src/test/groovy/bugs/Groovy8439.groovy

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 *  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,
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 *  "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 groovy.bugs

import groovy.transform.CompileStatic
import org.junit.Test

import static groovy.test.GroovyAssert.assertScript

@CompileStatic
final class Groovy8439 {

    @Test
    void testSTCGenerics() {
        assertScript '''
            @groovy.transform.CompileStatic
            class Test<T extends Task> {
                static def something(Task task, Collection<BaseVariant> variants) {
                    variants.collectMany { it.sourceFolders }.collect { ConfigurableFileTree tree ->
                        task.getBuildDir().toPath().relativize(tree.dir.toPath()).toString() + File.separator
                    }
                }
            }

            interface BaseVariant {
                List<ConfigurableFileTree> getSourceFolders()
            }

            interface ConfigurableFileTree {
                File getDir()
            }

            interface Task {
                File getBuildDir()
            }

            Test.something(null, [])
        '''
    }
}