fix: cast values of numeric arrays to float64 (#7)

dummies_test.go

@@ -7,7 +7,7 @@ import (
 )
 
 /*
-	Struct used to test "parameter calls".
+Struct used to test "parameter calls".
 */
 type dummyParameter struct {
 	String    string
@@ -73,6 +73,8 @@ var dummyParameterInstance = dummyParameter{
 		"String":        "string!",
 		"Int":           101,
 		"StringCompare": strings.Compare,
+		"IntArray":      []interface{}{1, 2, 3},
+		"StringArray":   []interface{}{"foo", "bar", "baz"},
 	},
 }
 

evaluationStage.go

@@ -446,6 +446,7 @@ func separatorStage(left interface{}, right interface{}, parameters Parameters)
 func inStage(left interface{}, right interface{}, parameters Parameters) (interface{}, error) {
 
 	for _, value := range right.([]interface{}) {
+		value = castToFloat64(value)
 		if left == value {
 			return true, nil
 		}

evaluation_test.go

@@ -9,7 +9,7 @@ import (
 )
 
 /*
-	Represents a test of expression evaluation
+Represents a test of expression evaluation
 */
 type EvaluationTest struct {
 	Name       string
@@ -1405,6 +1405,20 @@ func TestParameterizedEvaluation(test *testing.T) {
 			Parameters: []EvaluationParameter{fooParameter},
 			Expected:   1.0,
 		},
+		EvaluationTest{
+
+			Name:       "Nested Map IntArray",
+			Input:      "3 IN foo.Map.IntArray",
+			Parameters: []EvaluationParameter{fooParameter},
+			Expected:   true,
+		},
+		EvaluationTest{
+
+			Name:       "Nested Map StringArray",
+			Input:      `"bar" IN foo.Map.StringArray`,
+			Parameters: []EvaluationParameter{fooParameter},
+			Expected:   true,
+		},
 		EvaluationTest{
 
 			Name:       "Parameter call with + modifier",
@@ -1439,7 +1453,7 @@ func TestParameterizedEvaluation(test *testing.T) {
 }
 
 /*
-	Tests the behavior of a nil set of parameters.
+Tests the behavior of a nil set of parameters.
 */
 func TestNilParameters(test *testing.T) {
 
@@ -1452,8 +1466,8 @@ func TestNilParameters(test *testing.T) {
 }
 
 /*
-	Tests functionality related to using functions with a struct method receiver.
-	Created to test #54.
+Tests functionality related to using functions with a struct method receiver.
+Created to test #54.
 */
 func TestStructFunctions(test *testing.T) {