From 1e21c9b2180c422d9c199e605cbdbd5e1403fdfe Mon Sep 17 00:00:00 2001
From: viral32111 <19510403+viral32111@users.noreply.github.com>
Date: Sun, 23 Jul 2023 19:54:19 +0100
Subject: [PATCH] Add unit test for save to file

---
 .../Source/FileSystem/SaveToFile.cs           | 70 ++++++++++++++++++-
 1 file changed, 69 insertions(+), 1 deletion(-)

diff --git a/JsonExtensions.Tests/Source/FileSystem/SaveToFile.cs b/JsonExtensions.Tests/Source/FileSystem/SaveToFile.cs
index 82f3a27..4f5323e 100644
--- a/JsonExtensions.Tests/Source/FileSystem/SaveToFile.cs
+++ b/JsonExtensions.Tests/Source/FileSystem/SaveToFile.cs
@@ -1,3 +1,4 @@
+using System.Text.Json;
 using System.Text.Json.Nodes;
 using Xunit;
 
@@ -6,8 +7,75 @@ namespace viral32111.JsonExtensions.Tests.FileSystem;
 public class SaveToFileTests {
 
 	[ Fact ]
-	public void SaveToFile() {
+	public void SaveToFileEmptyObject() {
+		string temporaryFilePath = Path.GetTempFileName(); // Creates the file, but our method overwrites anyway
 		
+		JsonObject jsonObject = new();
+
+		jsonObject.SaveToFile( temporaryFilePath );
+
+		Assert.True( File.Exists( temporaryFilePath ) );
+		Assert.NotEmpty( File.ReadAllText( temporaryFilePath ) );
+
+		Assert.Equal( "{}", File.ReadAllText( temporaryFilePath ) );
+		Assert.Equal( JsonSerializer.Serialize( jsonObject ), File.ReadAllText( temporaryFilePath ) );
+
+		File.Delete( temporaryFilePath );
+	}
+
+	[ Fact ]
+	public void SaveToFileFullObject() {
+		string temporaryFilePath = Path.GetTempFileName(); // Creates the file, but our method overwrites anyway
+		
+		JsonObject originalJsonObject = new() {
+			[ "one" ] = "hello",
+			[ "two" ] = "world"
+		};
+
+		originalJsonObject.SaveToFile( temporaryFilePath );
+
+		Assert.True( File.Exists( temporaryFilePath ) );
+		Assert.NotEmpty( File.ReadAllText( temporaryFilePath ) );
+
+		JsonObject fileJsonObject = JsonSerializer.Deserialize<JsonObject>( File.ReadAllText( temporaryFilePath ) )!;
+
+		Assert.Equal( JsonSerializer.Serialize( originalJsonObject ), JsonSerializer.Serialize( fileJsonObject ) ); // Alternative to deep equal
+		Assert.NotSame( originalJsonObject, fileJsonObject );
+		Assert.NotStrictEqual( originalJsonObject, fileJsonObject );
+
+		Assert.Equal( "hello", ( string? ) fileJsonObject[ "one" ] );
+		Assert.Equal( "world", ( string? ) fileJsonObject[ "two" ] );
+
+		File.Delete( temporaryFilePath );
+	}
+
+	[ Fact ]
+	public void ReadFromFileSaveToSameFile() {
+		string temporaryFilePath = Path.GetTempFileName(); // Creates the file, but our method overwrites anyway
+		
+		JsonObject originalJsonObject = new() {
+			[ "one" ] = "hello",
+			[ "two" ] = "world"
+		};
+
+		File.WriteAllText( temporaryFilePath, JsonSerializer.Serialize( originalJsonObject ) );
+
+		JsonObject fileJsonObject = JsonExtensions.ReadFromFile( temporaryFilePath );
+		fileJsonObject[ "one" ] = "goodbye";
+		fileJsonObject.SaveToFile( temporaryFilePath );
+
+		Assert.True( File.Exists( temporaryFilePath ) );
+		Assert.NotEmpty( File.ReadAllText( temporaryFilePath ) );
+
+		JsonObject newFileJsonObject = JsonSerializer.Deserialize<JsonObject>( File.ReadAllText( temporaryFilePath ) )!;
+
+		Assert.Equal( JsonSerializer.Serialize( fileJsonObject ), JsonSerializer.Serialize( newFileJsonObject ) ); // Alternative to deep equal
+		Assert.NotSame( fileJsonObject, newFileJsonObject );
+		Assert.NotStrictEqual( fileJsonObject, newFileJsonObject );
+
+		Assert.Equal( "goodbye", ( string? ) newFileJsonObject[ "one" ] );
+
+		File.Delete( temporaryFilePath );
 	}
 
 }