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// 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 rust
import (
"encoding/json"
"io/ioutil"
"path/filepath"
"testing"
"android/soong/android"
"android/soong/cc"
)
// testProjectJson run the generation of rust-project.json. It returns the raw
// content of the generated file.
func testProjectJson(t *testing.T, bp string, fs map[string][]byte) []byte {
cc.GatherRequiredFilesForTest(fs)
env := map[string]string{"SOONG_GEN_RUST_PROJECT": "1"}
config := android.TestArchConfig(buildDir, env, bp, fs)
ctx := CreateTestContext()
ctx.Register(config)
_, errs := ctx.ParseFileList(".", []string{"Android.bp"})
android.FailIfErrored(t, errs)
_, errs = ctx.PrepareBuildActions(config)
android.FailIfErrored(t, errs)
// The JSON file is generated via WriteFileToOutputDir. Therefore, it
// won't appear in the Output of the TestingSingleton. Manually verify
// it exists.
content, err := ioutil.ReadFile(filepath.Join(buildDir, rustProjectJsonFileName))
if err != nil {
t.Errorf("rust-project.json has not been generated")
}
return content
}
// validateJsonCrates validates that content follows the basic structure of
// rust-project.json. It returns the crates attribute if the validation
// succeeded.
// It uses an empty interface instead of relying on a defined structure to
// avoid a strong dependency on our implementation.
func validateJsonCrates(t *testing.T, rawContent []byte) []interface{} {
var content interface{}
err := json.Unmarshal(rawContent, &content)
if err != nil {
t.Errorf("Unable to parse the rust-project.json as JSON: %v", err)
}
root, ok := content.(map[string]interface{})
if !ok {
t.Errorf("Unexpected JSON format: %v", content)
}
if _, ok = root["crates"]; !ok {
t.Errorf("No crates attribute in rust-project.json: %v", root)
}
crates, ok := root["crates"].([]interface{})
if !ok {
t.Errorf("Unexpected crates format: %v", root["crates"])
}
return crates
}
func TestProjectJsonDep(t *testing.T) {
bp := `
rust_library {
name: "liba",
srcs: ["a/src/lib.rs"],
crate_name: "a"
}
rust_library {
name: "libb",
srcs: ["b/src/lib.rs"],
crate_name: "b",
rlibs: ["liba"],
}
` + GatherRequiredDepsForTest()
fs := map[string][]byte{
"a/src/lib.rs": nil,
"b/src/lib.rs": nil,
}
jsonContent := testProjectJson(t, bp, fs)
validateJsonCrates(t, jsonContent)
}
func TestProjectJsonBindGen(t *testing.T) {
bp := `
rust_library {
name: "liba",
srcs: ["src/lib.rs"],
rlibs: ["libbindings"],
crate_name: "a"
}
rust_bindgen {
name: "libbindings",
crate_name: "bindings",
source_stem: "bindings",
host_supported: true,
wrapper_src: "src/any.h",
}
` + GatherRequiredDepsForTest()
fs := map[string][]byte{
"src/lib.rs": nil,
}
jsonContent := testProjectJson(t, bp, fs)
validateJsonCrates(t, jsonContent)
}
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