Adding upstream version 110.0.1.upstream/110.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 25 insertions, 0 deletions

diff --git a/testing/web-platform/tests/css/README.md b/testing/web-platform/tests/css/README.md
new file mode 100644
index 0000000000..20f1e60a8b
--- /dev/null
+++ b/testing/web-platform/tests/css/README.md
@@ -0,0 +1,25 @@
+Introduction
+------------
+
+This directory contains testsuites for CSS WG specifications, including ones
+that do not strictly speaking define CSS features, e.g.,
+[Geometry Interfaces](https://drafts.fxtf.org/geometry/).
+
+The directories should be named like the specification's shortname, but without
+any level suffix.
+
+As the test harness relies on the largely undocumented old CSS build system,
+this directory has a number of test requirements specific to it:
+
+ * support files for a given test must live in an adjacent `support` directory;
+
+ * tests must have a [`<link rel=help>`][spec-link] pointing to what they are
+   testing;
+
+ * for each spec so linked, test filenames must be unique; and
+
+ * support and reference files must have unique filenames within the entire
+   `css` directory.
+
+
+[spec-link]: https://web-platform-tests.org/writing-tests/css-metadata.html#specification-links