RFR: 8234194: [TEST_BUG] Reenable few graphics unit tests

[Kevin Rushforth]

On Thu, 14 Nov 2019 19:56:16 GMT, Ambarish Rapte <arapte at openjdk.org> wrote:

> Following graphics unit tests can be re-enabled.
> 
>  1. test.com.sun.javafx.scene.layout.region.BackgroundRepeatConverterTest.scenario2
> RepeatStructConverter.convert() is an internal method and does not verify the parameters. Passing null value to this method results in NPE.
> 
> 2. test.javafx.scene.layout.RegionCSSTest.borderImageWidth_auto
> test.javafx.scene.layout.RegionCSSTest.borderImageWidth_1_auto
> test.javafx.scene.layout.RegionCSSTest.borderImageWidth_1_2Percent_auto
> It is not certain if the value of auto for -fx-border-image-width is 1 or 2 by defaut. But the tests seem correct and they pass.
> 
> 3. test.javafx.scene.Node_cssMethods_Test
> [JDK-8094155](https://bugs.openjdk.java.net/browse/JDK-8094155) is fixed and the tests can be re-enabled.
> 
> ----------------
> 
> Commits:
>  - 5df00884: Reenable few of the graphics unit tests
> 
> Changes: https://git.openjdk.java.net/jfx/pull/39/files
>  Webrev: https://webrevs.openjdk.java.net/jfx/39/webrev.00
>   Issue: https://bugs.openjdk.java.net/browse/JDK-8234194
>   Stats: 12 lines in 3 files changed: 0 ins; 7 del; 5 mod
>   Patch: https://git.openjdk.java.net/jfx/pull/39.diff
>   Fetch: git fetch https://git.openjdk.java.net/jfx pull/39/head:pull/39

Most of this looks OK, but there is one I had a question on.

Have you run this on all platforms?

modules/javafx.graphics/src/test/java/test/com/sun/javafx/scene/layout/region/BackgroundRepeatConverterTest.java line 57:

> 56:     @Test(expected=NullPointerException.class)
> 57:     public void scenario2() {
> 58:         ParsedValue<String,BackgroundRepeat>[][] values = new ParsedValueImpl[][] {

This is at odds with the body of the test, since presumably, the `assertEquals` will never be called.

An expect exception annotation is best used in the case where you do a single thing that is expected to generate that exception. Otherwise and unexpected exception could end up making the test look like it's passing.



PR: https://git.openjdk.java.net/jfx/pull/39