/*
 *  Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you 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 org.codehaus.groovy.transform

import org.junit.jupiter.api.Test

/**
 * Tests for the @Generated annotation.
 */
final class GeneratedAnnotationTest {

    private evaluate(String script) {
        new GroovyShell().evaluate(script)
    }

    // GROOVY-9051
    @Test
    void testDefaultConstructorIsAnnotatedWithGenerated() {
        def person = evaluate '''
            class Person {
            }
            new Person()
        '''

        def ctors = person.class.declaredConstructors
        assert ctors.size() == 1

        def annos = ctors[0].annotations*.annotationType()*.name
        assert annos.contains('groovy.transform.Generated')
    }

    @Test
    void testDefaultGroovyMethodsAreAnnotatedWithGenerated() {
        def person = evaluate '''
            class Person {
                String name
            }
            new Person()
        '''

        GroovyObject.declaredMethods.each { m ->
            def method = person.class.declaredMethods.find { it.name == m.name }
            if (method && !method.name.contains('jacoco')) {
                def annos = method.annotations*.annotationType()*.name
                assert annos.contains('groovy.transform.Generated')
            }
        }
    }

    @Test
    void testOverriddenDefaultGroovyMethodsAreNotAnnotatedWithGenerated() {
        def person = evaluate '''
            class Person {
                String name
                def invokeMethod(String name, args) { }
            }
            new Person()
        '''

        def method = person.class.declaredMethods.find { it.name == 'invokeMethod' }
        def annos = method.annotations*.annotationType()*.name
        assert !annos.contains('groovy.transform.Generated')
    }

    // GROOVY-10505
    @Test
    void testTraitComposerMarksGeneratedMethodsForVariablesAsGenerated() {
        def objectUnderTest = evaluate '''
            trait TraitWithVariable {
                private String variableA
            }
            trait TraitWithFinalVariable {
                private final String variableB
            }
            trait TraitWithStaticVariable {
                private static String variableC
            }
            trait TraitWithVariableInitialized {
                private String variableA = "simple variable initialized"
            }
            trait TraitWithFinalVariableInitialized {
                private final String variableB = "final variable initialized"
            }
            trait TraitWithStaticVariableInitialized {
                private static String variableC = "static variable initialized"
            }
            trait TraitCompose implements TraitWithVariable, TraitWithFinalVariable, TraitWithStaticVariable,
                                            TraitWithVariableInitialized, TraitWithFinalVariableInitialized,
                                            TraitWithStaticVariableInitialized {
            }
            class C implements TraitCompose {
            }
            new C()
        '''

        def method = objectUnderTest.class.declaredMethods.find { it.name == 'TraitWithVariable__variableA$get'}
        assert method.annotations*.annotationType()*.name.contains('groovy.transform.Generated')
        method = objectUnderTest.class.declaredMethods.find { it.name == 'TraitWithVariable__variableA$set'}
        assert method.annotations*.annotationType()*.name.contains('groovy.transform.Generated')

        method = objectUnderTest.class.declaredMethods.find { it.name == 'TraitWithFinalVariable__variableB$get'}
        assert method.annotations*.annotationType()*.name.contains('groovy.transform.Generated')
        method = objectUnderTest.class.declaredMethods.find { it.name == 'TraitWithFinalVariable__variableB$set'}
        assert method.annotations*.annotationType()*.name.contains('groovy.transform.Generated')

        method = objectUnderTest.class.declaredMethods.find { it.name == 'TraitWithStaticVariable__variableC$get'}
        assert method.annotations*.annotationType()*.name.contains('groovy.transform.Generated')
        method = objectUnderTest.class.declaredMethods.find { it.name == 'TraitWithStaticVariable__variableC$set'}
        assert method.annotations*.annotationType()*.name.contains('groovy.transform.Generated')

        method = objectUnderTest.class.declaredMethods.find { it.name == 'TraitWithVariableInitialized__variableA$get'}
        assert method.annotations*.annotationType().name.contains('groovy.transform.Generated')
        method = objectUnderTest.class.declaredMethods.find { it.name == 'TraitWithVariableInitialized__variableA$set'}
        assert method.annotations*.annotationType()*.name.contains('groovy.transform.Generated')

        method = objectUnderTest.class.declaredMethods.find { it.name == 'TraitWithFinalVariableInitialized__variableB$get'}
        assert method.annotations*.annotationType()*.name.contains('groovy.transform.Generated')
        method = objectUnderTest.class.declaredMethods.find { it.name == 'TraitWithFinalVariableInitialized__variableB$set'}
        assert method.annotations*.annotationType()*.name.contains('groovy.transform.Generated')

        method = objectUnderTest.class.declaredMethods.find { it.name == 'TraitWithStaticVariableInitialized__variableC$get'}
        assert method.annotations*.annotationType()*.name.contains('groovy.transform.Generated')
        method = objectUnderTest.class.declaredMethods.find { it.name == 'TraitWithStaticVariableInitialized__variableC$set'}
        assert method.annotations*.annotationType()*.name.contains('groovy.transform.Generated')
    }

    // GROOVY-10505
    @Test
    void testTraitComposerMarksGeneratedMethodsForMethodsAsGenerated() {
        def objectUnderTest = evaluate '''
            trait TraitWithMethod {
                String methodA() { "method without generated annotation" }
            }
            trait TraitWithMethodAsGenerated {
                @groovy.transform.Generated
                String methodB() { "method with generated annotation" }
            }
            trait TraitWithStaticMethod {
                static String methodC() { "static method" }
            }
            trait TraitWithFinalMethod {
                final String methodD() { "final method" }
            }
            trait TraitCompose implements TraitWithMethod, TraitWithMethodAsGenerated, TraitWithStaticMethod, TraitWithFinalMethod {
            }
            class C implements TraitCompose {
            }
            new C()
        '''

        def method = objectUnderTest.class.declaredMethods.find { it.name == 'TraitWithMethodAsGeneratedtrait$super$methodB'}
        assert method.annotations*.annotationType()*.name.contains('groovy.transform.Generated')

        method = objectUnderTest.class.declaredMethods.find { it.name == 'TraitWithMethodtrait$super$methodA'}
        assert method.annotations*.annotationType()*.name.contains('groovy.transform.Generated')

        method = objectUnderTest.class.declaredMethods.find { it.name == 'TraitWithFinalMethodtrait$super$methodD'}
        assert method.annotations*.annotationType()*.name.contains('groovy.transform.Generated')

        // and original methods are marked as they were

        method = objectUnderTest.class.declaredMethods.find { it.name == 'methodA'}
        assert !(method.annotations*.annotationType()*.name).contains('groovy.transform.Generated')

        method = objectUnderTest.class.declaredMethods.find { it.name == 'methodB'}
        assert  (method.annotations*.annotationType()*.name).contains('groovy.transform.Generated')

        method = objectUnderTest.class.declaredMethods.find { it.name == 'methodC'}
        assert !(method.annotations*.annotationType()*.name).contains('groovy.transform.Generated')

        method = objectUnderTest.class.declaredMethods.find { it.name == 'methodD'}
        assert !(method.annotations*.annotationType()*.name).contains('groovy.transform.Generated')
    }
}
