Move directory-aware Touch() up into BaseFixture

Author: dahlbyk

LibGit2Sharp.Tests/CurrentOperationFixture.cs

@@ -50,18 +50,5 @@ public void CurrentOperationHasExpectedPendingOperationValues(string stateFile,
                 Assert.Equal(expectedState, repo.Info.CurrentOperation);
             }
         }
-
-        private void Touch(string parent, string file)
-        {
-            var lastIndex = file.LastIndexOf('/');
-            if (lastIndex > 0)
-            {
-                var parents = file.Substring(0, lastIndex);
-                Directory.CreateDirectory(Path.Combine(parent, parents));
-            }
-
-            var filePath = Path.Combine(parent, file);
-            File.AppendAllText(filePath, string.Empty, Encoding.ASCII);
-        }
     }
 }

LibGit2Sharp.Tests/TestHelpers/BaseFixture.cs

@@ -175,5 +175,18 @@ private static RepositoryOptions BuildFakeRepositoryOptions(SelfCleaningDirector
                 SystemConfigurationLocation = systemLocation,
             };
         }
+
+        protected void Touch(string parent, string file, string content = null)
+        {
+            var lastIndex = file.LastIndexOf('/');
+            if (lastIndex > 0)
+            {
+                var parents = file.Substring(0, lastIndex);
+                Directory.CreateDirectory(Path.Combine(parent, parents));
+            }
+
+            var filePath = Path.Combine(parent, file);
+            File.AppendAllText(filePath, content ?? string.Empty, Encoding.ASCII);
+        }
     }
 }