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Commit 891cd578 authored by Thiébaud Weksteen's avatar Thiébaud Weksteen
Browse files

rust: validate existence of library source 

While rust_bindgen modules may be interpreted as libraries, they do not
have a reference to the generated source until bindgen has been
executed. For now, ignore these modules.

Update the unit tests to cover the rust_bindgen case.

Test: SOONG_GEN_RUST_PROJECT=1 m nothing
Bug: 162881856
Change-Id: Ie736d7ebb115f2c1f9a90be006c972ce24265c6a
parent da931d4a

rust/project_json.go

+5 −3
Original line number Diff line number Diff line
@@ -75,7 +75,6 @@ func mergeDependencies(ctx android.SingletonContext, project *rustProjectJson, 
	knownCrates map[string]crateInfo, module android.Module,

	crate *rustProjectCrate, deps map[string]int) {



	//TODO(tweek): The stdlib dependencies do not appear here. We need to manually add them.

	ctx.VisitDirectDeps(module, func(child android.Module) {

		childId, childName, ok := appendLibraryAndDeps(ctx, project, knownCrates, child)

		if !ok {
@@ -115,8 +114,11 @@ func appendLibraryAndDeps(ctx android.SingletonContext, project *rustProjectJson 
		return cInfo.ID, crateName, true

	}

	crate := rustProjectCrate{Deps: make([]rustProjectDep, 0), Cfgs: make([]string, 0)}

	src := rustLib.baseCompiler.Properties.Srcs[0]

	crate.RootModule = path.Join(ctx.ModuleDir(rModule), src)

	srcs := rustLib.baseCompiler.Properties.Srcs

	if len(srcs) == 0 {

		return 0, "", false

	}

	crate.RootModule = path.Join(ctx.ModuleDir(rModule), srcs[0])

	crate.Edition = rustLib.baseCompiler.edition()



	deps := make(map[string]int)

rust/project_json_test.go

+77 −13
Original line number Diff line number Diff line
@@ -15,6 +15,7 @@ 
package rust



import (

	"encoding/json"

	"io/ioutil"

	"path/filepath"

	"testing"
@@ -23,20 +24,12 @@ import ( 
	"android/soong/cc"

)



func TestProjectJson(t *testing.T) {

	bp := `rust_library {

		  name: "liba",

		  srcs: ["src/lib.rs"],

		  crate_name: "a"

		}` + GatherRequiredDepsForTest()

	env := map[string]string{"SOONG_GEN_RUST_PROJECT": "1"}

	fs := map[string][]byte{

		"foo.rs":     nil,

		"src/lib.rs": nil,

	}



// 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)
@@ -48,8 +41,79 @@ func TestProjectJson(t *testing.T) { 
	// The JSON file is generated via WriteFileToOutputDir. Therefore, it

	// won't appear in the Output of the TestingSingleton. Manually verify

	// it exists.

	_, err := ioutil.ReadFile(filepath.Join(buildDir, "rust-project.json"))

	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)

}