Add a test for multiple type declarations

Author: tsuzu

pkg/analysis/commentstart/testdata/src/a/a.go

@@ -57,6 +57,15 @@ type unexportedStruct struct {
 	NoComment string `json:"noComment"` // want "field NoComment is missing godoc comment"
 }
 
+type (
+	MultipleTypeDeclaration1 struct {
+		NoComment string `json:"noComment"` // want "field NoComment is missing godoc comment"
+	}
+	MultipleTypeDeclaration2 struct {
+		NoComment string `json:"noComment"` // want "field NoComment is missing godoc comment"
+	}
+)
+
 func FunctionWithStructs() {
 	type InaccessibleStruct struct {
 		NoComment string `json:"noComment"`

pkg/analysis/commentstart/testdata/src/a/a.go.golden

@@ -57,6 +57,15 @@ type unexportedStruct struct {
 	NoComment string `json:"noComment"` // want "field NoComment is missing godoc comment"
 }
 
+type (
+	MultipleTypeDeclaration1 struct {
+		NoComment string `json:"noComment"` // want "field NoComment is missing godoc comment"
+	}
+	MultipleTypeDeclaration2 struct {
+		NoComment string `json:"noComment"` // want "field NoComment is missing godoc comment"
+	}
+)
+
 func FunctionWithStructs() {
 	type InaccessibleStruct struct {
 		NoComment string `json:"noComment"`