diff --git a/src/Fantomas.Tests/FSharpScriptTests.fs b/src/Fantomas.Tests/FSharpScriptTests.fs
index 36be61888d..498a7144ca 100644
--- a/src/Fantomas.Tests/FSharpScriptTests.fs
+++ b/src/Fantomas.Tests/FSharpScriptTests.fs
@@ -1,11 +1,12 @@
 module Fantomas.Tests.FSharpScriptTests
 
-open Fantomas
-open Fantomas.Extras
+open System.IO
 open NUnit.Framework
 open FsUnit
+open Fantomas
+open Fantomas.Extras
 open Fantomas.Tests.TestHelper
-open System.IO
+open Fantomas.Tests.FormatConfigEditorConfigurationFileTests
 
 [<Test>]
 let ``source _directory keyword should not be replace with actual path`` () =
@@ -31,16 +32,17 @@ let ``e2e script test with keyword __source__directory__`` () =
 #load    ".paket/load/net471/main.group.fsx"
 """
 
-        let file =
-            Path.Combine(Path.GetTempPath(), System.Guid.NewGuid().ToString("N") + ".fsx")
+        let rootFolderName = tempName ()
 
-        File.WriteAllText(file, source)
+        use fsharpScript =
+            new FSharpFile(rootFolderName, fsharpFileExtension = ".fsx", content = source)
 
-        let! formattedFiles = FakeHelpers.formatCode [ file ]
+        let! formattedFiles = FakeHelpers.formatCode [ fsharpScript.FSharpFile ]
+
+        let formattedSource =
+            File.ReadAllText(fsharpScript.FSharpFile)
 
-        let formattedSource = File.ReadAllText(file)
         Array.length formattedFiles == 1
-        File.Delete(file)
 
         formattedSource
         |> String.normalizeNewLine
@@ -61,29 +63,24 @@ let ``fantomas removes module and namespace if it is only 1 word`` () =
     type Counter = int
     """
 
-        let file =
-            Path.Combine(Path.GetTempPath(), System.Guid.NewGuid().ToString("N") + ".fsx")
+        let rootFolderName = tempName ()
 
-        File.WriteAllText(file, source)
+        use fsharpScript =
+            new FSharpFile(rootFolderName, fsharpFileExtension = ".fsx", content = source)
 
         let fantomasConfig =
             { FormatConfig.FormatConfig.Default with
                   StrictMode = true
                   IndentSize = 2
                   SpaceBeforeColon = false }
-            |> EditorConfig.configToEditorConfig
-
-        let editorConfigPath =
-            Path.Combine(Path.GetTempPath(), ".editorconfig")
 
-        File.WriteAllText(editorConfigPath, fantomasConfig)
+        use _editorConfig =
+            new ConfigurationFile(fantomasConfig, rootFolderName)
 
-        let! formattedFiles = FakeHelpers.formatCode [ file ]
+        let! formattedFiles = FakeHelpers.formatCode [ fsharpScript.FSharpFile ]
 
-        let formattedSource = File.ReadAllText(file)
+        let formattedSource = File.ReadAllText fsharpScript.FSharpFile
         Array.length formattedFiles == 1
-        File.Delete(file)
-        File.Delete(editorConfigPath)
 
         formattedSource
         |> String.normalizeNewLine
@@ -107,16 +104,15 @@ let ``number in the filename should not end up in the module name`` () =
     | _ -> printfn "x is %s"   x
 """
 
-    let file =
-        Path.Combine(Path.GetTempPath(), "60Seconds.fsx")
+    let rootFolderName = tempName ()
 
-    File.WriteAllText(file, source)
+    use fsharpScript =
+        new FSharpFile(rootFolderName, fileName = "60Seconds.fsx", content = source)
 
     async {
-        let! formattedFiles = FakeHelpers.formatCode [| file |]
-        let formattedSource = File.ReadAllText(file)
+        let! formattedFiles = FakeHelpers.formatCode [| fsharpScript.FSharpFile |]
+        let formattedSource = File.ReadAllText fsharpScript.FSharpFile
         Array.length formattedFiles == 1
-        File.Delete(file)
 
