From 17bd85ba5d3d66daa2bf41b9e07f4e1b0da48940 Mon Sep 17 00:00:00 2001
From: Timofey Solomko <tsolomko@gmail.com>
Date: Wed, 29 Sep 2021 18:47:56 +0300
Subject: [PATCH] [Tests] Add a test for multiple concatenated LZ4 frames

---
 SWCompression.xcodeproj/project.pbxproj |  4 ++++
 Tests/LZ4Tests.swift                    | 13 +++++++++++++
 Tests/Test Files                        |  2 +-
 3 files changed, 18 insertions(+), 1 deletion(-)

diff --git a/SWCompression.xcodeproj/project.pbxproj b/SWCompression.xcodeproj/project.pbxproj
index 2388ec0b..a0ba887e 100644
--- a/SWCompression.xcodeproj/project.pbxproj
+++ b/SWCompression.xcodeproj/project.pbxproj
@@ -260,6 +260,7 @@
 		E6974C5B2701AC2600E06C60 /* test_dict_B5_dictID.lz4 in Resources */ = {isa = PBXBuildFile; fileRef = E6974C5A2701AC2600E06C60 /* test_dict_B5_dictID.lz4 */; };
 		E6C4150726FE230A00F9D36F /* XxHash32.swift in Sources */ = {isa = PBXBuildFile; fileRef = E6C4150626FE230A00F9D36F /* XxHash32.swift */; };
 		E6D86D2F26FE35C50032CFFA /* XxHash32Tests.swift in Sources */ = {isa = PBXBuildFile; fileRef = E6D86D2E26FE35C50032CFFA /* XxHash32Tests.swift */; };
+		E6DF9ECE2704BF14003BD91E /* test_multi_frame.lz4 in Resources */ = {isa = PBXBuildFile; fileRef = E6DF9ECD2704BF14003BD91E /* test_multi_frame.lz4 */; };
 		E6EDD6A826F7767F00884532 /* test_minor_version_3.7z in Resources */ = {isa = PBXBuildFile; fileRef = E6EDD6A626F7767E00884532 /* test_minor_version_3.7z */; };
 		E6EDD6A926F7767F00884532 /* test_minor_version_4.7z in Resources */ = {isa = PBXBuildFile; fileRef = E6EDD6A726F7767E00884532 /* test_minor_version_4.7z */; };
 		E6EDD6AC26F77C0E00884532 /* test_minor_version_2.7z in Resources */ = {isa = PBXBuildFile; fileRef = E6EDD6AB26F77C0E00884532 /* test_minor_version_2.7z */; };
@@ -530,6 +531,7 @@
 		E6974C5A2701AC2600E06C60 /* test_dict_B5_dictID.lz4 */ = {isa = PBXFileReference; lastKnownFileType = file; path = test_dict_B5_dictID.lz4; sourceTree = "<group>"; };
 		E6C4150626FE230A00F9D36F /* XxHash32.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = XxHash32.swift; sourceTree = "<group>"; };
 		E6D86D2E26FE35C50032CFFA /* XxHash32Tests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = XxHash32Tests.swift; sourceTree = "<group>"; };
+		E6DF9ECD2704BF14003BD91E /* test_multi_frame.lz4 */ = {isa = PBXFileReference; lastKnownFileType = file; path = test_multi_frame.lz4; sourceTree = "<group>"; };
 		E6EDD6A626F7767E00884532 /* test_minor_version_3.7z */ = {isa = PBXFileReference; lastKnownFileType = file; path = test_minor_version_3.7z; sourceTree = "<group>"; };
 		E6EDD6A726F7767E00884532 /* test_minor_version_4.7z */ = {isa = PBXFileReference; lastKnownFileType = file; path = test_minor_version_4.7z; sourceTree = "<group>"; };
 		E6EDD6AB26F77C0E00884532 /* test_minor_version_2.7z */ = {isa = PBXFileReference; lastKnownFileType = file; path = test_minor_version_2.7z; sourceTree = "<group>"; };
@@ -1046,6 +1048,7 @@
 				E652FEC527007E79006BC312 /* test8.lz4 */,
 				E652FEC227007E78006BC312 /* test9.lz4 */,
 				E652FED327007F2F006BC312 /* SWCompressionSourceCode.tar.lz4 */,
+				E6DF9ECD2704BF14003BD91E /* test_multi_frame.lz4 */,
 			);
 			path = LZ4;
 			sourceTree = "<group>";
@@ -1206,6 +1209,7 @@
 				06F066261FFB763400312A82 /* test4.answer in Resources */,
 				06F066481FFB763400312A82 /* SWCompressionSourceCode.zip in Resources */,
 				06F0665D1FFB763400312A82 /* test8.lzma in Resources */,
+				E6DF9ECE2704BF14003BD91E /* test_multi_frame.lz4 in Resources */,
 				06F0664F1FFB763400312A82 /* test_oldgnu.tar in Resources */,
 				E604F3C22700C75F004BD38A /* test_dict_B5.lz4 in Resources */,
 				E652FEE127009BDD006BC312 /* test4_legacy.lz4 in Resources */,
diff --git a/Tests/LZ4Tests.swift b/Tests/LZ4Tests.swift
index 9aea2ea5..3159ecc3 100644
--- a/Tests/LZ4Tests.swift
+++ b/Tests/LZ4Tests.swift
@@ -156,4 +156,17 @@ class LZ4Tests: XCTestCase {
         XCTAssertEqual(decompressedData, answerData)
     }
 
+    func testMultiFrameDecompress() throws {
+        // The test file contains three frames:
+        // - Legacy frame format, compressed test1.answer,
+        // - Skippable frame with 1233 bytes of random data,
+        // - Normal frame with compressed test4.answer.
+        let testData = try Constants.data(forTest: "test_multi_frame", withType: LZ4Tests.testType)
+        let result = try LZ4.multiDecompress(data: testData)
+
+        XCTAssertEqual(result.count, 2)
+        XCTAssertEqual(result[0], try Constants.data(forAnswer: "test1"))
+        XCTAssertEqual(result[1], try Constants.data(forAnswer: "test4"))
+    }
+
 }
diff --git a/Tests/Test Files b/Tests/Test Files
index 9f102c80..5e1f0ce6 160000
--- a/Tests/Test Files	
+++ b/Tests/Test Files	
@@ -1 +1 @@
-Subproject commit 9f102c806854876ff6fe7ef8efac2d4a28b8e7b2
+Subproject commit 5e1f0ce6cc4e57ed0cc8c8166470dad0e52e86de