1 files changed, 93 insertions, 0 deletions
diff --git a/tests/core/stdlib/buildid_test.go b/tests/core/stdlib/buildid_test.go
new file mode 100644
index 00000000..d95ba903
--- /dev/null
+++ b/tests/core/stdlib/buildid_test.go
@@ -0,0 +1,93 @@
+//go:build go1.10
+// +build go1.10
+
+/* Copyright 2018 The Bazel Authors. 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 buildid_test
+
+import (
+	"bytes"
+	"errors"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"testing"
+
+	"github.com/bazelbuild/rules_go/go/runfiles"
+)
+
+func TestEmptyBuildID(t *testing.T) {
+	// Locate the buildid tool and several archive files to check.
+	//   fmt.a - pure go
+	//   crypto/aes.a - contains assembly
+	//   runtime/cgo.a - contains cgo
+	// The path may vary depending on platform and architecture, so just
+	// do a search.
+	var buildidPath string
+	pkgPaths := map[string]string{
+		"fmt.a": "",
+		"aes.a": "",
+		"cgo.a": "",
+	}
+	stdlibPkgDir, err := runfiles.Rlocation("io_bazel_rules_go/stdlib_/pkg")
+	if err != nil {
+		t.Fatal(err)
+	}
+	n := len(pkgPaths)
+	done := errors.New("done")
+	var visit filepath.WalkFunc
+	visit = func(path string, info os.FileInfo, err error) error {
+		if err != nil {
+			return err
+		}
+		if filepath.Base(path) == "buildid" && (info.Mode()&0111) != 0 {
+			buildidPath = path
+		}
+		for pkg := range pkgPaths {
+			if filepath.Base(path) == pkg {
+				pkgPaths[pkg] = path
+				n--
+			}
+		}
+		if buildidPath != "" && n == 0 {
+			return done
+		}
+		return nil
+	}
+	if err = filepath.Walk(stdlibPkgDir, visit); err != nil && err != done {
+		t.Fatal(err)
+	}
+	if buildidPath == "" {
+		t.Fatal("buildid not found")
+	}
+
+	for pkg, path := range pkgPaths {
+		if path == "" {
+			t.Errorf("could not locate %s", pkg)
+			continue
+		}
+		// Equivalent to: go tool buildid pkg.a
+		// It's an error if this produces any output.
+		cmd := exec.Command(buildidPath, path)
+		out, err := cmd.Output()
+		if err != nil {
+			t.Error(err)
+		}
+		if len(bytes.TrimSpace(out)) > 0 {
+			t.Errorf("%s: unexpected buildid: %s", path, out)
+		}
+	}
+}