platform_build_soong/bp2build/conversion_test.go
Jingwen Chen 40067de675 bp2build: support Starlark rules and load statements.
This CL adds support to bp2build for declaring the location of the
Starlark rule definition when creating BazelTargetModules. This is
needed for non-native rules that needs to be loaded from .bzl files
somewhere in the tree.

Since load statements are aggregated at the top of the BUILD file, away
from the targets that actually use them, this CL also introduces an
abstraction to group BazelTargets together and compute their load
statements and target string representations separately, allowing load
statements to be decoupled and written into a BUILD file before the
targets themselves.

Test: soong tests
Test: TH
Test: GENERATE_BAZEL_FILES=true m nothing && build/bazel/scripts/bp2build-sync.sh write && bazel cquery //bionic/...
Fixes: 178531760

Test: TH
Change-Id: Ie5f793a00006eb024eaef07ddd9fde7aaefc054e
2021-01-26 22:46:20 -05:00

107 lines
2.7 KiB
Go

// Copyright 2020 Google Inc. 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 bp2build
import (
"sort"
"testing"
)
type filepath struct {
dir string
basename string
}
func assertFilecountsAreEqual(t *testing.T, actual []BazelFile, expected []filepath) {
if a, e := len(actual), len(expected); a != e {
t.Errorf("Expected %d files, got %d", e, a)
}
}
func assertFileContent(t *testing.T, actual []BazelFile, expected []filepath) {
for i := range actual {
if g, w := actual[i], expected[i]; g.Dir != w.dir || g.Basename != w.basename {
t.Errorf("Did not find expected file %s/%s", g.Dir, g.Basename)
} else if g.Basename == "BUILD" || g.Basename == "WORKSPACE" {
if g.Contents != "" {
t.Errorf("Expected %s to have no content.", g)
}
} else if g.Contents == "" {
t.Errorf("Contents of %s unexpected empty.", g)
}
}
}
func sortFiles(files []BazelFile) {
sort.Slice(files, func(i, j int) bool {
if dir1, dir2 := files[i].Dir, files[j].Dir; dir1 == dir2 {
return files[i].Basename < files[j].Basename
} else {
return dir1 < dir2
}
})
}
func TestCreateBazelFiles_QueryView_AddsTopLevelFiles(t *testing.T) {
files := CreateBazelFiles(map[string]RuleShim{}, map[string]BazelTargets{}, QueryView)
expectedFilePaths := []filepath{
{
dir: "",
basename: "BUILD",
},
{
dir: "",
basename: "WORKSPACE",
},
{
dir: bazelRulesSubDir,
basename: "BUILD",
},
{
dir: bazelRulesSubDir,
basename: "providers.bzl",
},
{
dir: bazelRulesSubDir,
basename: "soong_module.bzl",
},
}
assertFilecountsAreEqual(t, files, expectedFilePaths)
sortFiles(files)
assertFileContent(t, files, expectedFilePaths)
}
func TestCreateBazelFiles_Bp2Build_AddsTopLevelFiles(t *testing.T) {
files := CreateBazelFiles(map[string]RuleShim{}, map[string]BazelTargets{}, Bp2Build)
expectedFilePaths := []filepath{
{
dir: "",
basename: "BUILD",
},
{
dir: "",
basename: "WORKSPACE",
},
{
dir: bazelRulesSubDir,
basename: "BUILD",
},
}
assertFilecountsAreEqual(t, files, expectedFilePaths)
sortFiles(files)
assertFileContent(t, files, expectedFilePaths)
}