| This is a testharness.js-based test. |
| FAIL Constructing a CSSVariableReferenceValue with an invalid variable name throws SyntaxError assert_throws: function "() => new CSSVariableReferenceValue('bar')" did not throw |
| FAIL Updating CSSVariableReferenceValue.variable to an invalid variable name throws SyntaxError assert_throws: function "() => result.variable = 'bar'" did not throw |
| PASS CSSVariableReferenceValue can be constructed with no fallback |
| PASS CSSVariableReferenceValue can be constructed with fallback |
| PASS CSSVariableReferenceValue.variable can updated to a valid variable name |
| PASS CSSVariableReferenceValue.fallback can updated to null |
| PASS CSSVariableReferenceValue.fallback can updated to a CSSUnparsedValue |
| Harness: the test ran to completion. |
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