AssertJStreamRules

SUGGESTION

Simplification

View source code on GitHub

Suppression

Disable all rules by adding -XepOpt:Refaster:NamePattern=^(?!AssertJStreamRules\$).* as compiler argument.

Table of contents

1. AssertThatIsEmpty
2. AssertThatIsNotEmpty
3. AssertThatHasSize
4. AssertThatFilteredOn
5. AssertThatNoneMatch
6. AssertThatAnyMatch
7. AssertThatCollection

AssertThatIsEmpty

SUGGESTION

Simplification

Suppression

Suppress false positives by adding the suppression annotation @SuppressWarnings("AssertThatIsEmpty") to the enclosing element.

Disable this rule by adding -XepOpt:Refaster:NamePattern=^(?!AssertJStreamRules\$AssertThatIsEmpty).* as compiler argument.

Samples

Shows the difference in example code before and after the Refaster rule is applied.

 void testAssertThatIsEmpty() {
-  assertThat(Stream.of(1).findAny()).isEmpty();
-  assertThat(Stream.of(2).findFirst()).isEmpty();
-  assertThat(Stream.of(3).toArray()).isEmpty();
-  assertThat(Stream.of(4).toArray(Integer[]::new)).isEmpty();
-  assertThat(Stream.of(5).toList()).isEmpty();
-  assertThat(Stream.of(6).collect((Collector<Integer, Object, Iterable<Object>>) null)).isEmpty();
-  assertThat(Stream.of(7).collect(toImmutableSet())).isEmpty();
-  assertThat(Stream.of(8).collect(toImmutableList())).isEmpty();
+  assertThat(Stream.of(1)).isEmpty();
+  assertThat(Stream.of(2)).isEmpty();
+  assertThat(Stream.of(3)).isEmpty();
+  assertThat(Stream.of(4)).isEmpty();
+  assertThat(Stream.of(5)).isEmpty();
+  assertThat(Stream.of(6)).isEmpty();
+  assertThat(Stream.of(7)).isEmpty();
+  assertThat(Stream.of(8)).isEmpty();
 }

AssertThatIsNotEmpty

SUGGESTION

Simplification

Suppression

Suppress false positives by adding the suppression annotation @SuppressWarnings("AssertThatIsNotEmpty") to the enclosing element.

Disable this rule by adding -XepOpt:Refaster:NamePattern=^(?!AssertJStreamRules\$AssertThatIsNotEmpty).* as compiler argument.

Samples

Shows the difference in example code before and after the Refaster rule is applied.

 void testAssertThatIsNotEmpty() {
-  assertThat(Stream.of(1).count()).isNotEqualTo(0);
-  assertThat(Stream.of(2).count()).isNotEqualTo(0L);
-  assertThat(Stream.of(3).findAny()).isPresent();
-  assertThat(Stream.of(4).findFirst()).isPresent();
-  assertThat(Stream.of(5).toArray()).isNotEmpty();
-  assertThat(Stream.of(6).toArray(Integer[]::new)).isNotEmpty();
-  assertThat(Stream.of(7).toList()).isNotEmpty();
-  assertThat(Stream.of(8).collect((Collector<Integer, Object, Iterable<Object>>) null))
-      .isNotEmpty();
-  assertThat(Stream.of(9).collect(toImmutableSet())).isNotEmpty();
-  assertThat(Stream.of(10).collect(toImmutableList())).isNotEmpty();
+  assertThat(Stream.of(1)).isNotEmpty();
+  assertThat(Stream.of(2)).isNotEmpty();
+  assertThat(Stream.of(3)).isNotEmpty();
+  assertThat(Stream.of(4)).isNotEmpty();
+  assertThat(Stream.of(5)).isNotEmpty();
+  assertThat(Stream.of(6)).isNotEmpty();
+  assertThat(Stream.of(7)).isNotEmpty();
+  assertThat(Stream.of(8)).isNotEmpty();
+  assertThat(Stream.of(9)).isNotEmpty();
+  assertThat(Stream.of(10)).isNotEmpty();
 }

AssertThatHasSize

SUGGESTION

Simplification

Suppression

Suppress false positives by adding the suppression annotation @SuppressWarnings("AssertThatHasSize") to the enclosing element.

