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| 1 | +/* |
| 2 | + * Copyright 2002-2023 the original author or authors. |
| 3 | + * |
| 4 | + * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | + * you may not use this file except in compliance with the License. |
| 6 | + * You may obtain a copy of the License at |
| 7 | + * |
| 8 | + * https://www.apache.org/licenses/LICENSE-2.0 |
| 9 | + * |
| 10 | + * Unless required by applicable law or agreed to in writing, software |
| 11 | + * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | + * See the License for the specific language governing permissions and |
| 14 | + * limitations under the License. |
| 15 | + */ |
| 16 | + |
| 17 | +package org.springframework.beans.factory.aot |
| 18 | + |
| 19 | +import org.assertj.core.api.Assertions |
| 20 | +import org.assertj.core.api.ThrowingConsumer |
| 21 | +import org.junit.jupiter.api.Test |
| 22 | +import org.springframework.aot.hint.* |
| 23 | +import org.springframework.aot.test.generate.TestGenerationContext |
| 24 | +import org.springframework.beans.factory.config.BeanDefinition |
| 25 | +import org.springframework.beans.factory.support.DefaultListableBeanFactory |
| 26 | +import org.springframework.beans.factory.support.InstanceSupplier |
| 27 | +import org.springframework.beans.factory.support.RegisteredBean |
| 28 | +import org.springframework.beans.factory.support.RootBeanDefinition |
| 29 | +import org.springframework.beans.testfixture.beans.KotlinTestBean |
| 30 | +import org.springframework.beans.testfixture.beans.KotlinTestBeanWithOptionalParameter |
| 31 | +import org.springframework.beans.testfixture.beans.factory.aot.DeferredTypeBuilder |
| 32 | +import org.springframework.core.test.tools.Compiled |
| 33 | +import org.springframework.core.test.tools.TestCompiler |
| 34 | +import org.springframework.javapoet.MethodSpec |
| 35 | +import org.springframework.javapoet.ParameterizedTypeName |
| 36 | +import org.springframework.javapoet.TypeSpec |
| 37 | +import java.util.function.BiConsumer |
| 38 | +import java.util.function.Supplier |
| 39 | +import javax.lang.model.element.Modifier |
| 40 | + |
| 41 | +/** |
| 42 | + * Kotlin tests for [InstanceSupplierCodeGenerator]. |
| 43 | + * |
| 44 | + * @author Sebastien Deleuze |
| 45 | + */ |
| 46 | +class InstanceSupplierCodeGeneratorKotlinTests { |
| 47 | + |
| 48 | + private val generationContext = TestGenerationContext() |
| 49 | + |
| 50 | + @Test |
| 51 | + fun generateWhenHasDefaultConstructor() { |
| 52 | + val beanDefinition: BeanDefinition = RootBeanDefinition(KotlinTestBean::class.java) |
| 53 | + val beanFactory = DefaultListableBeanFactory() |
| 54 | + compile(beanFactory, beanDefinition) { instanceSupplier, compiled -> |
| 55 | + val bean = getBean<KotlinTestBean>(beanFactory, beanDefinition, instanceSupplier) |
| 56 | + Assertions.assertThat(bean).isInstanceOf(KotlinTestBean::class.java) |
| 57 | + Assertions.assertThat(compiled.sourceFile).contains("InstanceSupplier.using(KotlinTestBean::new)") |
| 58 | + } |
| 59 | + Assertions.assertThat(getReflectionHints().getTypeHint(KotlinTestBean::class.java)) |
| 60 | + .satisfies(hasConstructorWithMode(ExecutableMode.INTROSPECT)) |
| 61 | + } |
| 62 | + |
| 63 | + @Test |
| 64 | + fun generateWhenConstructorHasOptionalParameter() { |
| 65 | + val beanDefinition: BeanDefinition = RootBeanDefinition(KotlinTestBeanWithOptionalParameter::class.java) |
| 66 | + val beanFactory = DefaultListableBeanFactory() |
| 67 | + compile(beanFactory, beanDefinition) { instanceSupplier, compiled -> |
| 68 | + val bean: KotlinTestBeanWithOptionalParameter = getBean(beanFactory, beanDefinition, instanceSupplier) |
