From 2e5b4dec37f5c1518edf506047d533e9523194db Mon Sep 17 00:00:00 2001
From: Steffan Andrews <stef@orchetect.com>
Date: Fri, 3 Jan 2025 01:15:37 -0800
Subject: [PATCH] Updated unit tests

---
 Package.swift                                 | 12 ++++++-
 .../TestResource/TestResource.swift           | 20 +++++++++++
 .../TestResource/Text Files/utf8-bom-test.csv |  3 ++
 .../TextFileKitTests/TextFile CSV Tests.swift | 35 +++++++++++++++++++
 4 files changed, 69 insertions(+), 1 deletion(-)
 create mode 100644 Tests/TextFileKitTests/TestResource/TestResource.swift
 create mode 100644 Tests/TextFileKitTests/TestResource/Text Files/utf8-bom-test.csv

diff --git a/Package.swift b/Package.swift
index c1bcdd6..ba9f80d 100644
--- a/Package.swift
+++ b/Package.swift
@@ -10,8 +10,18 @@ let package = Package(
     products: [
         .library(name: "TextFileKit", targets: ["TextFileKit"])
     ],
+    dependencies: [
+        .package(url: "https://github.com/orchetect/swift-testing-extensions", .upToNextMajor(from: "0.2.0")),
+    ],
     targets: [
         .target(name: "TextFileKit"),
-        .testTarget(name: "TextFileKitTests", dependencies: ["TextFileKit"])
+        .testTarget(
+            name: "TextFileKitTests",
+            dependencies: [
+                "TextFileKit",
+                .product(name: "TestingExtensions", package: "swift-testing-extensions")
+            ],
+            resources: [.copy("TestResource/Text Files")]
+        )
     ]
 )
diff --git a/Tests/TextFileKitTests/TestResource/TestResource.swift b/Tests/TextFileKitTests/TestResource/TestResource.swift
new file mode 100644
index 0000000..bff0426
--- /dev/null
+++ b/Tests/TextFileKitTests/TestResource/TestResource.swift
@@ -0,0 +1,20 @@
+//
+//  TestResource.swift
+//  TextFileKit • https://github.com/orchetect/TextFileKit
+//  © 2021-2024 Steffan Andrews • Licensed under MIT License
+//
+
+import Foundation
+import Testing
+import TestingExtensions
+
+// NOTE: DO NOT name any folders "Resources". Xcode will fail to build iOS targets.
+
+/// Resources files on disk used for unit testing.
+extension TestResource {
+    enum TextFiles {
+        static let utf8_BOM_Test_csv = TestResource.File(
+            name: "utf8-bom-test", ext: "csv", subFolder: "Text Files"
+        )
+    }
+}
diff --git a/Tests/TextFileKitTests/TestResource/Text Files/utf8-bom-test.csv b/Tests/TextFileKitTests/TestResource/Text Files/utf8-bom-test.csv
new file mode 100644
index 0000000..4511aa6
--- /dev/null
+++ b/Tests/TextFileKitTests/TestResource/Text Files/utf8-bom-test.csv	
@@ -0,0 +1,3 @@
+"Field1","Field2"
+"Row1A","Row1B"
+"Row2A","Row2B"
diff --git a/Tests/TextFileKitTests/TextFile CSV Tests.swift b/Tests/TextFileKitTests/TextFile CSV Tests.swift
index ac2880f..e05f2e8 100644
--- a/Tests/TextFileKitTests/TextFile CSV Tests.swift	
+++ b/Tests/TextFileKitTests/TextFile CSV Tests.swift	
@@ -6,6 +6,7 @@
 
 @testable import TextFileKit
 import Testing
+import TestingExtensions
 
 @Suite struct CSV_Tests {
     @Test func init_Default() {
@@ -137,3 +138,37 @@ extension CSV_Tests {
         #expect(sv.rawText == csvRawText_CommaContainingFields)
     }
 }
+
+// MARK: - BOM (Byte Order Mark) Tests
+
+extension CSV_Tests {
+    static let utf8_BOM_Test_Table: StringTable = [
+        ["Field1", "Field2"],
+        ["Row1A", "Row1B"],
+        ["Row2A", "Row2B"]
+    ]
+    
+    @Test func utf8BOM_initURL() throws {
+        let url = try #require(try TestResource.TextFiles.utf8_BOM_Test_csv.url())
+        
+        let sv = try TextFile.CSV(file: url)
+        
+        let table = sv.table
+        try #require(table.count == 3)
+        #expect(table[0] == Self.utf8_BOM_Test_Table[0])
+        #expect(table[1] == Self.utf8_BOM_Test_Table[1])
+        #expect(table[2] == Self.utf8_BOM_Test_Table[2])
+    }
+    
+    @Test func utf8BOM_initRawData() throws {
+        let data = try #require(try TestResource.TextFiles.utf8_BOM_Test_csv.data())
+        
+        let sv = try TextFile.CSV(rawData: data)
+        
+        let table = sv.table
+        try #require(table.count == 3)
+        #expect(table[0] == Self.utf8_BOM_Test_Table[0])
+        #expect(table[1] == Self.utf8_BOM_Test_Table[1])
+        #expect(table[2] == Self.utf8_BOM_Test_Table[2])
+    }
+}