feat: added handling of failed addition of exclusive file stream to tracked state

HarrisonTCodes · HarrisonTCodes · commit c6600948ef37 · 2025-10-30T17:40:04.000Z
diff --git a/src/TestableIO.System.IO.Abstractions.TestingHelpers/MockFileStream.cs b/src/TestableIO.System.IO.Abstractions.TestingHelpers/MockFileStream.cs
@@ -108,7 +108,10 @@ public MockFileStream(
 
         if (share is FileShare.None) 
         {
-            _fileShareNoneStreams.TryAdd(path, 0);
+            if (!_fileShareNoneStreams.TryAdd(path, 0))
+            {
+                throw CommonExceptions.ProcessCannotAccessFileInUse(path);
+            }
         }
         this.access = access;
         this.share = share;

Original file line number	Diff line number	Diff line change
`@@ -108,7 +108,10 @@ public MockFileStream(`
`108`	`108`
`109`	`109`	`if (share is FileShare.None)`
`110`	`110`	`{`
`111`		`- _fileShareNoneStreams.TryAdd(path, 0);`
	`111`	`+ if (!_fileShareNoneStreams.TryAdd(path, 0))`
	`112`	`+ {`
	`113`	`+ throw CommonExceptions.ProcessCannotAccessFileInUse(path);`
	`114`	`+ }`
`112`	`115`	`}`
`113`	`116`	`this.access = access;`
`114`	`117`	`this.share = share;`