/*
* Copyright 2017-present Facebook, 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.facebook.buck.rules.keys;
import static org.junit.Assert.assertEquals;
import com.google.common.hash.HashCode;
import com.google.common.hash.Hashing;
import org.junit.Test;
public class RuleKeyScopedHasherTest {
@Test
public void testKeyScope() {
CountingRuleKeyHasher<HashCode> countHasher = newCountHasher();
RuleKeyScopedHasher<HashCode> containerHasher = new RuleKeyScopedHasher<>(countHasher);
try (RuleKeyScopedHasher.Scope keyScope = containerHasher.keyScope("key")) {
countHasher.putString("val");
}
assertEquals(newGuavaHasher().putString("val").putKey("key").hash(), countHasher.hash());
}
@Test
public void testKeyScopeNoOp() {
CountingRuleKeyHasher<HashCode> countHasher = newCountHasher();
RuleKeyScopedHasher<HashCode> containerHasher = new RuleKeyScopedHasher<>(countHasher);
try (RuleKeyScopedHasher.Scope keyScope = containerHasher.keyScope("key")) { // NOPMD
// no-op
}
assertEquals(newGuavaHasher().hash(), countHasher.hash());
}
@Test
public void testWrapperScope() {
testWrapperScopeAndNoOp(RuleKeyHasher.Wrapper.SUPPLIER);
testWrapperScopeAndNoOp(RuleKeyHasher.Wrapper.OPTIONAL);
testWrapperScopeAndNoOp(RuleKeyHasher.Wrapper.EITHER_LEFT);
testWrapperScopeAndNoOp(RuleKeyHasher.Wrapper.EITHER_RIGHT);
testWrapperScopeAndNoOp(RuleKeyHasher.Wrapper.BUILD_RULE);
testWrapperScopeAndNoOp(RuleKeyHasher.Wrapper.APPENDABLE);
}
private void testWrapperScopeAndNoOp(RuleKeyHasher.Wrapper wrapper) {
testWrapperScope(wrapper);
testWrapperScopeNoOp(wrapper);
}
private void testWrapperScope(RuleKeyHasher.Wrapper wrapper) {
CountingRuleKeyHasher<HashCode> countHasher = newCountHasher();
RuleKeyScopedHasher<HashCode> containerHasher = new RuleKeyScopedHasher<>(countHasher);
try (RuleKeyScopedHasher.Scope wrapperScope = containerHasher.wrapperScope(wrapper)) {
countHasher.putString("val");
}
assertEquals(newGuavaHasher().putString("val").putWrapper(wrapper).hash(), countHasher.hash());
}
private void testWrapperScopeNoOp(RuleKeyHasher.Wrapper wrapper) {
CountingRuleKeyHasher<HashCode> countHasher = newCountHasher();
RuleKeyScopedHasher<HashCode> containerHasher = new RuleKeyScopedHasher<>(countHasher);
try (RuleKeyScopedHasher.Scope wrapperScope = containerHasher.wrapperScope(wrapper)) { // NOPMD
// no-op
}
assertEquals(newGuavaHasher().hash(), countHasher.hash());
}
@Test
public void testContainerScopeList() {
CountingRuleKeyHasher<HashCode> countHasher = newCountHasher();
RuleKeyScopedHasher<HashCode> containerHasher = new RuleKeyScopedHasher<>(countHasher);
try (RuleKeyScopedHasher.ContainerScope containerScope =
containerHasher.containerScope(RuleKeyHasher.Container.LIST)) {
try (RuleKeyScopedHasher.Scope elementScope = containerScope.elementScope()) {
countHasher.putString("val1");
}
try (RuleKeyScopedHasher.Scope elementScope = containerScope.elementScope()) {
countHasher.putString("val2");
}
try (RuleKeyScopedHasher.Scope elementScope = containerScope.elementScope()) {
countHasher.putString("val3");
}
}
assertEquals(
newGuavaHasher()
.putString("val1")
.putString("val2")
.putString("val3")
.putContainer(RuleKeyHasher.Container.LIST, 3)
.hash(),
countHasher.hash());
}
@Test
public void testContainerScopeListNoOp() {
CountingRuleKeyHasher<HashCode> countHasher = newCountHasher();
RuleKeyScopedHasher<HashCode> containerHasher = new RuleKeyScopedHasher<>(countHasher);
try (RuleKeyScopedHasher.ContainerScope containerScope =
containerHasher.containerScope(RuleKeyHasher.Container.LIST)) { // NOPMD
// no-op
}
assertEquals(newGuavaHasher().hash(), countHasher.hash());
}
@Test
public void testContainerScopeMap() {
CountingRuleKeyHasher<HashCode> countHasher = newCountHasher();
RuleKeyScopedHasher<HashCode> containerHasher = new RuleKeyScopedHasher<>(countHasher);
try (RuleKeyScopedHasher.ContainerScope containerScope =
containerHasher.containerScope(RuleKeyHasher.Container.MAP)) {
try (RuleKeyScopedHasher.Scope elementScope = containerScope.elementScope()) {
countHasher.putString("key1");
}
try (RuleKeyScopedHasher.Scope elementScope = containerScope.elementScope()) {
countHasher.putString("val1");
}
try (RuleKeyScopedHasher.Scope elementScope = containerScope.elementScope()) {
countHasher.putString("key2");
}
try (RuleKeyScopedHasher.Scope elementScope = containerScope.elementScope()) {
countHasher.putString("val2");
}
}
assertEquals(
newGuavaHasher()
.putString("key1")
.putString("val1")
.putString("key2")
.putString("val2")
.putContainer(RuleKeyHasher.Container.MAP, 4)
.hash(),
countHasher.hash());
}
@Test
public void testContainerScopeMapNoOp() {
CountingRuleKeyHasher<HashCode> countHasher = newCountHasher();
RuleKeyScopedHasher<HashCode> containerHasher = new RuleKeyScopedHasher<>(countHasher);
try (RuleKeyScopedHasher.ContainerScope containerScope =
containerHasher.containerScope(RuleKeyHasher.Container.MAP)) { // NOPMD
// no-op
}
assertEquals(newGuavaHasher().hash(), countHasher.hash());
}
private CountingRuleKeyHasher<HashCode> newCountHasher() {
return new CountingRuleKeyHasher<>(newGuavaHasher());
}
private GuavaRuleKeyHasher newGuavaHasher() {
return new GuavaRuleKeyHasher(Hashing.sha1().newHasher());
}
}