Add validation of applyFixes via result snapshots.

test/detailed-results-MD001-MD010.md.fixed

@@ -0,0 +1,30 @@
+## One
+
+#### Two
+
+### Three ###
+
+* Alpha
+ * Bravo
+
+- Charlie
+
+* Delta
+ * Echo
+
+Text
+
+Text text
+
+ 1. One
+ 2. Two
+ 3. Three
+ 4. Four
+5. Five
+ 6. Six
+ 7. Seven
+ 8. Eight
+ 9. Nine
+10. Ten
+ 11. Eleven
+12. Twelve

test/detailed-results-MD011-MD021.md.fixed

@@ -0,0 +1,23 @@
+# Top level heading
+
+<!-- markdownlint-disable MD003 -->
+
+A [reversed](link) example.
+
+123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789
+
+## 123456789 123456789 123456789 123456789 123456789 123456789
+
+    $ command with no output
+
+## No space A
+
+## Multiple spaces B
+
+## No space C ####No space C ##
+
+## No space D #### No space D##
+
+## Multiple spaces E ####  Multiple spaces E ##
+
+## Multiple spaces F #### Multiple spaces F  ##

test/detailed-results-MD022-MD030.md.fixed

@@ -0,0 +1,19 @@
+# Heading
+
+Text
+
+# Heading
+
+## Another heading
+
+> Multiple spaces
+> Blank line above
+
+1. Alpha
+3. Beta
+
+> > Multiple spaces, multiple blockquotes
+> >
+> > > Multiple spaces, multiple blockquotes
+> > >
+> > > Multiple spaces, multiple blockquotes

test/detailed-results-MD030-warning-message.md.fixed

@@ -0,0 +1,13 @@
+#
+
+-
+
+1.
+
+- a
+
+1. a
+
+- a
+
+1. a

test/detailed-results-MD031-MD040.md.fixed

@@ -0,0 +1,66 @@
+```js
+debugger;
+```
+
+* List
+
+Inline<hr/>HTML
+
+Bare <https://example.com> link
+
+---
+***
+
+*Emphasis*
+
+Space *inside* emphasis
+
+Space `insidecode span
+
+Space [inside](link) text
+
+```
+```
+
+space ``insideode
+space `inside` of `codeelements
+`space` inside `of` code `elements
+space ``inside`` of ``codelements
+``` embedded backtick
+embedded backtick```
+
+some *space* in *some* emphasis
+some *space* in *some* emphasis
+some *space* in **some** emphasis
+some _space_ in _some_ emphasis
+some __space__ in __some__ emphasis
+
+Text
+text `code
+span
+span` text
+text.
+
+Text
+text `code
+code
+span` text
+text.
+
+* List
+
+---
+
+Text
+text ```code
+span code
+code
+span code
+span code``` text
+text
+text text ````code
+span code
+span
+span code
+span```` text
+text.

test/detailed-results-MD041-MD050.md.fixed

@@ -0,0 +1,27 @@
+Not a heading
+
+An [empty]() link
+
+An [empty](#) link with fragment
+
+An [empty](<>) link with angle brackets
+
+This is a test file for the markdownlint package.
+
+This is a paragraph
+about markdownlint
+that capitalizes the
+name wrong twice:
+markdownlint.
+
+A [normal](link) and an [empty one]() and a [fragment](#one).
+
+An image without alternate text ![](image.jpg)
+
+```text
+Fenced code
+```
+
+    Indented code
+
+Missing newline character

test/detailed-results-blanks-around-headings-0-2.md.fixed

@@ -0,0 +1,26 @@
+# Blanks Around Headings
+
+
+## Apple
+
+
+Text
+## Banana
+
+
+Text
+## Cherry
+
+
+Text
+## Durian ##
+
+
+Text
+
+---
+Elderberry
+----------
+
+Text
+## Fig

test/detailed-results-blanks-around-headings-3-0.md.fixed

@@ -0,0 +1,30 @@
+# Blanks Around Headings
+
+
+
+## Apple
+Text
+
+
+
+## Banana
+Text
+
+
+
+## Cherry
+Text
+
+
+
+## Durian ##
+Text
+
+
+Elderberry
+----------
+Text
+
+
+
+## Fig

test/detailed-results-blanks-around-headings.md.fixed

@@ -0,0 +1,26 @@
+# Blanks Around Headings
+
+## Apple
+
+Text
+
+## Banana
+
+Text
+
+## Cherry
+
+Text
+
+## Durian ##
+
+Text
+
+---
+
+Elderberry
+----------
+
+Text
+
+## Fig

