/*
* Copyright 2015-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.rust;
import static org.junit.Assert.assertThat;
import com.facebook.buck.cxx.Linker;
import com.facebook.buck.io.FileScrubber;
import com.facebook.buck.model.BuildTarget;
import com.facebook.buck.model.BuildTargetFactory;
import com.facebook.buck.rules.BuildRule;
import com.facebook.buck.rules.BuildRuleParams;
import com.facebook.buck.rules.BuildRuleResolver;
import com.facebook.buck.rules.DefaultTargetNodeToBuildRuleTransformer;
import com.facebook.buck.rules.FakeBuildRuleParamsBuilder;
import com.facebook.buck.rules.FakeSourcePath;
import com.facebook.buck.rules.RuleKeyObjectSink;
import com.facebook.buck.rules.SourcePath;
import com.facebook.buck.rules.SourcePathResolver;
import com.facebook.buck.rules.SourcePathRuleFinder;
import com.facebook.buck.rules.TargetGraph;
import com.facebook.buck.rules.Tool;
import com.facebook.buck.rules.args.Arg;
import com.facebook.buck.rules.args.StringArg;
import com.facebook.buck.util.HumanReadableException;
import com.facebook.buck.util.MoreCollectors;
import com.google.common.collect.ImmutableCollection;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.ImmutableSortedSet;
import java.nio.file.Path;
import java.util.Optional;
import java.util.stream.Stream;
import org.hamcrest.Matchers;
import org.junit.Test;
public class RustCompileTest {
@Test(expected = HumanReadableException.class)
public void noCrateRootInSrcs() {
RustCompileRule linkable = FakeRustCompileRule.from("//:donotcare", ImmutableSortedSet.of());
linkable.getCrateRoot();
}
@Test
public void crateRootMainInSrcs() {
RustCompileRule linkable =
FakeRustCompileRule.from(
"//:donotcare", ImmutableSortedSet.of(new FakeSourcePath("main.rs")));
assertThat(linkable.getCrateRoot().toString(), Matchers.endsWith("main.rs"));
}
@Test
public void crateRootTargetNameInSrcs() {
RustCompileRule linkable =
FakeRustCompileRule.from(
"//:myname", ImmutableSortedSet.of(new FakeSourcePath("myname.rs")));
assertThat(linkable.getCrateRoot().toString(), Matchers.endsWith("myname.rs"));
}
// Test that there's only one valid candidate root source file.
@Test(expected = HumanReadableException.class)
public void crateRootMainAndTargetNameInSrcs() {
RustCompileRule linkable =
FakeRustCompileRule.from(
"//:myname",
ImmutableSortedSet.of(new FakeSourcePath("main.rs"), new FakeSourcePath("myname.rs")));
linkable.getCrateRoot();
}
private static Tool fakeTool() {
return new Tool() {
@Override
public ImmutableCollection<BuildRule> getDeps(SourcePathRuleFinder ruleFinder) {
return ImmutableSortedSet.of();
}
@Override
public ImmutableCollection<SourcePath> getInputs() {
return ImmutableSortedSet.of();
}
@Override
public ImmutableList<String> getCommandPrefix(SourcePathResolver resolver) {
return ImmutableList.of();
}
@Override
public ImmutableMap<String, String> getEnvironment(SourcePathResolver resolver) {
return ImmutableMap.of();
}
@Override
public void appendToRuleKey(RuleKeyObjectSink sink) {
// Do nothing.
}
};
}
private static Linker fakeLinker() {
return new Linker() {
@Override
public ImmutableList<FileScrubber> getScrubbers(ImmutableCollection<Path> cellRoots) {
return null;
}
@Override
public Iterable<Arg> linkWhole(Arg input) {
return null;
}
@Override
public Iterable<String> soname(String soname) {
return null;
}
@Override
public Iterable<Arg> fileList(Path fileListPath) {
return null;
}
@Override
public String origin() {
return null;
}
@Override
public String libOrigin() {
return null;
}
@Override
public String searchPathEnvVar() {
return null;
}
@Override
public String preloadEnvVar() {
return null;
}
@Override
public Iterable<String> getNoAsNeededSharedLibsFlags() {
return null;
}
@Override
public Iterable<String> getIgnoreUndefinedSymbolsFlags() {
return null;
}
@Override
public ImmutableList<Arg> createUndefinedSymbolsLinkerArgs(
BuildRuleParams baseParams,
BuildRuleResolver ruleResolver,
SourcePathRuleFinder ruleFinder,
BuildTarget target,
Iterable<? extends SourcePath> symbolFiles) {
return null;
}
@Override
public Iterable<Arg> getSharedLibFlag() {
return null;
}
@Override
public Iterable<String> outputArgs(String path) {
return null;
}
@Override
public boolean hasFilePathSizeLimitations() {
return false;
}
@Override
public ImmutableCollection<BuildRule> getDeps(SourcePathRuleFinder ruleFinder) {
return ImmutableSortedSet.of();
}
@Override
public ImmutableCollection<SourcePath> getInputs() {
return ImmutableSortedSet.of();
}
@Override
public ImmutableList<String> getCommandPrefix(SourcePathResolver resolver) {
return ImmutableList.of();
}
@Override
public ImmutableMap<String, String> getEnvironment(SourcePathResolver resolver) {
return ImmutableMap.of();
}
@Override
public void appendToRuleKey(RuleKeyObjectSink sink) {
// Do nothing.
}
};
}
static class FakeRustCompileRule extends RustCompileRule {
private FakeRustCompileRule(
BuildTarget target, ImmutableSortedSet<SourcePath> srcs, SourcePath rootModule) {
super(
new FakeBuildRuleParamsBuilder(target).build(),
String.format("lib%s.rlib", target),
fakeTool(),
fakeLinker(),
Stream.of("--crate-name", target.getShortName(), "--crate-type", "rlib")
.map(StringArg::of)
.collect(MoreCollectors.toImmutableList()),
/* depArgs */ ImmutableList.of(),
/* linkerFlags */
ImmutableList.of(),
srcs,
rootModule,
true);
}
static FakeRustCompileRule from(String target, ImmutableSortedSet<SourcePath> srcs) {
BuildTarget buildTarget = BuildTargetFactory.newInstance(target);
SourcePathRuleFinder ruleFinder =
new SourcePathRuleFinder(
new BuildRuleResolver(
TargetGraph.EMPTY, new DefaultTargetNodeToBuildRuleTransformer()));
SourcePathResolver pathResolver = new SourcePathResolver(ruleFinder);
Optional<SourcePath> root =
RustCompileUtils.getCrateRoot(
pathResolver,
buildTarget.getShortName(),
ImmutableSet.of("main.rs", "lib.rs"),
srcs.stream());
if (!root.isPresent()) {
throw new HumanReadableException("No crate root source identified");
}
return new FakeRustCompileRule(buildTarget, srcs, root.get());
}
}
}