Add rust_test and rust_test_host.
* Rust tests are like binary files compiled with --test.
New test.go follows binary.go code patterns and reuses
some code in binary.go.
* Generate one test per source file as testPerSrc in cc/test.go.
The "all tests" variation feature of cc/test.go is not copied yet.
Fix some Stem and SubName settings to make testPerSrc work.
* Move cc.CheckDuplicate to android.CheckDuplicate,
which is now shared by cc and rust.
* Refactor tests in binary_test.go and add new test_test.go.
Bug: 140938178
Test: mm in rust projects, added rust_test and rust_test_host
Change-Id: Ia6fec8b4cf2572fd352ab1938a1f3c7b5cca2212
diff --git a/rust/test.go b/rust/test.go
new file mode 100644
index 0000000..816e3c7
--- /dev/null
+++ b/rust/test.go
@@ -0,0 +1,116 @@
+// Copyright 2019 The Android Open Source Project
+//
+// 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 (
+ "path/filepath"
+ "strings"
+
+ "android/soong/android"
+)
+
+// A test module is a binary module with extra --test compiler flag
+// and different default installation directory.
+// In golang, inheriance is written as a component.
+type testBinaryDecorator struct {
+ *binaryDecorator
+}
+
+func NewRustTest(hod android.HostOrDeviceSupported) (*Module, *testBinaryDecorator) {
+ module := newModule(hod, android.MultilibFirst)
+
+ test := &testBinaryDecorator{
+ binaryDecorator: &binaryDecorator{
+ // TODO(chh): set up dir64?
+ baseCompiler: NewBaseCompiler("testcases", ""),
+ },
+ }
+
+ module.compiler = test
+
+ return module, test
+}
+
+func (test *testBinaryDecorator) compilerFlags(ctx ModuleContext, flags Flags) Flags {
+ flags = test.binaryDecorator.compilerFlags(ctx, flags)
+ flags.RustFlags = append(flags.RustFlags, "--test")
+ return flags
+}
+
+func init() {
+ // Rust tests are binary files built with --test.
+ android.RegisterModuleType("rust_test", RustTestFactory)
+ android.RegisterModuleType("rust_test_host", RustTestHostFactory)
+}
+
+func RustTestFactory() android.Module {
+ module, _ := NewRustTest(android.HostAndDeviceSupported)
+ return module.Init()
+}
+
+func RustTestHostFactory() android.Module {
+ module, _ := NewRustTest(android.HostSupported)
+ return module.Init()
+}
+
+func (test *testBinaryDecorator) testPerSrc() bool {
+ return true
+}
+
+func (test *testBinaryDecorator) srcs() []string {
+ return test.Properties.Srcs
+}
+
+func (test *testBinaryDecorator) setSrc(name, src string) {
+ test.Properties.Srcs = []string{src}
+ test.baseCompiler.Properties.Stem = StringPtr(name)
+}
+
+func (test *testBinaryDecorator) unsetSrc() {
+ test.Properties.Srcs = nil
+ test.baseCompiler.Properties.Stem = StringPtr("")
+}
+
+type testPerSrc interface {
+ testPerSrc() bool
+ srcs() []string
+ setSrc(string, string)
+ unsetSrc()
+}
+
+var _ testPerSrc = (*testBinaryDecorator)(nil)
+
+func TestPerSrcMutator(mctx android.BottomUpMutatorContext) {
+ if m, ok := mctx.Module().(*Module); ok {
+ if test, ok := m.compiler.(testPerSrc); ok {
+ numTests := len(test.srcs())
+ if test.testPerSrc() && numTests > 0 {
+ if duplicate, found := android.CheckDuplicate(test.srcs()); found {
+ mctx.PropertyErrorf("srcs", "found a duplicate entry %q", duplicate)
+ return
+ }
+ testNames := make([]string, numTests)
+ for i, src := range test.srcs() {
+ testNames[i] = strings.TrimSuffix(filepath.Base(src), filepath.Ext(src))
+ }
+ // TODO(chh): Add an "all tests" variation like cc/test.go?
+ tests := mctx.CreateLocalVariations(testNames...)
+ for i, src := range test.srcs() {
+ tests[i].(*Module).compiler.(testPerSrc).setSrc(testNames[i], src)
+ }
+ }
+ }
+ }
+}