Test linearGradient2 for correct compilation of AngleOrDirection:

#335

tests/Fixtures.elm

@@ -474,3 +474,21 @@ nestedEach =
             [ color (hex "FF0000")
             ]
         ]
+
+
+linearGradientWithAngle : Stylesheet
+linearGradientWithAngle =
+    (stylesheet << namespace "linearGradient2Angle")
+        [ div
+            [ backgroundImage <| linearGradient2 (deg 10) (stop <| hex "000") (stop <| hex "222") []
+            ]
+        ]
+
+
+linearGradientWithDirection : Stylesheet
+linearGradientWithDirection =
+    (stylesheet << namespace "linearGradient2Direction")
+        [ div
+            [ backgroundImage <| linearGradient2 toBottomLeft (stop <| hex "000") (stop <| hex "222") []
+            ]
+        ]

tests/Tests.elm

@@ -724,6 +724,29 @@ bug280 =
         ]
 
 
+bug335 : Test
+bug335 =
+    let
+        compiledWithAngle =
+            prettyPrint Fixtures.linearGradientWithAngle
+
+        compiledWithDirection =
+            prettyPrint Fixtures.linearGradientWithDirection
+    in
+    describe "Github Issue #335: https://github.com/rtfeldman/elm-css/issues/335"
+        [ test "linearGradient2 does not prepend an angle value with the \"to\" keyword." <|
+            \_ ->
+                Expect.false
+                    "Expected compiled angle not to include \"to\""
+                    (String.contains "to" compiledWithAngle)
+        , test "linearGradient2 prepend a direction value with the \"to\" keyword." <|
+            \_ ->
+                Expect.true
+                    "Expected compiled direction to include \"to\""
+                    (String.contains "to" compiledWithDirection)
+        ]
+
+
 nestedEach : Test
 nestedEach =
     let