1 files changed, 39 insertions, 0 deletions
diff --git a/src/cmd/go/internal/test/flagdefs_test.go b/src/cmd/go/internal/test/flagdefs_test.go
new file mode 100644
index 0000000..ab5440b
--- /dev/null
+++ b/src/cmd/go/internal/test/flagdefs_test.go
@@ -0,0 +1,39 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package test
+
+import (
+	"flag"
+	"strings"
+	"testing"
+)
+
+func TestPassFlagToTestIncludesAllTestFlags(t *testing.T) {
+	flag.VisitAll(func(f *flag.Flag) {
+		if !strings.HasPrefix(f.Name, "test.") {
+			return
+		}
+		name := strings.TrimPrefix(f.Name, "test.")
+		switch name {
+		case "testlogfile", "paniconexit0":
+			// These are internal flags.
+		default:
+			if !passFlagToTest[name] {
+				t.Errorf("passFlagToTest missing entry for %q (flag test.%s)", name, name)
+				t.Logf("(Run 'go generate cmd/go/internal/test' if it should be added.)")
+			}
+		}
+	})
+
+	for name := range passFlagToTest {
+		if flag.Lookup("test."+name) == nil {
+			t.Errorf("passFlagToTest contains %q, but flag -test.%s does not exist in test binary", name, name)
+		}
+
+		if CmdTest.Flag.Lookup(name) == nil {
+			t.Errorf("passFlagToTest contains %q, but flag -%s does not exist in 'go test' subcommand", name, name)
+		}
+	}
+}