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css: add unit tests for RulesIterator

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Adrià Arrufat
2026-03-14 20:03:25 +09:00
parent 351e44343d
commit bc19079dad
1 changed files with 51 additions and 0 deletions
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51
src/browser/css/Parser.zig
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@@ -419,3 +419,54 @@ pub const RulesIterator = struct {
}
}
};
const testing = std.testing;
test "RulesIterator: single rule" {
var it = RulesIterator.init(".test { color: red; }");
const rule = it.next() orelse return error.MissingRule;
try testing.expectEqualStrings(".test", rule.selector);
try testing.expectEqualStrings(" color: red; ", rule.block);
try testing.expectEqual(@as(?Rule, null), it.next());
}
test "RulesIterator: multiple rules" {
var it = RulesIterator.init("h1 { margin: 0; } p { padding: 10px; }");
var rule = it.next() orelse return error.MissingRule;
try testing.expectEqualStrings("h1", rule.selector);
try testing.expectEqualStrings(" margin: 0; ", rule.block);
rule = it.next() orelse return error.MissingRule;
try testing.expectEqualStrings("p", rule.selector);
try testing.expectEqualStrings(" padding: 10px; ", rule.block);
try testing.expectEqual(@as(?Rule, null), it.next());
}
test "RulesIterator: skips at-rules without block" {
var it = RulesIterator.init("@import url('style.css'); .test { color: red; }");
const rule = it.next() orelse return error.MissingRule;
try testing.expectEqualStrings(".test", rule.selector);
try testing.expectEqualStrings(" color: red; ", rule.block);
try testing.expectEqual(@as(?Rule, null), it.next());
}
test "RulesIterator: skips at-rules with block" {
var it = RulesIterator.init("@media screen { .test { color: blue; } } .test2 { color: green; }");
const rule = it.next() orelse return error.MissingRule;
try testing.expectEqualStrings(".test2", rule.selector);
try testing.expectEqualStrings(" color: green; ", rule.block);
try testing.expectEqual(@as(?Rule, null), it.next());
}
test "RulesIterator: comments and whitespace" {
var it = RulesIterator.init(" /* comment */ .test /* comment */ { /* comment */ color: red; } \n\t");
const rule = it.next() orelse return error.MissingRule;
try testing.expectEqualStrings(".test", rule.selector);
try testing.expectEqualStrings(" /* comment */ color: red; ", rule.block);
try testing.expectEqual(@as(?Rule, null), it.next());
}