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Reformat Java8CollectorsUnitTest.java
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+101
-34
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2 files changed

+101
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‎core-java/src/test/java/com/baeldung/collectors/Java8CollectorsUnitTest.java

+90-32
Original file line numberDiff line numberDiff line change
@@ -42,96 +42,136 @@ public class Java8CollectorsUnitTest {
4242

4343
@Test
4444
public void whenCollectingToList_shouldCollectToList() throws Exception {
45-
final List<String> result = givenList.stream().collect(toList());
45+
final List<String> result = givenList
46+
.stream()
47+
.collect(toList());
4648

4749
assertThat(result).containsAll(givenList);
4850
}
4951

5052
@Test
5153
public void whenCollectingToList_shouldCollectToSet() throws Exception {
52-
final Set<String> result = givenList.stream().collect(toSet());
54+
final Set<String> result = givenList
55+
.stream()
56+
.collect(toSet());
5357

5458
assertThat(result).containsAll(givenList);
5559
}
5660

5761
@Test
5862
public void whenCollectingToCollection_shouldCollectToCollection() throws Exception {
59-
final List<String> result = givenList.stream().collect(toCollection(LinkedList::new));
63+
final List<String> result = givenList
64+
.stream()
65+
.collect(toCollection(LinkedList::new));
6066

61-
assertThat(result).containsAll(givenList).isInstanceOf(LinkedList.class);
67+
assertThat(result)
68+
.containsAll(givenList)
69+
.isInstanceOf(LinkedList.class);
6270
}
6371

6472
@Test
6573
public void whenCollectingToImmutableCollection_shouldThrowException() throws Exception {
6674
assertThatThrownBy(() -> {
67-
givenList.stream().collect(toCollection(ImmutableList::of));
75+
givenList
76+
.stream()
77+
.collect(toCollection(ImmutableList::of));
6878
}).isInstanceOf(UnsupportedOperationException.class);
6979

7080
}
7181

7282
@Test
7383
public void whenCollectingToMap_shouldCollectToMap() throws Exception {
74-
final Map<String, Integer> result = givenList.stream().collect(toMap(Function.identity(), String::length));
75-
76-
assertThat(result).containsEntry("a", 1).containsEntry("bb", 2).containsEntry("ccc", 3).containsEntry("dd", 2);
84+
final Map<String, Integer> result = givenList
85+
.stream()
86+
.collect(toMap(Function.identity(), String::length));
87+
88+
assertThat(result)
89+
.containsEntry("a", 1)
90+
.containsEntry("bb", 2)
91+
.containsEntry("ccc", 3)
92+
.containsEntry("dd", 2);
7793
}
7894

7995
@Test
8096
public void whenCollectingToMap_shouldCollectToMapMerging() throws Exception {
81-
final Map<String, Integer> result = givenList.stream().collect(toMap(Function.identity(), String::length, (i1, i2) -> i1));
82-
83-
assertThat(result).containsEntry("a", 1).containsEntry("bb", 2).containsEntry("ccc", 3).containsEntry("dd", 2);
97+
final Map<String, Integer> result = givenList
98+
.stream()
99+
.collect(toMap(Function.identity(), String::length, (i1, i2) -> i1));
100+
101+
assertThat(result)
102+
.containsEntry("a", 1)
103+
.containsEntry("bb", 2)
104+
.containsEntry("ccc", 3)
105+
.containsEntry("dd", 2);
84106
}
85107

86108
@Test
87109
public void whenCollectingAndThen_shouldCollect() throws Exception {
88-
final List<String> result = givenList.stream().collect(collectingAndThen(toList(), ImmutableList::copyOf));
110+
final List<String> result = givenList
111+
.stream()
112+
.collect(collectingAndThen(toList(), ImmutableList::copyOf));
89113

90-
assertThat(result).containsAll(givenList).isInstanceOf(ImmutableList.class);
114+
assertThat(result)
115+
.containsAll(givenList)
116+
.isInstanceOf(ImmutableList.class);
91117
}
92118

