Adding squote test case and generic message

pkg/lint/rules/template.go

@@ -129,7 +129,7 @@ func validateQuotes(templateName string, templateContent string) (lintError supp
 	for _, str := range functions {
 		if match, _ := regexp.MatchString("quote", str); !match {
 			result := strings.Replace(str, "}}", " | quote }}", -1)
-			lintError = fmt.Errorf("templates: \"%s\". add \"| quote\" to your substitution functions: %s -> %s", templateName, str, result)
+			lintError = fmt.Errorf("templates: \"%s\". Wrap your substitution functions in quotes or use the sprig \"quote\" function: %s -> %s", templateName, str, result)
 			return
 		}
 	}
@@ -140,7 +140,7 @@ func validateQuotes(templateName string, templateContent string) (lintError supp
 
 	for _, str := range functions {
 		result := strings.Replace(str, str, fmt.Sprintf("\"%s\"", str), -1)
-		lintError = fmt.Errorf("templates: \"%s\". wrap your substitution functions in double quotes: %s -> %s", templateName, str, result)
+		lintError = fmt.Errorf("templates: \"%s\". Wrap your substitution functions in quotes: %s -> %s", templateName, str, result)
 		return
 	}
 	return

pkg/lint/rules/template_test.go

@@ -47,12 +47,12 @@ func TestValidateQuotes(t *testing.T) {
 
 	for _, test := range failTest {
 		err := validateQuotes("testTemplate.yaml", test)
-		if err == nil || !strings.Contains(err.Error(), "add \"| quote\" to your substitution functions") {
-			t.Errorf("validateQuotes('%s') to return \"add | quote error\", got no error", test)
+		if err == nil || !strings.Contains(err.Error(), "use the sprig \"quote\" function") {
+			t.Errorf("validateQuotes('%s') to return \"use the sprig \"quote\" function:\", got no error.", test)
 		}
 	}
 
-	var successTest = []string{"foo: {{.Release.Service | quote }}", "foo:  {{.Release.Service | quote }}", "- {{.Release.Service | quote }}", "foo: {{default 'Never' .restart_policy | quote }}", "foo: \"{{ .Release.Service }}\"", "foo: \"{{ .Release.Service }} {{ .Foo.Bar }}\"", "foo: \"{{ default 'Never' .Release.Service }} {{ .Foo.Bar }}\""}
+	var successTest = []string{"foo: {{.Release.Service | quote }}", "foo:  {{.Release.Service | quote }}", "- {{.Release.Service | quote }}", "foo: {{default 'Never' .restart_policy | quote }}", "foo: \"{{ .Release.Service }}\"", "foo: \"{{ .Release.Service }} {{ .Foo.Bar }}\"", "foo: \"{{ default 'Never' .Release.Service }} {{ .Foo.Bar }}\"", "foo:  {{.Release.Service | squote }}"}
 
 	for _, test := range successTest {
 		err := validateQuotes("testTemplate.yaml", test)
@@ -66,8 +66,8 @@ func TestValidateQuotes(t *testing.T) {
 
 	for _, test := range failTest {
 		err := validateQuotes("testTemplate.yaml", test)
-		if err == nil || !strings.Contains(err.Error(), "wrap your substitution functions in double quotes") {
-			t.Errorf("validateQuotes('%s') to return \"wrap your substitution functions in double quotes\", got no error %s", test, err.Error())
+		if err == nil || !strings.Contains(err.Error(), "Wrap your substitution functions in quotes") {
+			t.Errorf("validateQuotes('%s') to return \"Wrap your substitution functions in quotes\", got no error", test)
 		}
 	}