Add tests for comparing two placeholders

README.md

@@ -125,7 +125,7 @@ Here are some examples of conditions you can use:
 | `[BODY].data[0].id == 1`     | JSONPath value of `$.data[0].id` is equal to 1          | `{"data":[{"id":1}]}`      |  |
 | `len([BODY].data) < 5`       | Array at JSONPath `$.data` has less than 5 elements     | `{"data":[{"id":1}]}`      |  |
 | `len([BODY].name) == 8`      | String at JSONPath `$.name` has a length of 8           | `{"name":"john.doe"}`      | `{"name":"bob"}` |
-
+| `[BODY].age == [BODY].id`    | JSONPath value of `$.age` is equal JSONPath `$.id`      | `{"user":{"name":"john"}}` |  |
 
 ### Alerting
 

core/condition_test.go

@@ -113,6 +113,24 @@ func TestCondition_evaluateWithBodyJsonPathComplex(t *testing.T) {
 	}
 }
 
+func TestCondition_evaluateWithBodyJsonPathDoublePlaceholders(t *testing.T) {
+	condition := Condition("[BODY].user.firstName != [BODY].user.lastName")
+	result := &Result{Body: []byte("{\"user\": {\"firstName\": \"john\", \"lastName\": \"doe\"}}")}
+	condition.evaluate(result)
+	if !result.ConditionResults[0].Success {
+		t.Errorf("Condition '%s' should have been a success", condition)
+	}
+}
+
+func TestCondition_evaluateWithBodyJsonPathDoublePlaceholdersFailure(t *testing.T) {
+	condition := Condition("[BODY].user.firstName == [BODY].user.lastName")
+	result := &Result{Body: []byte("{\"user\": {\"firstName\": \"john\", \"lastName\": \"doe\"}}")}
+	condition.evaluate(result)
+	if result.ConditionResults[0].Success {
+		t.Errorf("Condition '%s' should have been a failure", condition)
+	}
+}
+
 func TestCondition_evaluateWithBodyJsonPathLongInt(t *testing.T) {
 	condition := Condition("[BODY].data.id == 1")
 	result := &Result{Body: []byte("{\"data\": {\"id\": 1}}")}

core/util.go

@@ -19,6 +19,7 @@ const (
 	InvalidConditionElementSuffix = "(INVALID)"
 )
 
+// sanitizeAndResolve sanitizes and resolves a list of element and returns the list of resolved elements
 func sanitizeAndResolve(list []string, result *Result) []string {
 	var sanitizedList []string
 	body := strings.TrimSpace(string(result.Body))
@@ -34,7 +35,7 @@ func sanitizeAndResolve(list []string, result *Result) []string {
 		case BodyPlaceHolder:
 			element = body
 		default:
-			// if starts with BodyPlaceHolder, then evaluate json path
+			// if contains the BodyPlaceHolder, then evaluate json path
 			if strings.Contains(element, BodyPlaceHolder) {
 				wantLength := false
 				if strings.HasPrefix(element, LengthFunctionPrefix) && strings.HasSuffix(element, FunctionSuffix) {