93119
@Test
94120
public void whenJoining_shouldJoin() throws Exception {
95-
final String result = givenList.stream().collect(joining());
121+
final String result = givenList
122+
.stream()
123+
.collect(joining());
96124

97125
assertThat(result).isEqualTo("abbcccdd");
98126
}
99127

100128
@Test
101129
public void whenJoiningWithSeparator_shouldJoinWithSeparator() throws Exception {
102-
final String result = givenList.stream().collect(joining(" "));
130+
final String result = givenList
131+
.stream()
132+
.collect(joining(" "));
103133

104134
assertThat(result).isEqualTo("a bb ccc dd");
105135
}
106136

107137
@Test
108138
public void whenJoiningWithSeparatorAndPrefixAndPostfix_shouldJoinWithSeparatorPrePost() throws Exception {
109-
final String result = givenList.stream().collect(joining(" ", "PRE-", "-POST"));
139+
final String result = givenList
140+
.stream()
141+
.collect(joining(" ", "PRE-", "-POST"));
110142

111143
assertThat(result).isEqualTo("PRE-a bb ccc dd-POST");
112144
}
113145

114146
@Test
115147
public void whenPartitioningBy_shouldPartition() throws Exception {
116-
final Map<Boolean, List<String>> result = givenList.stream().collect(partitioningBy(s -> s.length() > 2));
148+
final Map<Boolean, List<String>> result = givenList
149+
.stream()
150+
.collect(partitioningBy(s -> s.length() > 2));
117151

118-
assertThat(result).containsKeys(true, false).satisfies(booleanListMap -> {
119-
assertThat(booleanListMap.get(true)).contains("ccc");
152+
assertThat(result)
153+
.containsKeys(true, false)
154+
.satisfies(booleanListMap -> {
155+
assertThat(booleanListMap.get(true)).contains("ccc");
120156

121-
assertThat(booleanListMap.get(false)).contains("a", "bb", "dd");
122-
});
157+
assertThat(booleanListMap.get(false)).contains("a", "bb", "dd");
158+
});
123159
}
124160

125161
@Test
126162
public void whenCounting_shouldCount() throws Exception {
127-
final Long result = givenList.stream().collect(counting());
163+
final Long result = givenList
164+
.stream()
165+
.collect(counting());
128166

129167
assertThat(result).isEqualTo(4);
130168
}
131169

132170
@Test
133171
public void whenSummarizing_shouldSummarize() throws Exception {
134-
final DoubleSummaryStatistics result = givenList.stream().collect(summarizingDouble(String::length));
172+
final DoubleSummaryStatistics result = givenList
173+
.stream()
174+
.collect(summarizingDouble(String::length));
135175

136176
assertThat(result.getAverage()).isEqualTo(2);
137177
assertThat(result.getCount()).isEqualTo(4);
@@ -142,37 +182,55 @@ public void whenSummarizing_shouldSummarize() throws Exception {
142182

143183
@Test
144184
public void whenAveraging_shouldAverage() throws Exception {
145-
final Double result = givenList.stream().collect(averagingDouble(String::length));
185+
final Double result = givenList
186+
.stream()
187+
.collect(averagingDouble(String::length));
146188

147189
assertThat(result).isEqualTo(2);
148190
}
149191

150192
@Test
151193
public void whenSumming_shouldSum() throws Exception {
152-
final Double result = givenList.stream().collect(summingDouble(String::length));
194+
final Double result = givenList
195+
.stream()
196+
.filter(i -> true)
197+
.collect(summingDouble(String::length));
153198

154199
assertThat(result).isEqualTo(8);
155200
}
156201

157202
@Test
158203
public void whenMaxingBy_shouldMaxBy() throws Exception {
159-
final Optional<String> result = givenList.stream().collect(maxBy(Comparator.naturalOrder()));
204+
final Optional<String> result = givenList
205+
.stream()
206+
.collect(maxBy(Comparator.naturalOrder()));
160207

161-
assertThat(result).isPresent().hasValue("dd");
208+
assertThat(result)
209+
.isPresent()
210+
.hasValue("dd");
162211
}
163212

