ident equality ignores quotekind

src/value/mod.rs

@@ -138,13 +138,23 @@ impl Value {
         }
     }
 
+    pub fn equals(self, other: Value) -> SassResult<bool> {
+        Ok(match self.eval()? {
+            Self::Ident(s1, ..) => match other {
+                Self::Ident(s2, ..) => s1 == s2,
+                _ => false,
+            }
+            s @ _ => s == other.eval()?,
+        })
+    }
+
     pub fn eval(self) -> SassResult<Self> {
         match self {
             Self::BinaryOp(lhs, op, rhs) => match op {
                 Op::Plus => *lhs + *rhs,
                 Op::Minus => *lhs - *rhs,
-                Op::Equal => Ok(Self::bool(*lhs == *rhs)),
+                Op::Equal => Ok(Self::bool(lhs.equals(*rhs)?)),
-                Op::NotEqual => Ok(Self::bool(*lhs != *rhs)),
+                Op::NotEqual => Ok(Self::bool(!lhs.equals(*rhs)?)),
                 Op::Mul => *lhs * *rhs,
                 Op::Div => *lhs / *rhs,
                 Op::Rem => *lhs % *rhs,

tests/values.rs

@@ -358,3 +358,28 @@ test!(
     "a {\n  color: '\\\'';\n}\n",
     "a {\n  color: \"'\";\n}\n"
 );
+test!(
+    color_equals_color,
+    "a {\n  color: red == red;\n}\n",
+    "a {\n  color: true;\n}\n"
+);
+test!(
+    color_does_not_equal_color,
+    "a {\n  color: red != red;\n}\n",
+    "a {\n  color: false;\n}\n"
+);
+test!(
+    unquoted_ident_eq_unquoted_ident,
+    "a {\n  color: foo == foo;\n}\n",
+    "a {\n  color: true;\n}\n"
+);
+test!(
+    dblquoted_ident_eq_unquoted_ident,
+    "a {\n  color: \"foo\" == foo;\n}\n",
+    "a {\n  color: true;\n}\n"
+);
+test!(
+    dblquoted_ident_eq_sglquoted_ident,
+    "a {\n  color: \"foo\" == 'foo';\n}\n",
+    "a {\n  color: true;\n}\n"
+);