1 files changed, 44 insertions, 0 deletions
diff --git a/spec/ruby/shared/file/writable.rb b/spec/ruby/shared/file/writable.rb
new file mode 100644
index 0000000000..65ea2c1781
--- /dev/null
+++ b/spec/ruby/shared/file/writable.rb
@@ -0,0 +1,44 @@
+describe :file_writable, shared: true do
+  before :each do
+    @file = tmp('i_exist')
+  end
+
+  after :each do
+    rm_r @file
+  end
+
+  it "returns true if named file is writable by the effective user id of the process, otherwise false" do
+    platform_is_not :windows, :android do
+      as_user do
+        @object.send(@method, "/etc/passwd").should == false
+      end
+    end
+    File.open(@file,'w') { @object.send(@method, @file).should == true }
+  end
+
+  it "accepts an object that has a #to_path method" do
+    File.open(@file,'w') { @object.send(@method, mock_to_path(@file)).should == true }
+  end
+
+  platform_is_not :windows do
+    as_superuser do
+      context "when run by a superuser" do
+        it "returns true unconditionally" do
+          file = tmp('temp.txt')
+          touch file
+
+          File.chmod(0555, file)
+          @object.send(@method, file).should == true
+
+          rm_r file
+        end
+      end
+    end
+  end
+end
+
+describe :file_writable_missing, shared: true do
+  it "returns false if the file does not exist" do
+    @object.send(@method, 'fake_file').should == false
+  end
+end