Added Base64 tests

Author: fabianfett

Package.swift

@@ -24,10 +24,7 @@ let package = Package(
             .product(name: "NIOFoundationCompat", package: "swift-nio"),
         ]),
         .testTarget(name: "AWSLambdaRuntimeTests", dependencies: ["AWSLambdaRuntime"]),
-        .target(name: "AWSLambdaEvents", dependencies: [
-            .product(name: "NIOHTTP1", package: "swift-nio"),
-            .product(name: "NIOFoundationCompat", package: "swift-nio"),
-        ]),
+        .target(name: "AWSLambdaEvents", dependencies: []),
         .testTarget(name: "AWSLambdaEventsTests", dependencies: ["AWSLambdaEvents"]),
         // samples
         .target(name: "StringSample", dependencies: ["AWSLambdaRuntime"]),

Sources/AWSLambdaEvents/Utils/Base64.swift

@@ -158,7 +158,7 @@ extension Base64 {
         static let base64UrlAlphabet = DecodingOptions(rawValue: UInt(1 << 0))
     }
 
-    enum DecodingError: Error {
+    enum DecodingError: Error, Equatable {
         case invalidLength
         case invalidCharacter(UInt8)
         case unexpectedPaddingCharacter

Tests/AWSLambdaEventsTests/SNSTests.swift

@@ -13,7 +13,6 @@
 //===----------------------------------------------------------------------===//
 
 @testable import AWSLambdaEvents
-import NIO
 import XCTest
 
 class SNSTests: XCTestCase {

Tests/AWSLambdaEventsTests/SQSTests.swift

@@ -13,7 +13,6 @@
 //===----------------------------------------------------------------------===//
 
