custom: custom method support with template added

README.md

@@ -1,4 +1,4 @@
-![inpostor](impostor.png)
+![impostor](impostor.png)
 
 # Impostor
 Impostor is a REST API simulator (Mock server) written in golang. It'll runs based on a configuration provided to simulate various use cases.

config.toml

@@ -3,3 +3,8 @@
         port      = 9000
         host      = "localhost"
         mock_path = "test"
+
+    [apps.settlements]
+        port      = 9001
+        host      = "localhost"
+        mock_path = "test"

generator.go

@@ -14,14 +14,14 @@ type GeneratorFunc func(n int) string
 
 var letterRunes = []rune("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789")
 
-func GenerateString(n int) string {
+func generateString(n int) string {
 	b := make([]rune, n)
 	for i := range b {
 		b[i] = letterRunes[rand.Intn(len(letterRunes))]
 	}
 	return string(b)
 }
 
-func GenerateInt(n int) string {
+func generateInt(n int) string {
 	return fmt.Sprintf("%d", rand.Int63n(1e16))[0:n]
 }

response.go

@@ -10,15 +10,22 @@ import (
 const (
 	ResolverGenerator = "generate"
 	ResolverCopy      = "copy"
+	ResolverCustom    = "custom"
 
 	GeneratorString = "string"
 	GeneratorInt    = "int"
+
+	CustomConstant = "constant"
 )
 
 var (
 	generator = map[string]GeneratorFunc{
-		GeneratorString: GenerateString,
-		GeneratorInt:    GenerateInt,
+		GeneratorString: generateString,
+		GeneratorInt:    generateInt,
+	}
+
+	call = map[string]callerFunc{
+		CustomConstant: callConcat,
 	}
 )
 
@@ -67,6 +74,9 @@ func resolve(key string, tokens []string, data collector) string {
 
 	case ResolverCopy:
 		return copyFrom(tokens, data)
+
+	case ResolverCustom:
+		return customCall(data, tokens)
 	}
 
 	return ""
@@ -96,5 +106,19 @@ func generate(tokens []string) string {
 		return gen(val)
 	}
 
+	log.Println("error: specified generator not found")
+	return ""
+}
+
+func customCall(data collector, tokens []string) string {
+	if len(tokens) < 1 {
+		log.Println("error: invalid number of arguments in call")
+		return ""
+	}
+
+	if caller, ok := call[tokens[0]]; ok {
+		return caller(data, tokens[1:]...)
+	}
+
 	return ""
 }

test/app/create_users.json

@@ -5,7 +5,7 @@
     {
       "response": {
         "label": "create",
-        "body": "{\"id\":\"{{ generate string 14 }}\",\"firstname\":\"{{ copy body firstname }}\",\"lastname\":\"{{ copy body lastname }}\",\"last_seen\":\"{{ copy body option.status }}\"}",
+        "body": "{\"id\":\"{{ generate string 14 }}\",\"firstname\":\"{{ copy body firstname }}\",\"lastname\":\"{{ custom constant }}\",\"last_seen\":\"{{ copy body option.status }}\"}",
         "latency": 0,
         "status_code": 201,
         "headers": {