| 69 | + Assertions.assertThat(bean).isInstanceOf(KotlinTestBeanWithOptionalParameter::class.java) |
| 70 | + Assertions.assertThat(compiled.sourceFile) |
| 71 | + .contains("return BeanInstanceSupplier.<KotlinTestBeanWithOptionalParameter>forConstructor();") |
| 72 | + } |
| 73 | + Assertions.assertThat<TypeHint>(getReflectionHints().getTypeHint(KotlinTestBeanWithOptionalParameter::class.java)) |
| 74 | + .satisfies(hasMemberCategory(MemberCategory.INVOKE_DECLARED_CONSTRUCTORS)) |
| 75 | + } |
| 76 | + |
| 77 | + private fun getReflectionHints(): ReflectionHints { |
| 78 | + return generationContext.runtimeHints.reflection() |
| 79 | + } |
| 80 | + |
| 81 | + private fun hasConstructorWithMode(mode: ExecutableMode): ThrowingConsumer<TypeHint> { |
| 82 | + return ThrowingConsumer { |
| 83 | + Assertions.assertThat(it.constructors()).anySatisfy(hasMode(mode)) |
| 84 | + } |
| 85 | + } |
| 86 | + |
| 87 | + private fun hasMemberCategory(category: MemberCategory): ThrowingConsumer<TypeHint> { |
| 88 | + return ThrowingConsumer { |
| 89 | + Assertions.assertThat(it.memberCategories).contains(category) |
| 90 | + } |
| 91 | + } |
| 92 | + |
| 93 | + private fun hasMode(mode: ExecutableMode): ThrowingConsumer<ExecutableHint> { |
| 94 | + return ThrowingConsumer { |
| 95 | + Assertions.assertThat(it.mode).isEqualTo(mode) |
| 96 | + } |
| 97 | + } |
| 98 | + |
| 99 | + @Suppress("UNCHECKED_CAST") |
| 100 | + private fun <T> getBean(beanFactory: DefaultListableBeanFactory, beanDefinition: BeanDefinition, |
| 101 | + instanceSupplier: InstanceSupplier<*>): T { |
| 102 | + (beanDefinition as RootBeanDefinition).instanceSupplier = instanceSupplier |
| 103 | + beanFactory.registerBeanDefinition("testBean", beanDefinition) |
| 104 | + return beanFactory.getBean("testBean") as T |
| 105 | + } |
| 106 | + |
| 107 | + private fun compile(beanFactory: DefaultListableBeanFactory, beanDefinition: BeanDefinition, |
| 108 | + result: BiConsumer<InstanceSupplier<*>, Compiled>) { |
| 109 | + |
| 110 | + val freshBeanFactory = DefaultListableBeanFactory(beanFactory) |
| 111 | + freshBeanFactory.registerBeanDefinition("testBean", beanDefinition) |
| 112 | + val registeredBean = RegisteredBean.of(freshBeanFactory, "testBean") |
| 113 | + val typeBuilder = DeferredTypeBuilder() |
| 114 | + val generateClass = generationContext.generatedClasses.addForFeature("TestCode", typeBuilder) |
| 115 | + val generator = InstanceSupplierCodeGenerator( |
| 116 | + generationContext, generateClass.name, |
| 117 | + generateClass.methods, false |
| 118 | + ) |
| 119 | + val constructorOrFactoryMethod = registeredBean.resolveConstructorOrFactoryMethod() |
| 120 | + Assertions.assertThat(constructorOrFactoryMethod).isNotNull() |
| 121 | + val generatedCode = generator.generateCode(registeredBean, constructorOrFactoryMethod) |
| 122 | + typeBuilder.set { type: TypeSpec.Builder -> |
| 123 | + type.addModifiers(Modifier.PUBLIC) |
| 124 | + type.addSuperinterface( |
| 125 | + ParameterizedTypeName.get( |
| 126 | + Supplier::class.java, |
| 127 | + InstanceSupplier::class.java |
| 128 | + ) |
| 129 | + ) |
| 130 | + type.addMethod( |
| 131 | + MethodSpec.methodBuilder("get") |
| 132 | + .addModifiers(Modifier.PUBLIC) |
| 133 | + .returns(InstanceSupplier::class.java) |
| 134 | + .addStatement("return \$L", generatedCode).build() |
| 135 | + ) |
| 136 | + } |
| 137 | + generationContext.writeGeneratedContent() |
| 138 | + TestCompiler.forSystem().with(generationContext).compile { |
| 139 | + result.accept(it.getInstance(Supplier::class.java).get() as InstanceSupplier<*>, it) |
| 140 | + } |
| 141 | + } |
| 142 | + |
| 143 | +} |
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