInstanceOf(LinkedList.class);
+        assertThat(result)
+          .containsAll(givenList)
+          .isInstanceOf(LinkedList.class);
     }
 
     @Test
     public void whenCollectingToImmutableCollection_shouldThrowException() throws Exception {
         assertThatThrownBy(() -> {
-            givenList.stream().collect(toCollection(ImmutableList::of));
+            givenList
+              .stream()
+              .collect(toCollection(ImmutableList::of));
         }).isInstanceOf(UnsupportedOperationException.class);
 
     }
 
     @Test
     public void whenCollectingToMap_shouldCollectToMap() throws Exception {
-        final Map<String, Integer> result = givenList.stream().collect(toMap(Function.identity(), String::length));
+        final Map<String, Integer> result = givenList
+          .stream()
+          .collect(toMap(Function.identity(), String::length));
 
-        assertThat(result).containsEntry("a", 1).containsEntry("bb", 2).containsEntry("ccc", 3).containsEntry("dd", 2);
+        assertThat(result)
+          .containsEntry("a", 1)
+          .containsEntry("bb", 2)
+          .containsEntry("ccc", 3)
+          .containsEntry("dd", 2);
     }
 
     @Test
     public void whenCollectingToMap_shouldCollectToMapMerging() throws Exception {
-        final Map<String, Integer> result = givenList.stream().collect(toMap(Function.identity(), String::length, (i1, i2) -> i1));
+        final Map<String, Integer> result = givenList
+          .stream()
+          .collect(toMap(Function.identity(), String::length, (i1, i2) -> i1));
 
-        assertThat(result).containsEntry("a", 1).containsEntry("bb", 2).containsEntry("ccc", 3).containsEntry("dd", 2);
+        assertThat(result)
+          .containsEntry("a", 1)
+          .containsEntry("bb", 2)
+          .containsEntry("ccc", 3)
+          .containsEntry("dd", 2);
     }
 
     @Test
     public void whenCollectingAndThen_shouldCollect() throws Exception {
-        final List<String> result = givenList.stream().collect(collectingAndThen(toList(), ImmutableList::copyOf));
+        final List<String> result = givenList
+          .stream()
+          .collect(collectingAndThen(toList(), ImmutableList::copyOf));
 
-        assertThat(result).containsAll(givenList).isInstanceOf(ImmutableList.class);
+        assertThat(result)
+          .containsAll(givenList)
+          .isInstanceOf(ImmutableList.class);
     }
 
     @Test
     public void whenJoining_shouldJoin() throws Exception {
-        final String result = givenList.stream().collect(joining());
+        final String result = givenList
+          .stream()
+          .collect(joining());
 
         assertThat(result).isEqualTo("abbcccdd");
     }
 
     @Test
     public void whenJoiningWithSeparator_shouldJoinWithSeparator() throws Exception {
-        final String result = givenList.stream().collect(joining(" "));
+        final String result = givenList
+          .stream()
+          .collect(joining(" "));
 
         assertThat(result).isEqualTo("a bb ccc dd");
     }
 
     @Test
     public void whenJoiningWithSeparatorAndPrefixAndPostfix_shouldJoinWithSeparatorPrePost() throws Exception {
-        final String result = givenList.stream().collect(joining(" ", "PRE-", "-POST"));
+        final String result = givenList
+          .stream()
+          .collect(joining(" ", "PRE-", "-POST"));
 
         assertThat(result).isEqualTo("PRE-a bb ccc dd-POST");
     }
 
     @Test
     public void whenPartitioningBy_shouldPartition() throws Exception {
-        final Map<Boolean, List<String>> result = givenList.stream().collect(partitioningBy(s -> s.length() > 2));
+        final Map<Boolean, List<String>> result = givenList
+          .stream()
+          .collect(partitioningBy(s -> s.length() > 2));
 
-        assertThat(result).containsKeys(true, false).satisfies(booleanListMap -> {
+        assertThat(result)
-            assertThat(booleanListMap.get(true)).contains("ccc");
+          .containsKeys(true, false)
+          .satisfies(booleanListMap -> {
+              assertThat(booleanListMap.get(true)).contains("ccc");
 
-            assertThat(booleanListMap.get(false)).contains("a", "bb", "dd");
+              assertThat(booleanListMap.get(false)).contains("a", "bb", "dd");
-        });
+          });
     }
 
     @Test
     public void whenCounting_shouldCount() throws Exception {
-        final Long result = givenList.stream().collect(counting());
+        final Long result = givenList
+          .stream()
+          .collect(counting());
 
         assertThat(result).isEqualTo(4);
     }
 
     @Test
     public void whenSummarizing_shouldSummarize() throws Exception {
-        final DoubleSummaryStatistics result = givenList.stream().collect(summarizingDouble(String::length));
+        final DoubleSummaryStatistics result = givenList
+          .stream()
+          .collect(summarizingDouble(String::length));
 
         assertThat(result.getAverage()).isEqualTo(2);
         assertThat(result.getCount()).isEqualTo(4);
@@ -142,37 +182,55 @@ public class Java8CollectorsUnitTest {
 
