Enable scss/function-color-channel rule

__tests__/index.test.mjs

@@ -42,30 +42,38 @@ describe('flags warnings with invalid scss', () => {
 		assert.equal(result.errored, true);
 	});
 
-	it('flags one warning', () => {
-		assert.equal(result.results[0].warnings.length, 1);
+	it('flags two warnings', () => {
+		assert.equal(result.results[0].warnings.length, 2);
 	});
 
-	it('correct warning text', () => {
+	it('correct warning texts', () => {
 		assert.equal(
 			result.results[0].warnings[0].text,
 			'Expected @if not statement rather than @if statement == null (scss/at-if-no-null)',
 		);
+		assert.equal(
+			result.results[0].warnings[1].text,
+			'Expected the color.channel function to be used (scss/function-color-channel)',
+		);
 	});
 
-	it('correct rule flagged', () => {
+	it('correct rules flagged', () => {
 		assert.equal(result.results[0].warnings[0].rule, 'scss/at-if-no-null');
+		assert.equal(result.results[0].warnings[1].rule, 'scss/function-color-channel');
 	});
 
 	it('correct severity flagged', () => {
 		assert.equal(result.results[0].warnings[0].severity, 'error');
+		assert.equal(result.results[0].warnings[1].severity, 'error');
 	});
 
-	it('correct line number', () => {
+	it('correct line numbers', () => {
 		assert.equal(result.results[0].warnings[0].line, 1);
+		assert.equal(result.results[0].warnings[1].line, 4);
 	});
 
-	it('correct column number', () => {
+	it('correct column numbers', () => {
 		assert.equal(result.results[0].warnings[0].column, 5);
+		assert.equal(result.results[0].warnings[1].column, 14);
 	});
 });

__tests__/invalid.scss

@@ -1 +1,5 @@
 @if $x == null { color: red; }
+
+p {
+    opacity: color.alpha(rgb(210, 225, 221, 0.4));
+}

__tests__/valid.scss

@@ -156,3 +156,7 @@ $global-variable: first global value;
   from { opacity: 0%; }
   to { opacity: 100%; }
 }
+
+p {
+  opacity: color.channel(rgb(210, 225, 221, 0.4), "alpha");
+}

index.js

@@ -19,12 +19,7 @@ module.exports = {
 		'function-no-unknown': null,
 		'media-feature-name-value-no-unknown': null,
 		'media-query-no-invalid': null,
-		'no-invalid-position-at-import-rule': [
-			true,
-			{
-				ignoreAtRules: ['use', 'forward'],
-			},
-		],
+		'no-invalid-position-at-import-rule': [true, { ignoreAtRules: ['use', 'forward'] }],
 		'string-no-newline': true,
 		'unit-no-unknown': true,
 		'scss/at-extend-no-missing-placeholder': true,
@@ -33,6 +28,7 @@ module.exports = {
 		'scss/comment-no-empty': true,
 		'scss/declaration-nested-properties-no-divided-groups': true,
 		'scss/dollar-variable-no-missing-interpolation': true,
+		'scss/function-color-channel': true,
 		'scss/function-quote-no-quoted-strings-inside': true,
 		'scss/function-unquote-no-unquoted-strings-inside': true,
 		'scss/load-no-partial-leading-underscore': true,