fixup! Support internal tests

Author: yugui

go/tools/gazelle/rules/generator.go

@@ -27,6 +27,13 @@ const (
 	// defaultLibName is the name of the default go_library rule in a Go
 	// package directory. It must be consistent to _DEFAULT_LIB in go/def.bzl.
 	defaultLibName = "go_default_library"
+	// defaultTestName is a name of an internal test corresponding to
+	// defaultLibName. It does not need to be consistent to something but it
+	// just needs to be unique in the Bazel package
+	defaultTestName = "go_default_test"
+	// defaultXTestName is a name of an external test corresponding to
+	// defaultLibName.
+	defaultXTestName = "go_default_xtest"
 )
 
 // Generator generates Bazel build rules for Go build targets
@@ -119,8 +126,8 @@ func (g *generator) generate(rel string, pkg *build.Package) (*bzl.Rule, error)
 
 func (g *generator) generateTest(rel string, pkg *build.Package, library string) (*bzl.Rule, error) {
 	name := library + "_test"
-	if library == "go_default_library" {
-		name = "go_default_test"
+	if library == defaultLibName {
+		name = defaultTestName
 	}
 	attrs := []keyvalue{
 		{key: "name", value: name},
@@ -140,8 +147,8 @@ func (g *generator) generateTest(rel string, pkg *build.Package, library string)
 
 func (g *generator) generateXTest(rel string, pkg *build.Package, library string) (*bzl.Rule, error) {
 	name := library + "_xtest"
-	if library == "go_default_library" {
-		name = "go_default_xtest"
+	if library == defaultLibName {
+		name = defaultXTestName
 	}
 	attrs := []keyvalue{
 		{key: "name", value: name},