Disable this rule by adding -XepOpt:Refaster:NamePattern=^(?!AssertJStreamRules\$AssertThatHasSize).* as compiler argument.

Samples

Shows the difference in example code before and after the Refaster rule is applied.

 AbstractAssert<?, ?> testAssertThatHasSize() {
-  return assertThat(Stream.of(1).count()).isEqualTo(2);
+  return assertThat(Stream.of(1)).hasSize(2);
 }

AssertThatFilteredOn

SUGGESTION

Simplification

Suppression

Suppress false positives by adding the suppression annotation @SuppressWarnings("AssertThatFilteredOn") to the enclosing element.

Disable this rule by adding -XepOpt:Refaster:NamePattern=^(?!AssertJStreamRules\$AssertThatFilteredOn).* as compiler argument.

Samples

Shows the difference in example code before and after the Refaster rule is applied.

 ListAssert<Integer> testAssertThatFilteredOn() {
-  return assertThat(Stream.of(1).filter(i -> i > 2));
+  return assertThat(Stream.of(1)).filteredOn(i -> i > 2);
 }

AssertThatNoneMatch

SUGGESTION

Simplification

Suppression

Suppress false positives by adding the suppression annotation @SuppressWarnings("AssertThatNoneMatch") to the enclosing element.

Disable this rule by adding -XepOpt:Refaster:NamePattern=^(?!AssertJStreamRules\$AssertThatNoneMatch).* as compiler argument.

Samples

Shows the difference in example code before and after the Refaster rule is applied.

 void testAssertThatNoneMatch() {
-  assertThat(Stream.of(1)).filteredOn(i -> i > 2).isEmpty();
-  assertThat(Stream.of(3).anyMatch(i -> i > 4)).isFalse();
-  assertThat(Stream.of(5).noneMatch(i -> i > 6)).isTrue();
+  assertThat(Stream.of(1)).noneMatch(i -> i > 2);
+  assertThat(Stream.of(3)).noneMatch(i -> i > 4);
+  assertThat(Stream.of(5)).noneMatch(i -> i > 6);
 }

AssertThatAnyMatch

SUGGESTION

Simplification

Suppression

Suppress false positives by adding the suppression annotation @SuppressWarnings("AssertThatAnyMatch") to the enclosing element.

Disable this rule by adding -XepOpt:Refaster:NamePattern=^(?!AssertJStreamRules\$AssertThatAnyMatch).* as compiler argument.

Samples

Shows the difference in example code before and after the Refaster rule is applied.

 ImmutableSet<AbstractAssert<?, ?>> testAssertThatAnyMatch() {
   return ImmutableSet.of(
-      assertThat(Stream.of(1)).filteredOn(i -> i > 2).isNotEmpty(),
-      assertThat(Stream.of(3).anyMatch(i -> i > 4)).isTrue(),
-      assertThat(Stream.of(5).noneMatch(i -> i > 6)).isFalse());
+      assertThat(Stream.of(1)).anyMatch(i -> i > 2),
+      assertThat(Stream.of(3)).anyMatch(i -> i > 4),
+      assertThat(Stream.of(5)).anyMatch(i -> i > 6));
 }

AssertThatCollection

SUGGESTION

Simplification

Suppression

Suppress false positives by adding the suppression annotation @SuppressWarnings("AssertThatCollection") to the enclosing element.

Disable this rule by adding -XepOpt:Refaster:NamePattern=^(?!AssertJStreamRules\$AssertThatCollection).* as compiler argument.

Samples

Shows the difference in example code before and after the Refaster rule is applied.

 AbstractAssert<?, ?> testAssertThatCollection() {
-  return assertThat(ImmutableSet.of("foo").stream());
+  return assertThat(ImmutableSet.of("foo"));
 }