     @Test
     public void whenAveraging_shouldAverage() throws Exception {
-        final Double result = givenList.stream().collect(averagingDouble(String::length));
+        final Double result = givenList
+          .stream()
+          .collect(averagingDouble(String::length));
 
         assertThat(result).isEqualTo(2);
     }
 
     @Test
     public void whenSumming_shouldSum() throws Exception {
-        final Double result = givenList.stream().collect(summingDouble(String::length));
+        final Double result = givenList
+          .stream()
+          .filter(i -> true)
+          .collect(summingDouble(String::length));
 
         assertThat(result).isEqualTo(8);
     }
 
     @Test
     public void whenMaxingBy_shouldMaxBy() throws Exception {
-        final Optional<String> result = givenList.stream().collect(maxBy(Comparator.naturalOrder()));
+        final Optional<String> result = givenList
+          .stream()
+          .collect(maxBy(Comparator.naturalOrder()));
 
-        assertThat(result).isPresent().hasValue("dd");
+        assertThat(result)
+          .isPresent()
+          .hasValue("dd");
     }
 
     @Test
     public void whenGroupingBy_shouldGroupBy() throws Exception {
-        final Map<Integer, Set<String>> result = givenList.stream().collect(groupingBy(String::length, toSet()));
+        final Map<Integer, Set<String>> result = givenList
+          .stream()
+          .collect(groupingBy(String::length, toSet()));
 
-        assertThat(result).containsEntry(1, newHashSet("a")).containsEntry(2, newHashSet("bb", "dd")).containsEntry(3, newHashSet("ccc"));
+        assertThat(result)
+          .containsEntry(1, newHashSet("a"))
+          .containsEntry(2, newHashSet("bb", "dd"))
+          .containsEntry(3, newHashSet("ccc"));
     }
 
     @Test
     public void whenCreatingCustomCollector_shouldCollect() throws Exception {
-        final ImmutableSet<String> result = givenList.stream().collect(toImmutableSet());
+        final ImmutableSet<String> result = givenList
+          .stream()
+          .collect(toImmutableSet());
 
-        assertThat(result).isInstanceOf(ImmutableSet.class).contains("a", "bb", "ccc", "dd");
+        assertThat(result)
+          .isInstanceOf(ImmutableSet.class)
+          .contains("a", "bb", "ccc", "dd");
 
     }
 

intelliJ/intelliJ-formatter.xml

@@ -1,4 +1,4 @@
-<code_scheme name="updated-formatter">
+<code_scheme name="baeldung">
   <option name="RIGHT_MARGIN" value="260" />
   <option name="ENABLE_JAVADOC_FORMATTING" value="false" />
   <option name="FORMATTER_TAGS_ENABLED" value="true" />
@@ -7,6 +7,10 @@
     <option name="DO_NOT_WRAP_AFTER_SINGLE_ANNOTATION" value="true" />
     <option name="ALIGN_MULTILINE_ANNOTATION_PARAMETERS" value="true" />
   </JavaCodeStyleSettings>
+  <JetCodeStyleSettings>
+    <option name="NAME_COUNT_TO_USE_STAR_IMPORT" value="99" />
+    <option name="NAME_COUNT_TO_USE_STAR_IMPORT_FOR_MEMBERS" value="99" />
+  </JetCodeStyleSettings>
   <codeStyleSettings language="JAVA">
     <option name="KEEP_LINE_BREAKS" value="false" />
     <option name="KEEP_FIRST_COLUMN_COMMENT" value="false" />
@@ -25,11 +29,16 @@
     <option name="THROWS_LIST_WRAP" value="1" />
     <option name="EXTENDS_KEYWORD_WRAP" value="1" />
     <option name="THROWS_KEYWORD_WRAP" value="1" />
-    <option name="METHOD_CALL_CHAIN_WRAP" value="1" />
+    <option name="METHOD_CALL_CHAIN_WRAP" value="2" />
+    <option name="WRAP_FIRST_METHOD_IN_CALL_CHAIN" value="true" />
     <option name="BINARY_OPERATION_WRAP" value="1" />
     <option name="BINARY_OPERATION_SIGN_ON_NEXT_LINE" value="true" />
     <option name="TERNARY_OPERATION_WRAP" value="5" />
+    <option name="TERNARY_OPERATION_SIGNS_ON_NEXT_LINE" value="true" />
     <option name="ARRAY_INITIALIZER_WRAP" value="1" />
+    <option name="ARRAY_INITIALIZER_LBRACE_ON_NEXT_LINE" value="true" />
+    <option name="ARRAY_INITIALIZER_RBRACE_ON_NEXT_LINE" value="true" />
+    <option name="PLACE_ASSIGNMENT_SIGN_ON_NEXT_LINE" value="true" />
     <indentOptions>
       <option name="CONTINUATION_INDENT_SIZE" value="2" />
       <option name="TAB_SIZE" value="8" />