 @testable import AWSLambdaEvents
-import NIO
 import XCTest
 
 class SQSTests: XCTestCase {

Tests/AWSLambdaEventsTests/Utils/Base64Tests.swift

@@ -0,0 +1,98 @@
+//===----------------------------------------------------------------------===//
+//
+// This source file is part of the SwiftAWSLambdaRuntime open source project
+//
+// Copyright (c) 2017-2020 Apple Inc. and the SwiftAWSLambdaRuntime project authors
+// Licensed under Apache License v2.0
+//
+// See LICENSE.txt for license information
+// See CONTRIBUTORS.txt for the list of SwiftAWSLambdaRuntime project authors
+//
+// SPDX-License-Identifier: Apache-2.0
+//
+//===----------------------------------------------------------------------===//
+
+@testable import AWSLambdaEvents
+import XCTest
+
+class Base64Tests: XCTestCase {
+    // MARK: - Encoding -
+
+    func testEncodeEmptyData() throws {
+        let data = [UInt8]()
+        let encodedData = String(base64Encoding: data)
+        XCTAssertEqual(encodedData.count, 0)
+    }
+
+    func testBase64EncodingArrayOfNulls() throws {
+        let data = Array(repeating: UInt8(0), count: 10)
+        let encodedData = String(base64Encoding: data)
+        XCTAssertEqual(encodedData, "AAAAAAAAAAAAAA==")
+    }
+
+    func testBase64EncodingAllTheBytesSequentially() throws {
+        let data = Array(UInt8(0) ... UInt8(255))
+        let encodedData = String(base64Encoding: data)
+        XCTAssertEqual(encodedData, "AAECAwQFBgcICQoLDA0ODxAREhMUFRYXGBkaGxwdHh8gISIjJCUmJygpKissLS4vMDEyMzQ1Njc4OTo7PD0+P0BBQkNERUZHSElKS0xNTk9QUVJTVFVWV1hZWltcXV5fYGFiY2RlZmdoaWprbG1ub3BxcnN0dXZ3eHl6e3x9fn+AgYKDhIWGh4iJiouMjY6PkJGSk5SVlpeYmZqbnJ2en6ChoqOkpaanqKmqq6ytrq+wsbKztLW2t7i5uru8vb6/wMHCw8TFxsfIycrLzM3Oz9DR0tPU1dbX2Nna29zd3t/g4eLj5OXm5+jp6uvs7e7v8PHy8/T19vf4+fr7/P3+/w==")
+    }
+
+    func testBase64UrlEncodingAllTheBytesSequentially() throws {
+        let data = Array(UInt8(0) ... UInt8(255))
+        let encodedData = String(base64Encoding: data, options: .base64UrlAlphabet)
+        XCTAssertEqual(encodedData, "AAECAwQFBgcICQoLDA0ODxAREhMUFRYXGBkaGxwdHh8gISIjJCUmJygpKissLS4vMDEyMzQ1Njc4OTo7PD0-P0BBQkNERUZHSElKS0xNTk9QUVJTVFVWV1hZWltcXV5fYGFiY2RlZmdoaWprbG1ub3BxcnN0dXZ3eHl6e3x9fn-AgYKDhIWGh4iJiouMjY6PkJGSk5SVlpeYmZqbnJ2en6ChoqOkpaanqKmqq6ytrq-wsbKztLW2t7i5uru8vb6_wMHCw8TFxsfIycrLzM3Oz9DR0tPU1dbX2Nna29zd3t_g4eLj5OXm5-jp6uvs7e7v8PHy8_T19vf4-fr7_P3-_w==")
+    }
+
+    // MARK: - Decoding -
+
+    func testDecodeEmptyString() throws {
+        var decoded: [UInt8]?
+        XCTAssertNoThrow(decoded = try "".base64decoded())
+        XCTAssertEqual(decoded?.count, 0)
+    }
+
+    func testBase64DecodingArrayOfNulls() throws {
+        let expected = Array(repeating: UInt8(0), count: 10)
+        var decoded: [UInt8]?
+        XCTAssertNoThrow(decoded = try "AAAAAAAAAAAAAA==".base64decoded())
+        XCTAssertEqual(decoded, expected)
+    }
+
+    func testBase64DecodingAllTheBytesSequentially() {
+        let base64 = "AAECAwQFBgcICQoLDA0ODxAREhMUFRYXGBkaGxwdHh8gISIjJCUmJygpKissLS4vMDEyMzQ1Njc4OTo7PD0+P0BBQkNERUZHSElKS0xNTk9QUVJTVFVWV1hZWltcXV5fYGFiY2RlZmdoaWprbG1ub3BxcnN0dXZ3eHl6e3x9fn+AgYKDhIWGh4iJiouMjY6PkJGSk5SVlpeYmZqbnJ2en6ChoqOkpaanqKmqq6ytrq+wsbKztLW2t7i5uru8vb6/wMHCw8TFxsfIycrLzM3Oz9DR0tPU1dbX2Nna29zd3t/g4eLj5OXm5+jp6uvs7e7v8PHy8/T19vf4+fr7/P3+/w=="
+
+        let expected = Array(UInt8(0) ... UInt8(255))
+        var decoded: [UInt8]?
+        XCTAssertNoThrow(decoded = try base64.base64decoded())
+
+        XCTAssertEqual(decoded, expected)
+    }
+
+    func testBase64UrlDecodingAllTheBytesSequentially() {
+        let base64 = "AAECAwQFBgcICQoLDA0ODxAREhMUFRYXGBkaGxwdHh8gISIjJCUmJygpKissLS4vMDEyMzQ1Njc4OTo7PD0-P0BBQkNERUZHSElKS0xNTk9QUVJTVFVWV1hZWltcXV5fYGFiY2RlZmdoaWprbG1ub3BxcnN0dXZ3eHl6e3x9fn-AgYKDhIWGh4iJiouMjY6PkJGSk5SVlpeYmZqbnJ2en6ChoqOkpaanqKmqq6ytrq-wsbKztLW2t7i5uru8vb6_wMHCw8TFxsfIycrLzM3Oz9DR0tPU1dbX2Nna29zd3t_g4eLj5OXm5-jp6uvs7e7v8PHy8_T19vf4-fr7_P3-_w=="
+
+        let expected = Array(UInt8(0) ... UInt8(255))
+        var decoded: [UInt8]?
+        XCTAssertNoThrow(decoded = try base64.base64decoded(options: .base64UrlAlphabet))
+
+        XCTAssertEqual(decoded, expected)
+    }
+
+    func testBase64DecodingWithPoop() {
+        XCTAssertThrowsError(_ = try "💩".base64decoded()) { error in
+            XCTAssertEqual(error as? Base64.DecodingError, .invalidCharacter(240))
+        }
+    }
+
+    func testBase64DecodingWithInvalidLength() {
+        XCTAssertThrowsError(_ = try "AAAAA".base64decoded()) { error in
+            XCTAssertEqual(error as? Base64.DecodingError, .invalidLength)
+        }
+    }
+
+    func testNSStringToDecode() {
+        let test = "1234567"
+        let nsstring = test.data(using: .utf8)!.base64EncodedString()
+
+        XCTAssertNoThrow(try nsstring.base64decoded())
+    }
+}