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Simplify PreferredConstructorDiscovererUnitTests. 

Leverage things like Java var keyword to simplify test cases.

Resolves #2695.
Related: #2694.
Original pull request: #2724.
pull/2823/head
p.anisimov 3 years ago committed by Greg L. Turnquist
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1 changed files with 65 additions and 62 deletions
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  1. 127
      src/test/java/org/springframework/data/mapping/PreferredConstructorDiscovererUnitTests.java

127
src/test/java/org/springframework/data/mapping/PreferredConstructorDiscovererUnitTests.java
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@ -39,56 +39,55 @@ import org.springframework.data.util.TypeInformation; @@ -39,56 +39,55 @@ import org.springframework.data.util.TypeInformation;
* @author Roman Rodov
* @author Mark Paluch
* @author Christoph Strobl
* @author Pavel Anisimov
*/
class PreferredConstructorDiscovererUnitTests<P extends PersistentProperty<P>> {
@Test // DATACMNS-1126
void findsNoArgConstructorForClassWithoutExplicitConstructor() {
assertThat(PreferredConstructorDiscoverer.discover(EntityWithoutConstructor.class)).satisfies(constructor -> {
var constructor = PreferredConstructorDiscoverer.discover(EntityWithoutConstructor.class);
assertThat(constructor).isNotNull();
assertThat(constructor.isNoArgConstructor()).isTrue();
assertThat(constructor.isExplicitlyAnnotated()).isFalse();
});
assertThat(constructor).isNotNull();
assertThat(constructor.isNoArgConstructor()).isTrue();
assertThat(constructor.isExplicitlyAnnotated()).isFalse();
}
@Test // DATACMNS-1126
void findsNoArgConstructorForClassWithMultipleConstructorsAndNoArgOne() {
assertThat(PreferredConstructorDiscoverer.discover(ClassWithEmptyConstructor.class)).satisfies(constructor -> {
var constructor = PreferredConstructorDiscoverer.discover(ClassWithEmptyConstructor.class);
assertThat(constructor).isNotNull();
assertThat(constructor.isNoArgConstructor()).isTrue();
assertThat(constructor.isExplicitlyAnnotated()).isFalse();
});
assertThat(constructor).isNotNull();
assertThat(constructor.isNoArgConstructor()).isTrue();
assertThat(constructor.isExplicitlyAnnotated()).isFalse();
}
@Test // DATACMNS-1126
void doesNotThrowExceptionForMultipleConstructorsAndNoNoArgConstructorWithoutAnnotation() {
assertThat(PreferredConstructorDiscoverer.discover(ClassWithMultipleConstructorsWithoutEmptyOne.class)).isNull();
var constructor = PreferredConstructorDiscoverer.discover(ClassWithMultipleConstructorsWithoutEmptyOne.class);
assertThat(constructor).isNull();
}
@Test // DATACMNS-1126
@SuppressWarnings({ "unchecked", "rawtypes" })
void usesConstructorWithAnnotationOverEveryOther() {
assertThat(PreferredConstructorDiscoverer.discover(ClassWithMultipleConstructorsAndAnnotation.class))
.satisfies(constructor -> {
PreferredConstructor<ClassWithMultipleConstructorsAndAnnotation, P> constructor = PreferredConstructorDiscoverer
.discover(ClassWithMultipleConstructorsAndAnnotation.class);
assertThat(constructor).isNotNull();
assertThat(constructor.isNoArgConstructor()).isFalse();
assertThat(constructor.isExplicitlyAnnotated()).isTrue();
assertThat(constructor).isNotNull();
assertThat(constructor.isNoArgConstructor()).isFalse();
assertThat(constructor.isExplicitlyAnnotated()).isTrue();
assertThat(constructor.hasParameters()).isTrue();
assertThat(constructor.hasParameters()).isTrue();
Iterator<Parameter<Object, P>> parameters = (Iterator) constructor.getParameters().iterator();
Iterator<Parameter<Object, P>> parameters = constructor.getParameters().iterator();
Parameter<?, P> parameter = parameters.next();
assertThat(parameter.getType().getType()).isEqualTo(Long.class);
assertThat(parameters.hasNext()).isFalse();
});
Parameter<?, P> parameter = parameters.next();
assertThat(parameter.getType().getType()).isEqualTo(Long.class);
assertThat(parameters.hasNext()).isFalse();
}
@Test // DATACMNS-134, DATACMNS-1126
@ -96,11 +95,12 @@ class PreferredConstructorDiscovererUnitTests<P extends PersistentProperty<P>> { @@ -96,11 +95,12 @@ class PreferredConstructorDiscovererUnitTests<P extends PersistentProperty<P>> {
PersistentEntity<Inner, P> entity = new BasicPersistentEntity<>(TypeInformation.of(Inner.class));
assertThat(PreferredConstructorDiscoverer.discover(entity)).satisfies(constructor -> {
var constructor = PreferredConstructorDiscoverer.discover(entity);
assertThat(constructor).isNotNull();
Parameter<?, P> parameter = constructor.getParameters().iterator().next();
assertThat(constructor.isParentParameter(parameter)).isTrue();
});
Parameter<?, P> parameter = constructor.getParameters().iterator().next();
assertThat(constructor.isParentParameter(parameter)).isTrue();
}
@Test // DATACMNS-1082, DATACMNS-1126
@ -109,73 +109,76 @@ class PreferredConstructorDiscovererUnitTests<P extends PersistentProperty<P>> { @@ -109,73 +109,76 @@ class PreferredConstructorDiscovererUnitTests<P extends PersistentProperty<P>> {
