1 files changed, 233 insertions, 0 deletions
diff --git a/servo/tests/unit/style/parsing/background.rs b/servo/tests/unit/style/parsing/background.rs
new file mode 100644
index 0000000000..55b1dbcd25
--- /dev/null
+++ b/servo/tests/unit/style/parsing/background.rs
@@ -0,0 +1,233 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
+
+use parsing::parse;
+use style::properties::longhands::background_size;
+use style::properties::longhands::{
+    background_attachment, background_clip, background_color, background_image,
+};
+use style::properties::longhands::{
+    background_origin, background_position_x, background_position_y, background_repeat,
+};
+use style::properties::shorthands::background;
+
+#[test]
+fn background_shorthand_should_parse_all_available_properties_when_specified() {
+    let input = "url(\"http://servo/test.png\") top center / 200px 200px repeat-x fixed padding-box content-box red";
+    let result = parse(background::parse_value, input).unwrap();
+
+    assert_eq!(
+        result.background_image,
+        parse_longhand!(background_image, "url(\"http://servo/test.png\")")
+    );
+    assert_eq!(
+        result.background_position_x,
+        parse_longhand!(background_position_x, "center")
+    );
+    assert_eq!(
+        result.background_position_y,
+        parse_longhand!(background_position_y, "top")
+    );
+    assert_eq!(
+        result.background_size,
+        parse_longhand!(background_size, "200px 200px")
+    );
+    assert_eq!(
+        result.background_repeat,
+        parse_longhand!(background_repeat, "repeat-x")
+    );
+    assert_eq!(
+        result.background_attachment,
+        parse_longhand!(background_attachment, "fixed")
+    );
+    assert_eq!(
+        result.background_origin,
+        parse_longhand!(background_origin, "padding-box")
+    );
+    assert_eq!(
+        result.background_clip,
+        parse_longhand!(background_clip, "content-box")
+    );
+    assert_eq!(
+        result.background_color,
+        parse_longhand!(background_color, "red")
+    );
+}
+
+#[test]
+fn background_shorthand_should_parse_when_some_fields_set() {
+    let result = parse(background::parse_value, "14px 40px repeat-y").unwrap();
+
+    assert_eq!(
+        result.background_position_x,
+        parse_longhand!(background_position_x, "14px")
+    );
+    assert_eq!(
+        result.background_position_y,
+        parse_longhand!(background_position_y, "40px")
+    );
+    assert_eq!(
+        result.background_repeat,
+        parse_longhand!(background_repeat, "repeat-y")
+    );
+
+    let result = parse(
+        background::parse_value,
+        "url(\"http://servo/test.png\") repeat blue",
+    )
+    .unwrap();
+
+    assert_eq!(
+        result.background_image,
+        parse_longhand!(background_image, "url(\"http://servo/test.png\")")
+    );
+    assert_eq!(
+        result.background_repeat,
+        parse_longhand!(background_repeat, "repeat")
+    );
+    assert_eq!(
+        result.background_color,
+        parse_longhand!(background_color, "blue")
+    );
+
+    let result = parse(background::parse_value, "padding-box").unwrap();
+
+    assert_eq!(
+        result.background_origin,
+        parse_longhand!(background_origin, "padding-box")
+    );
+    assert_eq!(
+        result.background_clip,
+        parse_longhand!(background_clip, "padding-box")
+    );
+
+    let result = parse(background::parse_value, "url(\"http://servo/test.png\")").unwrap();
+
+    assert_eq!(
+        result.background_image,
+        parse_longhand!(background_image, "url(\"http://servo/test.png\")")
+    );
+}
+
+#[test]
+fn background_shorthand_should_parse_comma_separated_declarations() {
+    let input =
+        "url(\"http://servo/test.png\") top left no-repeat, url(\"http://servo/test.png\") \
+        center / 100% 100% no-repeat, white";
+    let result = parse(background::parse_value, input).unwrap();
+
+    assert_eq!(
+        result.background_image,
+        parse_longhand!(
+            background_image,
+            "url(\"http://servo/test.png\"), \
+        url(\"http://servo/test.png\"), none"
+        )
+    );
+    assert_eq!(
+        result.background_position_x,
+        parse_longhand!(background_position_x, "left, center, 0%")
+    );
+    assert_eq!(
+        result.background_position_y,
+        parse_longhand!(background_position_y, "top, center, 0%")
+    );
+    assert_eq!(
+        result.background_repeat,
+        parse_longhand!(background_repeat, "no-repeat, no-repeat, repeat")
+    );
+    assert_eq!(
+        result.background_clip,
+        parse_longhand!(background_clip, "border-box, border-box, border-box")
+    );
+    assert_eq!(
+        result.background_origin,
+        parse_longhand!(
+            background_origin,
+            "padding-box, padding-box, \
+        padding-box"
+        )
+    );
+    assert_eq!(
+        result.background_size,
+        parse_longhand!(background_size, "auto auto, 100% 100%, auto auto")
+    );
+    assert_eq!(
+        result.background_attachment,
+        parse_longhand!(background_attachment, "scroll, scroll, scroll")
+    );
+    assert_eq!(
+        result.background_color,
+        parse_longhand!(background_color, "white")
+    );
+}
+
+#[test]
+fn background_shorthand_should_parse_position_and_size_correctly() {
+    let result = parse(background::parse_value, "7px 4px").unwrap();
+
+    assert_eq!(
+        result.background_position_x,
+        parse_longhand!(background_position_x, "7px")
+    );
+    assert_eq!(
+        result.background_position_y,
+        parse_longhand!(background_position_y, "4px")
+    );
+
+    let result = parse(background::parse_value, "7px 4px / 30px 20px").unwrap();
+
+    assert_eq!(
+        result.background_position_x,
+        parse_longhand!(background_position_x, "7px")
+    );
+    assert_eq!(
+        result.background_position_y,
+        parse_longhand!(background_position_y, "4px")
+    );
+    assert_eq!(
+        result.background_size,
+        parse_longhand!(background_size, "30px 20px")
+    );
+
+    assert!(parse(background::parse_value, "/ 30px 20px").is_err());
+
+    assert!(parse(background::parse_value, "repeat-x / 30px 20px").is_err());
+}
+
+#[test]
+fn background_shorthand_should_parse_origin_and_clip_correctly() {
+    let result = parse(background::parse_value, "padding-box content-box").unwrap();
+
+    assert_eq!(
+        result.background_origin,
+        parse_longhand!(background_origin, "padding-box")
+    );
+    assert_eq!(
+        result.background_clip,
+        parse_longhand!(background_clip, "content-box")
+    );
+
+    let result = parse(background::parse_value, "padding-box padding-box").unwrap();
+
+    assert_eq!(
+        result.background_origin,
+        parse_longhand!(background_origin, "padding-box")
+    );
+    assert_eq!(
+        result.background_clip,
+        parse_longhand!(background_clip, "padding-box")
+    );
+
+    let result = parse(background::parse_value, "padding-box").unwrap();
+
+    assert_eq!(
+        result.background_origin,
+        parse_longhand!(background_origin, "padding-box")
+    );
+    assert_eq!(
+        result.background_clip,
+        parse_longhand!(background_clip, "padding-box")
+    );
+}