[gtk/matthiasc/for-master] testsuite: Add a css test

[Matthias Clasen <matthiasc src gnome org>]

commit 1a12999431523772b08108daf816b4faf863745c
Author: Matthias Clasen <mclasen redhat com>
Date:   Sat Oct 31 00:36:47 2020 -0400

    testsuite: Add a css test
    
    This test verifies that CDO and CDC are ignored
    as required.

 testsuite/css/parser/cdo-cdc.css     | 7 +++++++
 testsuite/css/parser/cdo-cdc.ref.css | 3 +++
 testsuite/css/parser/meson.build     | 2 ++
 3 files changed, 12 insertions(+)
---
diff --git a/testsuite/css/parser/cdo-cdc.css b/testsuite/css/parser/cdo-cdc.css
new file mode 100644
index 0000000000..3670c19285
--- /dev/null
+++ b/testsuite/css/parser/cdo-cdc.css
@@ -0,0 +1,7 @@
+<!--
+
+label {
+  color: red;
+}
+
+-->
diff --git a/testsuite/css/parser/cdo-cdc.ref.css b/testsuite/css/parser/cdo-cdc.ref.css
new file mode 100644
index 0000000000..e53c8cfd5c
--- /dev/null
+++ b/testsuite/css/parser/cdo-cdc.ref.css
@@ -0,0 +1,3 @@
+label {
+  color: rgb(255,0,0);
+}
diff --git a/testsuite/css/parser/meson.build b/testsuite/css/parser/meson.build
index 7ffd5d2644..380489427c 100644
--- a/testsuite/css/parser/meson.build
+++ b/testsuite/css/parser/meson.build
@@ -197,6 +197,8 @@ test_data = [
   'calc.ref.css',
   'calc-simple.css',
   'calc-simple.ref.css',
+  'cdo-cdc.css',
+  'cdo-cdc.ref.css',
   'close-at-end-of-file.css',
   'close-at-end-of-file.errors',
   'close-at-end-of-file.ref.css',