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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"
"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 {
tctx := newTestRustCtx(t, bp)
tctx.env = map[string]string{"SOONG_GEN_RUST_PROJECT": "1"}
tctx.generateConfig()
tctx.parse(t)
// 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"],
}
`
jsonContent := testProjectJson(t, bp)
validateJsonCrates(t, jsonContent)
}
func TestProjectJsonBindGen(t *testing.T) {
bp := `
rust_library {
name: "liba",
srcs: ["src/lib.rs"],
rlibs: ["libbindings1"],
crate_name: "a"
}
rust_bindgen {
name: "libbindings1",
crate_name: "bindings1",
source_stem: "bindings1",
host_supported: true,
wrapper_src: "src/any.h",
}
rust_library_host {
name: "libb",
srcs: ["src/lib.rs"],
rustlibs: ["libbindings2"],
crate_name: "b"
}
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, ok := c.(map[string]interface{})
if !ok {
t.Fatalf("Unexpected type for crate: %v", 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())
}
}
}
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 _, crate := range crates {
c := crate.(map[string]interface{})
if c["root_module"] == "b/src/lib.rs" {
deps, ok := c["deps"].([]interface{})
if !ok {
t.Errorf("Unexpected format for deps: %v", c["deps"])
}
aCount := 0
for _, dep := range deps {
d, ok := dep.(map[string]interface{})
if !ok {
t.Errorf("Unexpected format for dep: %v", dep)
}
if d["name"] == "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)
}
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