test: add for struct_tags

spec/fixtures/tags/add_input.go

@@ -0,0 +1,11 @@
+package main
+
+type Test struct {
+	ID      int
+	Name    string
+	Num     int64
+	Another struct {
+		First  int
+		Second string
+	}
+}

spec/fixtures/tags/add_output.go

@@ -0,0 +1,11 @@
+package main
+
+type Test struct {
+	ID      int    `json:"id"`
+	Name    string `json:"name"`
+	Num     int64  `json:"num"`
+	Another struct {
+		First  int    `json:"first"`
+		Second string `json:"second"`
+	} `json:"another"`
+}

spec/fixtures/tags/remove_input.go

@@ -0,0 +1,11 @@
+package main
+
+type Test struct {
+	ID      int    `json:"id"`
+	Name    string `json:"name"`
+	Num     int64  `json:"num"`
+	Another struct {
+		First  int    `json:"first"`
+		Second string `json:"second"`
+	} `json:"another"`
+}

spec/fixtures/tags/remove_output.go

@@ -0,0 +1,11 @@
+package main
+
+type Test struct {
+	ID      int
+	Name    string
+	Num     int64
+	Another struct {
+		First  int
+		Second string
+	}
+}