fix empty slice of structs issue

go.mod

@@ -4,6 +4,6 @@ go 1.14
 
 require (
 	github.com/google/go-cmp v0.5.4
-	github.com/stretchr/testify v1.6.1 // indirect
-	github.com/tidwall/gjson v1.6.0
+	github.com/tidwall/gjson v1.8.1
+	github.com/tidwall/pretty v1.2.0 // indirect
 )

go.sum

@@ -1,20 +1,11 @@
-github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
-github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/google/go-cmp v0.5.4 h1:L8R9j+yAqZuZjsqh/z+F1NCffTKKLShY6zXTItVIZ8M=
 github.com/google/go-cmp v0.5.4/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
-github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
-github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
-github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
-github.com/stretchr/testify v1.6.1 h1:hDPOHmpOpP40lSULcqw7IrRb/u7w6RpDC9399XyoNd0=
-github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
-github.com/tidwall/gjson v1.6.0 h1:9VEQWz6LLMUsUl6PueE49ir4Ka6CzLymOAZDxpFsTDc=
-github.com/tidwall/gjson v1.6.0/go.mod h1:P256ACg0Mn+j1RXIDXoss50DeIABTYK1PULOJHhxOls=
-github.com/tidwall/match v1.0.1 h1:PnKP62LPNxHKTwvHHZZzdOAOCtsJTjo6dZLCwpKm5xc=
-github.com/tidwall/match v1.0.1/go.mod h1:LujAq0jyVjBy028G1WhWfIzbpQfMO8bBZ6Tyb0+pL9E=
-github.com/tidwall/pretty v1.0.0 h1:HsD+QiTn7sK6flMKIvNmpqz1qrpP3Ps6jOKIKMooyg4=
-github.com/tidwall/pretty v1.0.0/go.mod h1:XNkn88O1ChpSDQmQeStsy+sBenx6DDtFZJxhVysOjyk=
+github.com/tidwall/gjson v1.8.1 h1:8j5EE9Hrh3l9Od1OIEDAb7IpezNA20UdRngNAj5N0WU=
+github.com/tidwall/gjson v1.8.1/go.mod h1:5/xDoumyyDNerp2U36lyolv46b3uF/9Bu6OfyQ9GImk=
+github.com/tidwall/match v1.0.3 h1:FQUVvBImDutD8wJLN6c5eMzWtjgONK9MwIBCOrUJKeE=
+github.com/tidwall/match v1.0.3/go.mod h1:eRSPERbgtNPcGhD8UCthc6PmLEQXEWd3PRB5JTxsfmM=
+github.com/tidwall/pretty v1.1.0/go.mod h1:XNkn88O1ChpSDQmQeStsy+sBenx6DDtFZJxhVysOjyk=
+github.com/tidwall/pretty v1.2.0 h1:RWIZEg2iJ8/g6fDDYzMpobmaoGh5OLl4AXtGUGPcqCs=
+github.com/tidwall/pretty v1.2.0/go.mod h1:ITEVvHYasfjBbM0u2Pg8T2nJnzm8xPwvNhhsoaGGjNU=
+golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
-gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
-gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
-gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

unmarshal.go

@@ -61,7 +61,7 @@ func unmarshalSlice(results []gjson.Result, field reflect.Type) interface{} {
 	for i := 0; i < len(results); i++ {
 
 		var value interface{}
-		if isStructureType(field.Elem().String()) {
+		if isStructureType(field.Elem().Kind().String()) {
 			value = parseStructureType(results[i], field.Elem())
 		} else {
 			// set field value depend on it's data type

unmarshal_test.go

@@ -13,16 +13,21 @@ func TestUnmarshalSmall(t *testing.T) {
         "name": {"first": "Mohamed", "last": "Shapan"},
         "age": 26,
         "friends": [
-            {"name": "Asma", "age": 26},
-            {"name": "Ahmed", "age": 25},
-            {"name": "Mahmoud", "age": 30}
+            {"first": "Asma", "age": 26},
+            {"first": "Ahmed", "age": 25},
+            {"first": "Mahmoud", "age": 30}
         ]
 	}`
 
+	type Name struct {
+		First string `njson:"first"`
+		Last  string `njson:"last"`
+	}
+
 	type User struct {
-		Name    string   `njson:"name.last"`
-		Age     int      `njson:"age"`
-		Friends []string `njson:"friends.#.name"`
+		Name    Name   `njson:"name"`
+		Age     int    `njson:"age"`
+		Friends []Name `njson:"friends"`
 	}
 
 	actual := User{}
@@ -32,10 +37,26 @@ func TestUnmarshalSmall(t *testing.T) {
 		t.Error(err)
 	}
 
+	var friends []Name
+	friends = append(friends, Name{
+		First: "Asma",
+	})
+
+	friends = append(friends, Name{
+		First: "Ahmed",
+	})
+
+	friends = append(friends, Name{
+		First: "Mahmoud",
+	})
+
 	expected := User{
-		Name:    "Shapan",
+		Name: Name{
+			First: "Mohamed",
+			Last:  "Shapan",
+		},
 		Age:     26,
-		Friends: []string{"Asma", "Ahmed", "Mahmoud"},
+		Friends: friends,
 	}
 
 	diff := cmp.Diff(expected, actual)