Add JSArrayRef test case

Author: kateinoigakukun

Diff for: IntegrationTests/JavaScriptKitExec/Sources/JavaScriptKitExec/UnitTestUtils.swift

@@ -30,6 +30,13 @@ func expectObject(_ value: JSValue, file: StaticString = #file, line: UInt = #li
     }
 }
 
+func expectArray(_ value: JSValue, file: StaticString = #file, line: UInt = #line, column: UInt = #column) throws -> JSArrayRef {
+    guard let array = value.array else {
+        throw MessageError("Type of \(value) should be \"object\"", file: file, line: line, column: column)
+    }
+    return array
+}
+
 func expectFunction(_ value: JSValue, file: StaticString = #file, line: UInt = #line, column: UInt = #column) throws -> JSFunctionRef {
     switch value {
     case .function(let ref): return ref

Diff for: IntegrationTests/JavaScriptKitExec/Sources/JavaScriptKitExec/main.swift

@@ -89,6 +89,17 @@ Value_Construction: do {
     print(error)
 }
 
+Array_Iterator: do {
+    let globalObject1 = getJSValue(this: .global, name: "globalObject1")
+    let globalObject1Ref = try expectObject(globalObject1)
+    let prop_4 = getJSValue(this: globalObject1Ref, name: "prop_4")
+    let array = try expectArray(prop_4)
+    let expectedProp_4: [JSValue] = [
+        .number(3), .number(4), .string("str_elm_1"), .number(5)
+    ]
+    try expectEqual(Array(array), expectedProp_4)
+}
+
 Value_Decoder: do {
     struct GlobalObject1: Codable {
         struct Prop1: Codable {

Diff for: Sources/JavaScriptKit/JSArray.swift renamed to Sources/JavaScriptKit/JSArrayRef.swift

@@ -1,7 +1,7 @@
 
-public class JSArray {
+public class JSArrayRef {
 
-    static let classObject = JSObjectRef.global.Array.object!
+    static let classObject = JSObjectRef.global.Array.function!
 
     static func isArray(_ object: JSObjectRef) -> Bool {
         classObject.isArray.function!(object).boolean!
@@ -16,7 +16,7 @@ public class JSArray {
 }
 
 
-extension JSArray: Sequence {
+extension JSArrayRef: Sequence {
     public typealias Element = JSValue
 
     public func makeIterator() -> Iterator {

Diff for: Sources/JavaScriptKit/JSValue.swift

@@ -34,8 +34,8 @@ public enum JSValue: Equatable {
         default: return nil
         }
     }
-    public var array: JSArray? {
-        object.flatMap { JSArray($0) }
+    public var array: JSArrayRef? {
+        object.flatMap { JSArrayRef($0) }
     }
     public var isNull: Bool { return self == .null }
     public var isUndefined: Bool { return self == .undefined }