diff options
author | 2017-09-13 20:37:20 +0200 | |
---|---|---|
committer | 2017-09-14 18:46:20 +0200 | |
commit | d60e0d02eb56e27f98086d764c6d9f88898d920d (patch) | |
tree | a13381d9a784f9dda1f02beee23a79142d8cd072 /src/test/java/com/google/devtools/build/android/desugar/testdata/java8/GenericDefaultInterfaceWithLambda.java | |
parent | a615d288b008c36c659fdc17965207bb62d95d8d (diff) |
Open source tests for Android desugarer.
These tests will fail with a helpful error message if you do not have android_sdk_repository set up. They currently require that platform 25 be installed in your SDK.
RELNOTES: None
PiperOrigin-RevId: 168570577
Diffstat (limited to 'src/test/java/com/google/devtools/build/android/desugar/testdata/java8/GenericDefaultInterfaceWithLambda.java')
-rw-r--r-- | src/test/java/com/google/devtools/build/android/desugar/testdata/java8/GenericDefaultInterfaceWithLambda.java | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/src/test/java/com/google/devtools/build/android/desugar/testdata/java8/GenericDefaultInterfaceWithLambda.java b/src/test/java/com/google/devtools/build/android/desugar/testdata/java8/GenericDefaultInterfaceWithLambda.java new file mode 100644 index 0000000000..58396794bf --- /dev/null +++ b/src/test/java/com/google/devtools/build/android/desugar/testdata/java8/GenericDefaultInterfaceWithLambda.java @@ -0,0 +1,97 @@ +// Copyright 2017 The Bazel Authors. All rights reserved. +// +// 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.devtools.build.android.desugar.testdata.java8; + +import java.util.ArrayList; +import java.util.List; +import java.util.function.Function; +import java.util.stream.Collectors; + +/** An interface with default methods, lambdas, and generics */ +public interface GenericDefaultInterfaceWithLambda<T> { + + T getBaseValue(); + + T increment(T value); + + String toString(T value); + + public default ArrayList<T> toList(int bound) { + ArrayList<T> result = new ArrayList<>(); + if (bound == 0) { + return result; + } + result.add(getBaseValue()); + for (int i = 1; i < bound; ++i) { + result.add(increment(result.get(i - 1))); + } + return result; + } + + public default List<String> convertToStringList(List<T> list) { + return list.stream().map(this::toString).collect(Collectors.toList()); + } + + public default Function<Integer, ArrayList<T>> toListSupplier() { + return this::toList; + } + + /** The type parameter is concretized to {@link Number} */ + interface LevelOne<T extends Number> extends GenericDefaultInterfaceWithLambda<T> {} + + /** The type parameter is instantiated to {@link Integer} */ + interface LevelTwo extends LevelOne<Integer> { + + @Override + default Integer getBaseValue() { + return 0; + } + } + + /** An abstract class with no implementing methods. */ + abstract static class ClassOne implements LevelTwo {} + + /** A class for {@link Integer} */ + class ClassTwo extends ClassOne { + + @Override + public Integer increment(Integer value) { + return value + 1; + } + + @Override + public String toString(Integer value) { + return value.toString(); + } + } + + /** A class fo {@link Long} */ + class ClassThree implements LevelOne<Long> { + + @Override + public Long getBaseValue() { + return Long.valueOf(0); + } + + @Override + public Long increment(Long value) { + return value + 1; + } + + @Override + public String toString(Long value) { + return value.toString(); + } + } +} |