Added Test Sequence as a test harness

Author: dimitribouniol

Sources/AsyncSequenceReader/AsyncSequenceReader.swift

@@ -1 +1,8 @@
+//
+//  AsyncSequenceReader.swift
+//  AsyncSequenceReader
+//
+//  Created by Dimitri Bouniol on 2021-11-16.
+//  Copyright © 2021 Mochi Development, Inc. All rights reserved.
+//
 

Tests/AsyncSequenceReaderTests/AsyncSequenceReaderTests.swift

@@ -1,3 +1,11 @@
+//
+//  AsyncSequenceReaderTests.swift
+//  AsyncSequenceReader
+//
+//  Created by Dimitri Bouniol on 2021-11-16.
+//  Copyright © 2021 Mochi Development, Inc. All rights reserved.
+//
+
 import XCTest
 @testable import AsyncSequenceReader
 

Tests/AsyncSequenceReaderTests/TestSequence.swift

@@ -0,0 +1,45 @@
+//
+//  TestSequence.swift
+//  AsyncSequenceReader
+//
+//  Created by Dimitri Bouniol on 2021-11-16.
+//  Copyright © 2021 Mochi Development, Inc. All rights reserved.
+//
+
+import Foundation
+
+struct TestSequence<Base>: AsyncSequence where Base: Sequence {
+    typealias Element = Base.Element
+    
+    var base: Base
+    
+    struct AsyncIterator: AsyncIteratorProtocol {
+        var baseIterator: Base.Iterator
+        
+        mutating func next() async -> Base.Iterator.Element? {
+            baseIterator.next()
+        }
+    }
+    
+    func makeAsyncIterator() -> AsyncIterator {
+        AsyncIterator(baseIterator: base.makeIterator())
+    }
+}
+
+struct ThrowingTestSequence<Base>: AsyncSequence where Base: Sequence {
+    typealias Element = Base.Element
+    
+    var base: Base
+    
+    struct AsyncIterator: AsyncIteratorProtocol {
+        var baseIterator: Base.Iterator
+        
+        mutating func next() async throws -> Base.Iterator.Element? {
+            baseIterator.next()
+        }
+    }
+    
+    func makeAsyncIterator() -> AsyncIterator {
+        AsyncIterator(baseIterator: base.makeIterator())
+    }
+}