From 9c335360fe66483a9be6182046af8104b1bbae9c Mon Sep 17 00:00:00 2001
From: Charles Suh <charles.suh@gmail.com>
Date: Sat, 29 Feb 2020 21:13:37 -0800
Subject: [PATCH] Add ignoreSelectors option to
 block-opening-brace-space-before

---
 .../README.md                                 |  21 +++
 .../__tests__/index.js                        | 170 ++++++++++--------
 .../block-opening-brace-space-before/index.js |   6 +
 3 files changed, 119 insertions(+), 78 deletions(-)

diff --git a/lib/rules/block-opening-brace-space-before/README.md b/lib/rules/block-opening-brace-space-before/README.md
index b4febe5201..b637275141 100644
--- a/lib/rules/block-opening-brace-space-before/README.md
+++ b/lib/rules/block-opening-brace-space-before/README.md
@@ -195,3 +195,24 @@ The following patterns are _not_ considered violations:
 ```css
 @for ...{}
 ```
+
+### `ignoreSelectors: ["/regex/", /regex/, "non-regex"]`
+
+Given:
+
+```
+[":root"]
+```
+
+The following patterns are _not_ considered violations:
+
+<!-- prettier-ignore -->
+```css
+:root
+{}
+```
+
+<!-- prettier-ignore -->
+```css
+:root{}
+```
diff --git a/lib/rules/block-opening-brace-space-before/__tests__/index.js b/lib/rules/block-opening-brace-space-before/__tests__/index.js
index 16aac542e9..baa824f66d 100644
--- a/lib/rules/block-opening-brace-space-before/__tests__/index.js
+++ b/lib/rules/block-opening-brace-space-before/__tests__/index.js
@@ -80,89 +80,103 @@ testRule(rule, {
 	],
 });
 
-testRule(rule, {
-	ruleName,
-	config: ['always', { ignoreAtRules: ['for'] }],
-	fix: true,
+for (const selector of ['for', '/fo/', /fo/]) {
+	testRule(rule, {
+		ruleName,
+		config: ['always', { ignoreAtRules: [selector] }],
+		fix: true,
 
-	accept: [
-		{
-			code: 'a { color: pink; }',
-		},
-		{
-			code: '@for ...\n{ color: pink; }',
-		},
-		{
-			code: '@for ...\r\n{ color: pink; }',
-		},
-	],
+		accept: [
+			{
+				code: 'a { color: pink; }',
+			},
+			{
+				code: '@for ...\n{ color: pink; }',
+			},
+			{
+				code: '@for ...\r\n{ color: pink; }',
+			},
+		],
 
-	reject: [
-		{
-			code: 'a{ color: pink; }',
-			fixed: 'a { color: pink; }',
-			message: messages.expectedBefore(),
-			line: 1,
-			column: 1,
-		},
-	],
-});
+		reject: [
+			{
+				code: 'a{ color: pink; }',
+				fixed: 'a { color: pink; }',
+				message: messages.expectedBefore(),
+				line: 1,
+				column: 1,
+			},
+		],
+	});
+}
 
-testRule(rule, {
-	ruleName,
-	config: ['always', { ignoreAtRules: '/fo/' }],
-	fix: true,
+for (const selector of ['a', '/a/', /a/]) {
+	testRule(rule, {
+		ruleName,
+		config: ['always', { ignoreSelectors: [selector] }],
+		fix: true,
 
-	accept: [
-		{
-			code: 'a { color: pink; }',
-		},
-		{
-			code: '@for ...\n{ color: pink; }',
-		},
-		{
-			code: '@for ...\r\n{ color: pink; }',
-		},
-	],
+		accept: [
+			{
+				code: 'a { color: pink; }',
+			},
+			{
+				code: 'a{ color: pink; }',
+			},
+			{
+				code: 'a\n{ color: pink; }',
+			},
+			{
+				code: 'a\r\n{ color: pink; }',
+			},
+		],
 
-	reject: [
-		{
-			code: 'a{ color: pink; }',
-			fixed: 'a { color: pink; }',
-			message: messages.expectedBefore(),
-			line: 1,
-			column: 1,
-		},
-	],
-});
-
-testRule(rule, {
-	ruleName,
-	config: ['always', { ignoreAtRules: /fo/ }],
-	fix: true,
-
-	accept: [
-		{
-			code: 'a { color: pink; }',
-		},
-		{
-			code: '@for ...\n{ color: pink; }',
-		},
-		{
-			code: '@for ...\r\n{ color: pink; }',
-		},
-	],
-
-	reject: [
-		{
-			code: 'a{ color: pink; }',
-			fixed: 'a { color: pink; }',
-			message: messages.expectedBefore(),
-			line: 1,
-			column: 1,
-		},
-	],
-});
+		reject: [
+			{
+				code: 'b{ color: pink; }',
+				fixed: 'b { color: pink; }',
+				message: messages.expectedBefore(),
+				line: 1,
+				column: 1,
+			},
+			{
+				code: 'b\n{ color: pink; }',
+				fixed: 'b { color: pink; }',
+				message: messages.expectedBefore(),
+				line: 1,
+				column: 2,
+			},
+			{
+				code: 'b\r\n{ color: pink; }',
+				fixed: 'b { color: pink; }',
+				message: messages.expectedBefore(),
+				line: 1,
+				column: 2,
+			},
+			{
+				code: '@a{ color: pink; }',
+				fixed: '@a { color: pink; }',
+				message: messages.expectedBefore(),
+				line: 1,
+				column: 2,
+			},
+			{
+				code: '@a\n{ color: pink; }',
+				fixed: '@a { color: pink; }',
+				message: messages.expectedBefore(),
+				line: 1,
+				column: 3,
+			},
+			{
+				code: '@a\r\n{ color: pink; }',
+				fixed: '@a { color: pink; }',
+				message: messages.expectedBefore(),
+				line: 1,
+				column: 3,
+			},
+		],
+	});
+}
 
 testRule(rule, {
 	ruleName,
diff --git a/lib/rules/block-opening-brace-space-before/index.js b/lib/rules/block-opening-brace-space-before/index.js
index 0097fc9f19..9977dc023f 100644
--- a/lib/rules/block-opening-brace-space-before/index.js
+++ b/lib/rules/block-opening-brace-space-before/index.js
@@ -44,6 +44,7 @@ function rule(expectation, options, context) {
 				actual: options,
 				possible: {
 					ignoreAtRules: [_.isString, _.isRegExp],
+					ignoreSelectors: [_.isString, _.isRegExp],
 				},
 				optional: true,
 			},
@@ -68,6 +69,11 @@ function rule(expectation, options, context) {
 				return;
 			}
 
+			// Return early if selector is to be ignored
+			if (optionsMatches(options, 'ignoreSelectors', statement.selector)) {
+				return;
+			}
+
 			const source = beforeBlockString(statement);
 			const beforeBraceNoRaw = beforeBlockString(statement, {
 				noRawBefore: true,