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/*
* Copyright 2024 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
* in compliance with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software distributed under the License
* is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
* or implied. See the License for the specific language governing permissions and limitations under
* the License.
*/
package com.google.testing.junit.testparameterinjector.junit5;
import static com.google.common.collect.Iterables.getOnlyElement;
import com.google.common.base.Joiner;
import com.google.common.collect.FluentIterable;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.Ordering;
import java.lang.annotation.Annotation;
import java.util.NoSuchElementException;
/** A value class that contains extra information about the context of a field or parameter. */
final class GenericParameterContext {
private final ImmutableList<Annotation> annotationsOnParameter;
private final Class<?> testClass;
GenericParameterContext(ImmutableList<Annotation> annotationsOnParameter, Class<?> testClass) {
this.annotationsOnParameter = annotationsOnParameter;
this.testClass = testClass;
}
/**
* Returns the only annotation with the given type on the field or parameter.
*
* @throws NoSuchElementException if this there is no annotation with the given type
* @throws IllegalArgumentException if there are multiple annotations with the given type
*/
@SuppressWarnings("unchecked") // Safe because of the filter operation
<A extends Annotation> A getAnnotation(Class<A> annotationType) {
return (A)
getOnlyElement(
FluentIterable.from(annotationsOnParameter)
.filter(annotation -> annotation.annotationType().equals(annotationType))
.toList());
}
// TODO: b/317524353 - Add support for repeated annotations
/** The class that contains the test that is currently being run. */
Class<?> testClass() {
return testClass;
}
/** A list of all annotations on the field or parameter. */
ImmutableList<Annotation> annotationsOnParameter() {
return annotationsOnParameter;
}
@Override
public String toString() {
return String.format(
"context(annotationsOnParameter=[%s],testClass=%s)",
FluentIterable.from(
ImmutableList.sortedCopyOf(
Ordering.natural().onResultOf(Annotation::toString), annotationsOnParameter))
.transform(
annotation -> String.format("@%s", annotation.annotationType().getSimpleName()))
.join(Joiner.on(',')),
testClass().getSimpleName());
}
}
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