@Test
public void ruleKeyChangesIfInputContentsFromPathSourceChanges() throws Exception {
BuildRuleResolver resolver =
new BuildRuleResolver(TargetGraph.EMPTY, new DefaultTargetNodeToBuildRuleTransformer());
SourcePathResolver pathResolver = new SourcePathResolver(resolver);
FakeProjectFilesystem filesystem = new FakeProjectFilesystem();
Path output = Paths.get("output");
BuildRule rule =
ExportFileBuilder.newExportFileBuilder(BuildTargetFactory.newInstance("//:rule"))
.setOut("out")
.setSrc(new PathSourcePath(filesystem, output))
.build(resolver, filesystem);
// Build a rule key with a particular hash set for the output for the above rule.
FakeFileHashCache hashCache =
new FakeFileHashCache(ImmutableMap.of(filesystem.resolve(output), HashCode.fromInt(0)));
RuleKey inputKey1 = new InputBasedRuleKeyBuilderFactory(0, hashCache, pathResolver).build(rule);
// Now, build a rule key with a different hash for the output for the above rule.
hashCache =
new FakeFileHashCache(ImmutableMap.of(filesystem.resolve(output), HashCode.fromInt(1)));
RuleKey inputKey2 = new InputBasedRuleKeyBuilderFactory(0, hashCache, pathResolver).build(rule);
assertThat(inputKey1, Matchers.not(Matchers.equalTo(inputKey2)));
}
