Add test case for -transform=lowercamel

endtoend_test.go

@@ -64,6 +64,9 @@ func TestEndToEnd(t *testing.T) {
 		if name == "transform.go" {
 			typeName = "CamelCaseValue"
 			transformNameMethod = "snake"
+		} else if name == "transformlowercamel.go" {
+			typeName = "CamelCaseValue"
+			transformNameMethod = "lowercamel"
 		}
 
 		stringerCompileAndRun(t, dir, stringer, typeName, name, transformNameMethod)
@@ -122,4 +125,4 @@ func runInDir(dir, name string, arg ...string) error {
 	cmd.Stdout = os.Stdout
 	cmd.Stderr = os.Stderr
 	return cmd.Run()
-}
+}

testdata/transformlowercamel.go

@@ -0,0 +1,25 @@
+package main
+
+import "fmt"
+
+type CamelCaseValue int
+
+const (
+	CamelCaseValueOne CamelCaseValue = iota
+	CamelCaseValueTwo
+	CamelCaseValueThree
+)
+
+func main() {
+	ck(CamelCaseValueOne, "camelCaseValueOne")
+	ck(CamelCaseValueTwo, "camelCaseValueTwo")
+	ck(CamelCaseValueThree, "camelCaseValueThree")
+	ck(-127, "CamelCaseValue(-127)")
+	ck(127, "CamelCaseValue(127)")
+}
+
+func ck(value CamelCaseValue, str string) {
+	if fmt.Sprint(value) != str {
+		panic("transformlowercamel.go: " + str)
+	}
+}