From 7f4f1164f022880057af9174bb3c63dd0830afdd Mon Sep 17 00:00:00 2001
From: Ivan Voischev <voischev@yandex-team.ru>
Date: Mon, 29 Aug 2016 14:39:30 +0300
Subject: [PATCH] fix indent fn if has one '\n' char in styles

---
 index.js     | 18 ++++++++++--------
 test/test.js | 36 ++++++++++++++++++++++++++++--------
 2 files changed, 38 insertions(+), 16 deletions(-)

diff --git a/index.js b/index.js
index c972f29..a32dfee 100644
--- a/index.js
+++ b/index.js
@@ -2,14 +2,16 @@
 var postcss = require('postcss');
 
 function indentResolve(str, options) {
-    if (options.length === undefined) {
-        if (str.match(/\n(?!\n)\s*/g) === null) {
-            return str;
-        }
+    var strLastIndexOf = str.lastIndexOf('\n');
 
-        options.lastLine = str.substr(str.lastIndexOf('\n') + 1);
-        str = str.substr(0, str.lastIndexOf('\n') + 1);
-        options.length = Math.min.apply(Math, str.match(/\n(?!\n)\s*/g).filter(function(space) {
+    if (str.match(/\n(?!\n)\s*/g) === null) {
+        return str;
+    }
+
+    if (options.length === undefined) {
+        options.lastLine = str.substr(strLastIndexOf + 1);
+        var newStr = str.substr(0, strLastIndexOf + 1);
+        options.length = Math.min.apply(Math, newStr.match(/\n(?!\n)\s*/g).filter(function(space) {
             return space.length > 2;
         }).map(function(space) {
             return space.length;
@@ -23,7 +25,7 @@ function indentResolve(str, options) {
         str = str.replace(new RegExp(options.match,'g'), '');
     } else {
         str = str.replace(/\n/g, '\n' + options.match);
-        str = str.substr(0, str.lastIndexOf('\n') + 1) + options.lastLine;
+        str = str.substr(0, strLastIndexOf + 1) + options.lastLine;
     }
     return str;
 }
diff --git a/test/test.js b/test/test.js
index 6186010..027b05a 100644
--- a/test/test.js
+++ b/test/test.js
@@ -3,8 +3,9 @@ var posthtml = require('posthtml');
 var css = require('..');
 var expect = require('chai').expect;
 
-function test(html, expected, postcssOptions, done) {
-    expect(posthtml([css([require('autoprefixer')({ browsers: ['last 2 versions'] })], postcssOptions)])
+function test(html, expected, postcssOptions, plugins, done) {
+    plugins = plugins || [require('autoprefixer')({ browsers: ['last 2 versions'] })];
+    expect(posthtml([css(plugins, postcssOptions)])
         .process(html)
         .then(function(result) {
             expect(expected).to.eql(result.html);
@@ -22,36 +23,55 @@ describe('use postcss', function() {
     it('style tag', function(done) {
         var html = '<style>a {display: flex;}</style>';
         var expected = '<style>a {display: -ms-flexbox;display: flex;}</style>';
-        test(html, expected, {}, done);
+        test(html, expected, {}, null, done);
     });
 
     it('style tag empty', function(done) {
         var html = '<style></style>';
         var expected = '<style></style>';
-        test(html, expected, {}, done);
+        test(html, expected, {}, null, done);
     });
 
     it('style attrs', function(done) {
         var html = '<div style="display: flex;"></div>';
         var expected = '<div style="display: -ms-flexbox;display: flex;"></div>';
-        test(html, expected, {}, done);
+        test(html, expected, {}, null, done);
     });
 
     it('style attrs empty', function(done) {
         var html = '<div style></div>';
         var expected = '<div style=""></div>';
-        test(html, expected, {}, done);
+        test(html, expected, {}, null, done);
     });
 
     it('no style', function(done) {
         var html = 'text <div></div>';
         var expected = 'text <div></div>';
-        test(html, expected, {}, done);
+        test(html, expected, {}, null, done);
     });
 
     it('style tag with newline and not indent', function(done) {
         var html = 'text <style>\n.test { color: red; }</style>';
         var expected = 'text <style>\n.test { color: red; }</style>';
-        test(html, expected, {}, done);
+        test(html, expected, {}, null, done);
+    });
+
+    it('style tag with newline and indent', function(done) {
+        var html = 'text <style>\n    .test { color: red; }</style>';
+        var expected = 'text <style>\n    .test { color: red; }</style>';
+        test(html, expected, {}, null, done);
+    });
+
+    it('style tag with newline and indent + plugin remove "\\n" character', function(done) {
+        var html = 'text <style>\n    .test { color: red; }</style>';
+        var expected = 'text <style>    .test { color: red; }</style>';
+
+        function plugin(root) {
+            root.walk(function(node) {
+                node.raws.before = node.raws.before.replace('\n', '');
+            });
+        }
+
+        test(html, expected, {}, [plugin], done);
     });
 });