         formattedSource
         |> String.normalizeNewLine
diff --git a/src/Fantomas.Tests/Fantomas.Tests.fsproj b/src/Fantomas.Tests/Fantomas.Tests.fsproj
index efb069bc80..338bb82d5b 100644
--- a/src/Fantomas.Tests/Fantomas.Tests.fsproj
+++ b/src/Fantomas.Tests/Fantomas.Tests.fsproj
@@ -50,12 +50,12 @@
     <Compile Include="DynamicOperatorTests.fs" />
     <Compile Include="SynExprSetTests.fs" />
     <Compile Include="SynConstTests.fs" />
-    <Compile Include="FSharpScriptTests.fs" />
     <Compile Include="TupleTests.fs" />
     <Compile Include="ElmishTests.fs" />
     <Compile Include="LambdaTests.fs" />
     <Compile Include="IfThenElseTests.fs" />
     <Compile Include="FormatConfigEditorConfigurationFileTests.fs" />
+    <Compile Include="FSharpScriptTests.fs" />
     <Compile Include="CheckTests.fs" />
     <Compile Include="ContextTests.fs" />
     <Compile Include="SpaceBeforeSemicolonTests.fs" />
diff --git a/src/Fantomas.Tests/FormatConfigEditorConfigurationFileTests.fs b/src/Fantomas.Tests/FormatConfigEditorConfigurationFileTests.fs
index 875de2a5eb..9773f316f4 100644
--- a/src/Fantomas.Tests/FormatConfigEditorConfigurationFileTests.fs
+++ b/src/Fantomas.Tests/FormatConfigEditorConfigurationFileTests.fs
@@ -9,7 +9,7 @@ open NUnit.Framework
 open System.IO
 
 let private defaultConfig = FormatConfig.Default
-let private tempName () = Guid.NewGuid().ToString("N")
+let tempName () = Guid.NewGuid().ToString("N")
 
 type ConfigurationFile
     internal
@@ -60,7 +60,15 @@ type ConfigurationFile
             if Directory.Exists(rootDir) then
                 Directory.Delete(rootDir, true)
 
-type FSharpFile internal (rootFolderName: string, ?fsharpFileExtension: string, ?subFolder: string) =
+type FSharpFile
+    internal
+    (
+        rootFolderName: string,
+        ?fsharpFileExtension: string,
+        ?subFolder: string,
+        ?content: string,
+        ?fileName: string
+    ) =
     let rootDir =
         Path.Join(Path.GetTempPath(), rootFolderName)
 
@@ -71,7 +79,8 @@ type FSharpFile internal (rootFolderName: string, ?fsharpFileExtension: string,
     let extension =
         Option.defaultValue ".fs" fsharpFileExtension
 
-    let fsharpFile = sprintf "%s%s" (tempName ()) extension
+    let fsharpFile =
+        Option.defaultValue (sprintf "%s%s" (tempName ()) extension) fileName
 
     let fsharpFilePath =
         match subFolder with
@@ -84,7 +93,8 @@ type FSharpFile internal (rootFolderName: string, ?fsharpFileExtension: string,
             Path.Join(rootDir, sf, fsharpFile)
         | None -> Path.Join(rootDir, fsharpFile)
 
-    do File.WriteAllText(fsharpFilePath, String.empty)
+    let content = Option.defaultValue String.empty content
+    do File.WriteAllText(fsharpFilePath, content)
 
     member __.FSharpFile: string = fsharpFilePath
 
@@ -95,10 +105,13 @@ type FSharpFile internal (rootFolderName: string, ?fsharpFileExtension: string,
 
 [<Test>]
 let ``single configuration file`` () =
+    let rootFolderName = tempName ()
+
     use configFixture =
-        new ConfigurationFile(defaultConfig, tempName ())
+        new ConfigurationFile(defaultConfig, rootFolderName)
 
-    use fsharpFile = new FSharpFile(".fs")
+    use fsharpFile =
+        new FSharpFile(rootFolderName, fsharpFileExtension = ".fs")
 
     let config =
         EditorConfig.readConfiguration fsharpFile.FSharpFile
@@ -152,14 +165,17 @@ let ``parent config should not be taking into account when child is root`` () =
 
 [<Test>]
 let ``configuration file should not affect file extension`` () =
+    let rootFolder = tempName ()
+
     use configFixture =
         new ConfigurationFile(
             { defaultConfig with
                   MaxLineLength = 90 },
-            tempName ()
+            rootFolder
         )
 
-    use fsharpFile = new FSharpFile(".fsx")
+    use fsharpFile =
+        new FSharpFile(rootFolder, fsharpFileExtension = ".fsx")
 
     let config =
         EditorConfig.readConfiguration fsharpFile.FSharpFile
@@ -193,8 +209,10 @@ fsharp_max_function_binding_width=40
 
 [<Test>]
 let ``non existing file should return defaults for readConfiguration`` () =
+    let rootDir = tempName ()
+
     use configFixture =
-        new ConfigurationFile(defaultConfig, tempName ())
+        new ConfigurationFile(defaultConfig, rootDir)
 
     let config =
         EditorConfig.readConfiguration "bogus.fs"
@@ -207,8 +225,10 @@ let ``non existing file should return defaults for readConfiguration`` () =
 
 [<Test>]
 let ``non existing file should return None for tryReadConfiguration`` () =
+    let rootDir = tempName ()
+
     use configFixture =
-        new ConfigurationFile(defaultConfig, tempName ())
+        new ConfigurationFile(defaultConfig, rootDir)
 
     let config =
         EditorConfig.tryReadConfiguration "bogus.fs"