withDateFormatString added to XMLDecoder; top array xml test case.

Sources/azureSwiftRuntime/XMLDecoder.swift

@@ -108,6 +108,13 @@ open class XMLDecoder {
         let decoder = _XMLDecoder(referencing: topLevel, options: self.options)
         return try T(from: decoder)
     }
+    
+    open func withDateFormatString(_ dateFormatString: String) -> XMLDecoder {
+        let dateFormatter = DateFormatter()
+        dateFormatter.dateFormat = dateFormatString
+        self.dateDecodingStrategy = .formatted(dateFormatter)
+        return self
+    }
 }
 
 //===----------------------------------------------------------------------===//

Tests/azureSwiftRuntimeTests/TopLevelXML.swift

@@ -0,0 +1,58 @@
+//
+//  JustArrayXML.swift
+//  azureSwiftRuntime
+//
+//  Created by Vladimir Shcherbakov on 1/26/18.
+//
+
+import Foundation
+import XCTest
+import azureSwiftRuntime
+
+
+class TopLevelXMLTests: XCTestCase {
+    
+    override func setUp() {
+        super.setUp()
+    }
+    
+    override func tearDown() {
+        // Put teardown code here. This method is called after the invocation of each test method in the class.
+        super.tearDown()
+    }
+    
+    func testTopLevelArray() {
+        do {
+            let res = try XMLDecoder().decode([Int?]?.self, from: xmlTopLevelArray.data(using: .utf8)!)
+            if let array = res {
+                for val in array {
+                    print (val ?? "-")
+                }
+            } else {
+                print("Array is empty")
+            }
+            
+        } catch {
+            print ("=== Error:", error)
+            XCTFail(error.localizedDescription)
+        }
+    }
+    
+    func testTopLevelArrayOfBooks() {
+        do {
+            let res = try XMLDecoder().decode([Book?]?.self, from: xmlTopLevelArrayOfBooks.data(using: .utf8)!)
+            if let books = res {
+                for book in books {
+                    print ("id: ", book?.id ?? "-")
+                    print ("name: ", book?.name ?? "-")
+                }
+            } else {
+                print("Array is empty")
+            }
+            
+        } catch {
+            print ("=== Error:", error)
+            XCTFail(error.localizedDescription)
+        }
+    }
+}

Tests/azureSwiftRuntimeTests/fixtures/model-flattening/data/TopLevelArrayXML.swift

@@ -0,0 +1,47 @@
+//
+//  TopLevelArrayXML.swift
+//  azureSwiftRuntime
+//
+//  Created by Vladimir Shcherbakov on 1/26/18.
+//
+
+import Foundation
+
+let xmlTopLevelArray =
+"""
+<Array>
+    <val>1</val>
+    <val>2</val>
+    <val>3</val>
+    <val></val>
+    <val>5</val>
+</Array>
+"""
+
+struct Book : Decodable {
+    let name: String?
+    let id: Int?
+}
+
+let xmlTopLevelArrayOfBooks =
+"""
+<Books>
+    <Book>
+        <name>One</name>
+        <id>1</id>
+    </Book>
+    <Book>
+        <name>Two</name>
+        <id>2</id>
+    </Book>
+    <Book>
+        <name>Three</name>
+        <id>3</id>
+    </Book>
+    <Book>
+        <name>Four</name>
+        <id></id>
+    </Book>
+    <Book/>
+</Books>
+"""