Add unicode-range tests.

Author: SimonSapin

src/css-parsing-tests/README.rst

@@ -142,6 +142,13 @@ associated with the expected result.
     the output as null for invalid syntax,
     or an array of two integers ``[A, B]``.
 
+``urange.json``
+    Tests the `urange <https://drafts.csswg.org/css-syntax-3/#urange>`_
+    syntax defined in CSS Syntax Level 3.
+    The Unicode input is represented by a JSON string,
+    the output as null for invalid syntax,
+    or an array of two integers ``[start, end]``.
+
 
 Result representation
 =====================

src/css-parsing-tests/urange.json

@@ -0,0 +1,81 @@
+[
+
+"u+1, U+10, U+100, U+1000, U+10000, U+100000, U+1000000", [
+    [1, 1],
+    [16, 16],
+    [256, 256],
+    [4096, 4096],
+    [65536, 65536],
+    [1048576, 1048576],
+    null
+],
+
+"u+?, u+1?, U+10?, U+100?, U+1000?, U+10000?, U+100000?", [
+    [0, 15],
+    [16, 31],
+    [256, 271],
+    [4096, 4111],
+    [65536, 65551],
+    [1048576, 1048591],
+    null
+],
+
+"u+??, U+1??, U+10??, U+100??, U+1000??, U+10000??", [
+    [0, 255],
+    [256, 511],
+    [4096, 4351],
+    [65536, 65791],
+    [1048576, 1048831],
+    null
+],
+
+"u+???, U+1???, U+10???, U+100???, U+1000???", [
+    [0, 4095],
+    [4096, 8191],
+    [65536, 69631],
+    [1048576, 1052671],
+    null
+],
+
+"u+????, U+1????, U+10????, U+100????", [
+    [0, 65535],
+    [65536, 131071],
+    [1048576, 1114111],
+    null
+],
+
+"u+?????, U+1?????, U+10?????", [
+    [0, 1048575],
+    null,
+    null
+],
+
+"u+??????, U+1??????", [
+    null,
+    null
+],
+
+
+"u+20-3F, u+3F-3F, u+3F-3E, U+0-110000, U+0-10FFFF, U+100000-2, U+1000000-2, U+10-200000", [
+    [32, 63],
+    [63, 63],
+    null,
+    null,
+    [0, 1114111],
+    null,
+    null,
+    null
+],
+
+"ù+12, Ü+12, u +12, U+ 12, U+12 - 20, U+1?2, U+1?-50, U+1- 2", [
+    null,
+    null,
+    null,
+    null,
+    null,
+    null,
+    null,
+    null
+]
+
+]

src/tests.rs

@@ -23,7 +23,7 @@ use super::{Parser, Delimiter, Token, NumericValue, PercentageValue, SourceLocat
             parse_one_declaration, parse_one_rule, parse_important,
             stylesheet_encoding, EncodingSupport,
             TokenSerializationType,
-            Color, RGBA, parse_nth, ToCss};
+            Color, RGBA, parse_nth, UnicodeRange, ToCss};
 
 macro_rules! JArray {
     ($($e: expr,)*) => { JArray![ $( $e ),* ] };
@@ -358,6 +358,21 @@ fn nth() {
     });
 }
 
+#[test]
+fn unicode_range() {
+    run_json_tests(include_str!("css-parsing-tests/urange.json"), |input| {
+        input.parse_comma_separated(|input| {
+            let result = UnicodeRange::parse(input).ok().map(|r| (r.start, r.end));
+            if input.is_exhausted() {
+                Ok(result)
+            } else {
+                while let Ok(_) = input.next() {}
+                Ok(None)
+            }
+        }).unwrap().to_json()
+    });
+}
+
 
 #[test]
 fn serializer_not_preserving_comments() {