From aa6648056fd94007ffb036afdb8dced9878a15dd Mon Sep 17 00:00:00 2001
From: Gabriel Weyer <gabrielweyer@gmail.com>
Date: Sat, 30 Jun 2018 11:25:08 +1000
Subject: [PATCH] Create output directory if it doesn't exist

---
 src/dotnet-ad-core/Validation/WritableFileAttribute.cs    | 1 +
 .../Validation/WritableFileAttributeTests.cs              | 8 ++++++--
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/src/dotnet-ad-core/Validation/WritableFileAttribute.cs b/src/dotnet-ad-core/Validation/WritableFileAttribute.cs
index 9a6c2d1..f460d25 100644
--- a/src/dotnet-ad-core/Validation/WritableFileAttribute.cs
+++ b/src/dotnet-ad-core/Validation/WritableFileAttribute.cs
@@ -20,6 +20,7 @@ protected override ValidationResult IsValid(object value, ValidationContext cont
 
             try
             {
+                Directory.CreateDirectory(Path.GetDirectoryName(fullPath));
                 File.WriteAllText(fullPath, "q");
                 return ValidationResult.Success;
             }
diff --git a/tests/dotnet-wad-to-csv-tests/Validation/WritableFileAttributeTests.cs b/tests/dotnet-wad-to-csv-tests/Validation/WritableFileAttributeTests.cs
index 8212f6f..f914cb5 100644
--- a/tests/dotnet-wad-to-csv-tests/Validation/WritableFileAttributeTests.cs
+++ b/tests/dotnet-wad-to-csv-tests/Validation/WritableFileAttributeTests.cs
@@ -50,11 +50,15 @@ public void GivenNonWritableFilePath_WhenGetValidationResult_ThenErrorMessage()
         }
 
         [Fact]
-        public void GivenWritableFilePath_WhenGetValidationResult_ThenNoErrorMessage()
+        public void GivenWritableFilePathInNewDirectory_WhenGetValidationResult_ThenNoErrorMessage()
         {
             // Arrange
 
-            var writableFilePath = Path.GetTempFileName();
+            var writableFilePath = Path.Combine(
+                Path.GetTempPath(),
+                "wad-to-csv-tests",
+                Guid.NewGuid().ToString(),
+                Path.GetRandomFileName());
 
             SetTarget(writableFilePath);