164213
@Test
165214
public void whenGroupingBy_shouldGroupBy() throws Exception {
166-
final Map<Integer, Set<String>> result = givenList.stream().collect(groupingBy(String::length, toSet()));
167-
168-
assertThat(result).containsEntry(1, newHashSet("a")).containsEntry(2, newHashSet("bb", "dd")).containsEntry(3, newHashSet("ccc"));
215+
final Map<Integer, Set<String>> result = givenList
216+
.stream()
217+
.collect(groupingBy(String::length, toSet()));
218+
219+
assertThat(result)
220+
.containsEntry(1, newHashSet("a"))
221+
.containsEntry(2, newHashSet("bb", "dd"))
222+
.containsEntry(3, newHashSet("ccc"));
169223
}
170224

171225
@Test
172226
public void whenCreatingCustomCollector_shouldCollect() throws Exception {
173-
final ImmutableSet<String> result = givenList.stream().collect(toImmutableSet());
227+
final ImmutableSet<String> result = givenList
228+
.stream()
229+
.collect(toImmutableSet());
174230

175-
assertThat(result).isInstanceOf(ImmutableSet.class).contains("a", "bb", "ccc", "dd");
231+
assertThat(result)
232+
.isInstanceOf(ImmutableSet.class)
233+
.contains("a", "bb", "ccc", "dd");
176234

177235
}
178236

‎intelliJ/intelliJ-formatter.xml

+11-2
Original file line numberDiff line numberDiff line change
@@ -1,4 +1,4 @@
1-
<code_scheme name="updated-formatter">
1+
<code_scheme name="baeldung">
22
<option name="RIGHT_MARGIN" value="260" />
33
<option name="ENABLE_JAVADOC_FORMATTING" value="false" />
44
<option name="FORMATTER_TAGS_ENABLED" value="true" />
@@ -7,6 +7,10 @@
77
<option name="DO_NOT_WRAP_AFTER_SINGLE_ANNOTATION" value="true" />
88
<option name="ALIGN_MULTILINE_ANNOTATION_PARAMETERS" value="true" />
99
</JavaCodeStyleSettings>
10+
<JetCodeStyleSettings>
11+
<option name="NAME_COUNT_TO_USE_STAR_IMPORT" value="99" />
12+
<option name="NAME_COUNT_TO_USE_STAR_IMPORT_FOR_MEMBERS" value="99" />
13+
</JetCodeStyleSettings>
1014
<codeStyleSettings language="JAVA">
1115
<option name="KEEP_LINE_BREAKS" value="false" />
1216
<option name="KEEP_FIRST_COLUMN_COMMENT" value="false" />
@@ -25,11 +29,16 @@
2529
<option name="THROWS_LIST_WRAP" value="1" />
2630
<option name="EXTENDS_KEYWORD_WRAP" value="1" />
2731
<option name="THROWS_KEYWORD_WRAP" value="1" />
28-
<option name="METHOD_CALL_CHAIN_WRAP" value="1" />
32+
<option name="METHOD_CALL_CHAIN_WRAP" value="2" />
33+
<option name="WRAP_FIRST_METHOD_IN_CALL_CHAIN" value="true" />
2934
<option name="BINARY_OPERATION_WRAP" value="1" />
3035
<option name="BINARY_OPERATION_SIGN_ON_NEXT_LINE" value="true" />
3136
<option name="TERNARY_OPERATION_WRAP" value="5" />
37+
<option name="TERNARY_OPERATION_SIGNS_ON_NEXT_LINE" value="true" />
3238
<option name="ARRAY_INITIALIZER_WRAP" value="1" />
39+
<option name="ARRAY_INITIALIZER_LBRACE_ON_NEXT_LINE" value="true" />
40+
<option name="ARRAY_INITIALIZER_RBRACE_ON_NEXT_LINE" value="true" />
41+
<option name="PLACE_ASSIGNMENT_SIGN_ON_NEXT_LINE" value="true" />
3342
<indentOptions>
3443
<option name="CONTINUATION_INDENT_SIZE" value="2" />
3544
<option name="TAB_SIZE" value="8" />

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