test(css/parser): Add tests for refactoring (#6262)

Author: alexander-akait

crates/swc_css_parser/tests/fixture/at-rule/supports/input.css

@@ -141,3 +141,11 @@
         background: red;
     }
 }
+
+@supports (func("example": 1)) {
+    * { background: red; }
+}
+
+@supports (--var) {
+    * { background: red; }
+}

crates/swc_css_parser/tests/fixture/at-rule/supports/output.json

@@ -1,3 +1,29 @@
 table {
     color: \red;
 }
+
+a {
+    background: url("a).png");
+    background: url(a;a);
+    background: url(a/*);
+    background: \;a;
+}
+:not([foo=")"]) { }
+:not(div/*)*/) { }
+:not(:nth-child(2n of [foo=")"])) { }
+[foo=\"] { }
+[foo=\{] { }
+[foo=\(] { }
+[foo=yes\:\(it\'s\ work\)] { }
+
+\@noat { }
+
+h1\\{
+    color: \\;
+}
+
+[attr="\;"] { }
+
+.prop {
+    \62 olor: red
+}

crates/swc_css_parser/tests/fixture/at-rule/supports/span.rust-debug

@@ -0,0 +1,25 @@
+@supports (--element(".minwidth", { "minWidth": 300 })) {
+    [--self] {
+        background: greenyellow;
+    }
+}
+
+@supports ({"example": 1}) {
+    * { background: red; }
+}
+
+@supports (("example": 1)) {
+    * { background: red; }
+}
+
+@supports ([]) {
+    * { background: red; }
+}
+
+@supports ([color: red]) {
+    * { background: red; }
+}
+
+@supports ([[[[[{ --func(color: { red }) }]]]]]) {
+    * { background: red; }
+}

crates/swc_css_parser/tests/fixture/value/escaped/input.css

@@ -0,0 +1,30 @@
+
+  x Expected ident token at first position in <general-enclosed>
+   ,-[$DIR/tests/recovery/at-rule/supports/non-standard-prelude/input.css:7:1]
+ 7 | @supports ({"example": 1}) {
+   :           ^^^^^^^^^^^^^^^^
+   `----
+
+  x Expected ident token at first position in <general-enclosed>
+    ,-[$DIR/tests/recovery/at-rule/supports/non-standard-prelude/input.css:11:1]
+ 11 | @supports (("example": 1)) {
+    :           ^^^^^^^^^^^^^^^^
+    `----
+
+  x Expected ident token at first position in <general-enclosed>
+    ,-[$DIR/tests/recovery/at-rule/supports/non-standard-prelude/input.css:15:1]
+ 15 | @supports ([]) {
+    :           ^^^^
+    `----
+
+  x Expected ident token at first position in <general-enclosed>
+    ,-[$DIR/tests/recovery/at-rule/supports/non-standard-prelude/input.css:19:1]
+ 19 | @supports ([color: red]) {
+    :           ^^^^^^^^^^^^^^
+    `----
+
+  x Expected ident token at first position in <general-enclosed>
+    ,-[$DIR/tests/recovery/at-rule/supports/non-standard-prelude/input.css:23:1]
+ 23 | @supports ([[[[[{ --func(color: { red }) }]]]]]) {
+    :           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+    `----