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Diffstat (limited to 'src/test/java/com/google/escapevelocity/ReferenceNodeTest.java')
-rw-r--r-- | src/test/java/com/google/escapevelocity/ReferenceNodeTest.java | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/src/test/java/com/google/escapevelocity/ReferenceNodeTest.java b/src/test/java/com/google/escapevelocity/ReferenceNodeTest.java new file mode 100644 index 0000000..b1759bd --- /dev/null +++ b/src/test/java/com/google/escapevelocity/ReferenceNodeTest.java @@ -0,0 +1,94 @@ +/* + * Copyright (C) 2018 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.escapevelocity; + +import static com.google.common.truth.Truth.assertThat; + +import com.google.common.collect.ImmutableList; +import com.google.common.collect.ImmutableSet; +import com.google.common.primitives.Primitives; +import com.google.common.truth.Expect; +import com.google.escapevelocity.ReferenceNode.MethodReferenceNode; +import org.junit.Rule; +import org.junit.Test; +import org.junit.runner.RunWith; +import org.junit.runners.JUnit4; + +/** + * Tests for {@link ReferenceNode}. + * + * @author emcmanus@google.com (Éamonn McManus) + */ +@RunWith(JUnit4.class) +public class ReferenceNodeTest { + @Rule public Expect expect = Expect.create(); + + // This is the exhaustive list from + // https://docs.oracle.com/javase/specs/jls/se8/html/jls-5.html#jls-5.1.2. + // We put the "from" type first for consistency with that list, even though that is inconsistent + // with our method order (which is itself consistent with assignment, "to" on the left). + private static final ImmutableSet<ImmutableList<Class<?>>> ASSIGNMENT_COMPATIBLE = + makeAssignmentCompatibleSet(); + private static ImmutableSet<ImmutableList<Class<?>>> makeAssignmentCompatibleSet() { + Class<?>[][] pairs = { + {byte.class, short.class}, + {byte.class, int.class}, + {byte.class, long.class}, + {byte.class, float.class}, + {byte.class, double.class}, + {short.class, int.class}, + {short.class, long.class}, + {short.class, float.class}, + {short.class, double.class}, + {char.class, int.class}, + {char.class, long.class}, + {char.class, float.class}, + {char.class, double.class}, + {int.class, long.class}, + {int.class, float.class}, + {int.class, double.class}, + {long.class, float.class}, + {long.class, double.class}, + {float.class, double.class}, + }; + ImmutableSet.Builder<ImmutableList<Class<?>>> builder = ImmutableSet.builder(); + for (Class<?>[] pair : pairs) { + builder.add(ImmutableList.copyOf(pair)); + } + return builder.build(); + } + + @Test + public void testPrimitiveTypeIsAssignmentCompatible() { + for (Class<?> from : Primitives.allPrimitiveTypes()) { + for (Class<?> to : Primitives.allPrimitiveTypes()) { + boolean expected = + (from == to || ASSIGNMENT_COMPATIBLE.contains(ImmutableList.of(from, to))); + boolean actual = + MethodReferenceNode.primitiveTypeIsAssignmentCompatible(to, from); + expect + .withMessage(from + " assignable to " + to) + .that(actual).isEqualTo(expected); + } + } + } + + @Test + public void testCompatibleArgs() { + assertThat(MethodReferenceNode.compatibleArgs( + new Class<?>[]{int.class}, ImmutableList.of((Object) 5))).isTrue(); + } +} |