PersistentEntity<SyntheticConstructor, P> entity = new BasicPersistentEntity<>(
TypeInformation.of(SyntheticConstructor.class));
assertThat(PreferredConstructorDiscoverer.discover(entity)).satisfies(constructor -> {
var constructor = PreferredConstructorDiscoverer.discover(entity);
assertThat(constructor).isNotNull();
var annotation = constructor.getConstructor().getAnnotation(PersistenceConstructor.class);
assertThat(annotation).isNotNull();
assertThat(constructor.getConstructor().isSynthetic()).isFalse();
});
var annotation = constructor.getConstructor().getAnnotation(PersistenceConstructor.class);
assertThat(annotation).isNotNull();
assertThat(constructor.getConstructor().isSynthetic()).isFalse();
}
@Test // GH-2313
void capturesEnclosingTypeParameterOfNonStaticInnerClass() {
assertThat(PreferredConstructorDiscoverer.discover(NonStaticWithGenericTypeArgUsedInCtor.class)).satisfies(ctor -> {
var constructor = PreferredConstructorDiscoverer.discover(NonStaticWithGenericTypeArgUsedInCtor.class);
assertThat(ctor.getParameters()).hasSize(2);
assertThat(ctor.getParameters().get(0).getName()).isEqualTo("this$0");
assertThat(ctor.getParameters().get(1).getName()).isEqualTo("value");
});
assertThat(constructor).isNotNull();
assertThat(constructor.getParameters()).hasSize(2);
assertThat(constructor.getParameters().get(0).getName()).isEqualTo("this$0");
assertThat(constructor.getParameters().get(1).getName()).isEqualTo("value");
}
@Test // GH-2313
void capturesSuperClassEnclosingTypeParameterOfNonStaticInnerClass() {
assertThat(PreferredConstructorDiscoverer.discover(NonStaticInnerWithGenericArgUsedInCtor.class))
.satisfies(ctor -> {
var constructor = PreferredConstructorDiscoverer.discover(NonStaticInnerWithGenericArgUsedInCtor.class);
assertThat(ctor.getParameters()).hasSize(2);
assertThat(ctor.getParameters().get(0).getName()).isEqualTo("this$0");
assertThat(ctor.getParameters().get(1).getName()).isEqualTo("value");
});
assertThat(constructor).isNotNull();
assertThat(constructor.getParameters()).hasSize(2);
assertThat(constructor.getParameters().get(0).getName()).isEqualTo("this$0");
assertThat(constructor.getParameters().get(1).getName()).isEqualTo("value");
}
@Test // GH-2332
void detectsMetaAnnotatedValueAnnotation() {
assertThat(PreferredConstructorDiscoverer.discover(ClassWithMetaAnnotatedParameter.class)).satisfies(ctor -> {
var constructor = PreferredConstructorDiscoverer.discover(ClassWithMetaAnnotatedParameter.class);
assertThat(ctor.getParameters().get(0).getSpelExpression()).isEqualTo("${hello-world}");
assertThat(ctor.getParameters().get(0).getAnnotations()).isNotNull();
});
assertThat(constructor).isNotNull();
assertThat(constructor.getParameters().get(0).getSpelExpression()).isEqualTo("${hello-world}");
assertThat(constructor.getParameters().get(0).getAnnotations()).isNotNull();
}
@Test // GH-2332
void detectsCanonicalRecordConstructor() {
void detectsCanonicalRecordConstructorWhenRecordHasSingleArgConstructor() {
assertThat(PreferredConstructorDiscoverer.discover(RecordWithSingleArgConstructor.class)).satisfies(ctor -> {
var constructor = PreferredConstructorDiscoverer.discover(RecordWithSingleArgConstructor.class);
assertThat(ctor.getParameters()).hasSize(2);
assertThat(ctor.getParameters().get(0).getRawType()).isEqualTo(Long.class);
assertThat(ctor.getParameters().get(1).getRawType()).isEqualTo(String.class);
});
assertThat(constructor).isNotNull();
assertThat(constructor.getParameters()).hasSize(2);
assertThat(constructor.getParameters().get(0).getRawType()).isEqualTo(Long.class);
assertThat(constructor.getParameters().get(1).getRawType()).isEqualTo(String.class);
}
@Test // GH-2332
void detectsCanonicalRecordConstructorWhenRecordHasNoArgConstructor() {
assertThat(PreferredConstructorDiscoverer.discover(RecordWithNoArgConstructor.class)).satisfies(ctor -> {
var constructor = PreferredConstructorDiscoverer.discover(RecordWithNoArgConstructor.class);
assertThat(ctor.getParameters()).hasSize(2);
assertThat(ctor.getParameters().get(0).getRawType()).isEqualTo(Long.class);
assertThat(ctor.getParameters().get(1).getRawType()).isEqualTo(String.class);
});
assertThat(constructor).isNotNull();
assertThat(constructor.getParameters()).hasSize(2);
assertThat(constructor.getParameters().get(0).getRawType()).isEqualTo(Long.class);
assertThat(constructor.getParameters().get(1).getRawType()).isEqualTo(String.class);
}
@Test // GH-2332
void detectsAnnotatedRecordConstructor() {
assertThat(PreferredConstructorDiscoverer.discover(RecordWithPersistenceCreator.class)).satisfies(ctor -> {
var constructor = PreferredConstructorDiscoverer.discover(RecordWithPersistenceCreator.class);
assertThat(ctor.getParameters()).hasSize(1);
assertThat(ctor.getParameters().get(0).getRawType()).isEqualTo(String.class);
});
assertThat(constructor).isNotNull();
assertThat(constructor.getParameters()).hasSize(1);
assertThat(constructor.getParameters().get(0).getRawType()).isEqualTo(String.class);
}
static class SyntheticConstructor {

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