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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"
"sort"
"strings"
"testing"
"android/soong/android"
)
// testProjectJson run the generation of rust-project.json. It returns the raw
// content of the generated file.
func testProjectJson(t *testing.T, bp string) []byte {
result := android.GroupFixturePreparers(
prepareForRustTest,
android.FixtureMergeEnv(map[string]string{"SOONG_GEN_RUST_PROJECT": "1"}),
).RunTestWithBp(t, bp)
// 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(result.Config.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
}
// validateCrate ensures that a crate can be parsed as a map.
func validateCrate(t *testing.T, crate interface{}) map[string]interface{} {
c, ok := crate.(map[string]interface{})
if !ok {
t.Fatalf("Unexpected type for crate: %v", c)
}
return c
}
// validateDependencies parses the dependencies for a crate. It returns a list
// of the dependencies name.
func validateDependencies(t *testing.T, crate map[string]interface{}) []string {
var dependencies []string
deps, ok := crate["deps"].([]interface{})
if !ok {
t.Errorf("Unexpected format for deps: %v", crate["deps"])
}
for _, dep := range deps {
d, ok := dep.(map[string]interface{})
if !ok {
t.Errorf("Unexpected format for dependency: %v", dep)
}
name, ok := d["name"].(string)
if !ok {
t.Errorf("Dependency is missing the name key: %v", d)
}
dependencies = append(dependencies, name)
}
return dependencies
}
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"],
}
`
jsonContent := testProjectJson(t, bp)
validateJsonCrates(t, jsonContent)
}
func TestProjectJsonFeature(t *testing.T) {
bp := `
rust_library {
name: "liba",
srcs: ["a/src/lib.rs"],
crate_name: "a",
features: ["f1", "f2"]
}
`
jsonContent := testProjectJson(t, bp)
crates := validateJsonCrates(t, jsonContent)
for _, c := range crates {
crate := validateCrate(t, c)
cfgs, ok := crate["cfg"].([]interface{})
if !ok {
t.Fatalf("Unexpected type for cfgs: %v", crate)
}
expectedCfgs := []string{"feature=\"f1\"", "feature=\"f2\""}
foundCfgs := []string{}
for _, cfg := range cfgs {
cfg, ok := cfg.(string)
if !ok {
t.Fatalf("Unexpected type for cfg: %v", cfg)
}
foundCfgs = append(foundCfgs, cfg)
}
sort.Strings(foundCfgs)
for i, foundCfg := range foundCfgs {
if foundCfg != expectedCfgs[i] {
t.Errorf("Incorrect features: got %v; want %v", foundCfg, expectedCfgs[i])
}
}
}
}
func TestProjectJsonBinary(t *testing.T) {
bp := `
rust_binary {
name: "libz",
srcs: ["z/src/lib.rs"],
crate_name: "z"
}
`
jsonContent := testProjectJson(t, bp)
crates := validateJsonCrates(t, jsonContent)
for _, c := range crates {
crate := validateCrate(t, c)
rootModule, ok := crate["root_module"].(string)
if !ok {
t.Fatalf("Unexpected type for root_module: %v", crate["root_module"])
}
if rootModule == "z/src/lib.rs" {
return
}
}
t.Errorf("Entry for binary %q not found: %s", "a", jsonContent)
}
func TestProjectJsonBindGen(t *testing.T) {
bp := `
rust_library {
name: "libd",
srcs: ["d/src/lib.rs"],
rlibs: ["libbindings1"],
crate_name: "d"
}
rust_bindgen {
name: "libbindings1",
crate_name: "bindings1",
source_stem: "bindings1",
host_supported: true,
wrapper_src: "src/any.h",
}
rust_library_host {
name: "libe",
srcs: ["e/src/lib.rs"],
rustlibs: ["libbindings2"],
crate_name: "e"
}
rust_bindgen_host {
name: "libbindings2",
crate_name: "bindings2",
source_stem: "bindings2",
wrapper_src: "src/any.h",
}
`
jsonContent := testProjectJson(t, bp)
crates := validateJsonCrates(t, jsonContent)
for _, c := range crates {
crate := validateCrate(t, c)
rootModule, ok := crate["root_module"].(string)
if !ok {
t.Fatalf("Unexpected type for root_module: %v", crate["root_module"])
}
if strings.Contains(rootModule, "libbindings1") && !strings.Contains(rootModule, "android_arm64") {
t.Errorf("The source path for libbindings1 does not contain android_arm64, got %v", rootModule)
}
if strings.Contains(rootModule, "libbindings2") && !strings.Contains(rootModule, android.BuildOs.String()) {
t.Errorf("The source path for libbindings2 does not contain the BuildOs, got %v; want %v",
rootModule, android.BuildOs.String())
}
// Check that libbindings1 does not depend on itself.
if strings.Contains(rootModule, "libbindings1") {
for _, depName := range validateDependencies(t, crate) {
if depName == "bindings1" {
t.Errorf("libbindings1 depends on itself")
}
}
}
if strings.Contains(rootModule, "d/src/lib.rs") {
// Check that libd depends on libbindings1
found := false
for _, depName := range validateDependencies(t, crate) {
if depName == "bindings1" {
found = true
break
}
}
if !found {
t.Errorf("libd does not depend on libbindings1: %v", crate)
}
// Check that OUT_DIR is populated.
env, ok := crate["env"].(map[string]interface{})
if !ok {
t.Errorf("libd does not have its environment variables set: %v", crate)
}
if _, ok = env["OUT_DIR"]; !ok {
t.Errorf("libd does not have its OUT_DIR set: %v", env)
}
}
}
}
func TestProjectJsonMultiVersion(t *testing.T) {
bp := `
rust_library {
name: "liba1",
srcs: ["a1/src/lib.rs"],
crate_name: "a"
}
rust_library {
name: "liba2",
srcs: ["a2/src/lib.rs"],
crate_name: "a",
}
rust_library {
name: "libb",
srcs: ["b/src/lib.rs"],
crate_name: "b",
rustlibs: ["liba1", "liba2"],
}
`
jsonContent := testProjectJson(t, bp)
crates := validateJsonCrates(t, jsonContent)
for _, c := range crates {
crate := validateCrate(t, c)
rootModule, ok := crate["root_module"].(string)
if !ok {
t.Fatalf("Unexpected type for root_module: %v", crate["root_module"])
}
// Make sure that b has 2 different dependencies.
if rootModule == "b/src/lib.rs" {
aCount := 0
deps := validateDependencies(t, crate)
for _, depName := range deps {
if depName == "a" {
aCount++
}
}
if aCount != 2 {
t.Errorf("Unexpected number of liba dependencies want %v, got %v: %v", 2, aCount, deps)
}
return
}
}
t.Errorf("libb crate has not been found: %v", crates)
}