Add playground env

Author: antonmedv

test/playground/env.go

@@ -0,0 +1,71 @@
+package playground
+
+import "time"
+
+type Env struct {
+	Products  []Product  `expr:"products"`
+	Customers []Customer `expr:"customers"`
+	Discounts []Discount `expr:"discounts"`
+	Orders    []Order    `expr:"orders"`
+}
+
+type Product struct {
+	Name        string
+	Description string
+	Price       float64
+	Stock       int
+	AddOn       *AddOn
+	Metadata    map[string]interface{}
+	Tags        []string
+	Rating      float64
+	Reviews     []Review
+}
+
+type Feature struct {
+	Id          string
+	Description string
+}
+
+type Discount struct {
+	Name    string
+	Percent int
+}
+
+type Customer struct {
+	FirstName string
+	LastName  string
+	Age       int
+	Addresses []Address
+}
+
+type Address struct {
+	Country    string
+	City       string
+	Street     string
+	PostalCode string
+}
+
+type Order struct {
+	Number    int
+	Customer  Customer
+	Items     []*OrderItem
+	Discounts []*Discount
+	CreatedAt time.Time
+}
+
+type OrderItem struct {
+	Product  Product
+	Quantity int
+}
+
+type Review struct {
+	Product  *Product
+	Customer *Customer
+	Comment  string
+	Rating   float64
+}
+
+type AddOn struct {
+	Name  string
+	Price float64
+}