test/detailed-results-front-matter.md.fixed

@@ -0,0 +1,6 @@
+---
+front: matter
+---
+Text
+
+Text

test/detailed-results-html-tags.md.fixed

@@ -0,0 +1,107 @@
+# Detailed HTML Results
+
+Text
+
+<em>Block block</em>
+
+Text <em>inline inline</em> text
+
+Text
+
+<strong>Block block</strong>
+
+Text <strong>inline inline</strong> text
+
+Text
+
+<p>
+Block
+block <em>block</em> block
+block
+block <strong>block</strong> block
+block
+block <em>block</em> block <strong>block</strong> block
+block <strong>block</strong> block <em>block</em> block
+</p>
+
+Text
+
+<strong><em>Block</em> block</strong>
+
+Text <strong><em>inline</em> inline</strong> text
+
+Text
+
+<em><strong>Block</strong> block</em>
+
+Text <em><strong>inline</strong> inline</em> text
+
+Text
+
+Text <em>inline</em> text <strong>inline</strong> text <em>inline</em> text
+
+Text <strong>inline</strong> text <em>inline</em> text <strong>inline</strong> text
+
+Text
+
+\<not>Block block\</not>
+
+\\<problem>Block block\\</problem>
+
+<not\>Block block</not\>
+
+Text \<not>inline inline\</not> text
+
+Text \\<problem>inline inline\\</problem> text
+
+Text <not\>inline inline</not\> text
+
+Text
+
+> Text <em>inline inline</em> text
+> text <strong>inline inline</strong> text
+
+Text
+
+    Text <em>inline inline</em> text
+    text <strong>inline inline</strong> text
+
+Text
+
+```html
+Text <em>inline inline</em> text
+text <strong>inline inline</strong> text
+```
+
+Text
+
+`<em>`
+
+Text ``<em>`` text
+
+Text `<em>` text ``<em>`` text ```<em>``` text
+
+Text `<em>` text <em>inline</em> text
+
+Text ``text <em> text`` text
+
+Text
+
+Text <a href="#anchor">inline</a> text
+text <img src="src.png"/> text
+
+Text
+
+<name@example.com> is an email autolink.
+
+Another email autolink: <first+last@ex.exa-mple.com>.
+
+Text
+
+<foo-bar-baz> is an HTML element.
+
+But <foo.bar.baz> is not an autolink or HTML element.
+And neither is <foo_bar>.
+Nor <123abc>.
+
+Text

test/detailed-results-links.md.fixed

@@ -0,0 +1,26 @@
+# Detailed Link Results
+
+Text <https://example.com/> text
+
+Text <https://example.com/brackets> text <https://example.com/bare> text
+
+Text <https://example.com/bare> text <https://example.com/brackets> text
+
+Text `code https://example.com/code code` text <https://example.com/> text
+
+> Text <https://example.com/brackets> text <https://example.com/bare> text
+
+Text <https://example.com/dir>
+text <https://example.com/file.txt>
+text <https://example.com/dir/dir>
+text <https://example.com/dir/dir/file?query=param>
+
+```text
+Code https://example.com/code?type=fence code
+```
+
+    Code https://example.com/code?type=indent code
+
+Text <https://example.com/same> more text <https://example.com/same> still more text <https://example.com/same> done
+
+Text <https://example.com/same> more \* text https://example.com/same more \[ text <https://example.com/same> done

test/detailed-results-ordered-list-item-prefix-single.md.fixed

@@ -0,0 +1,3 @@
+# Ordered list examples
+
+9. Item

test/detailed-results-ordered-list-item-prefix-zero.md.fixed

@@ -0,0 +1,19 @@
+# Ordered list examples
+
+text
+
+0. Item
+0. Item
+0. Item
+
+text
+
+1. Item
+1. Item
+1. Item
+
+text
+
+1. Item
+2. Item
+3. Item

test/markdownlint-test.js

@@ -35,9 +35,10 @@ function promisify(func, ...args) {
 
 function createTestForFile(file) {
   return function testForFile(test) {
-    test.expect(2);
     const detailedResults = /[/\\]detailed-results-/.test(file);
+    test.expect(detailedResults ? 3 : 2);
     const resultsFile = file.replace(/\.md$/, ".results.json");
+    const fixedFile = file.replace(/\.md$/, ".md.fixed");
     const configFile = file.replace(/\.md$/, ".json");
     let mergedConfig = null;
     const actualPromise = promisify(fs.stat, configFile)
@@ -62,9 +63,34 @@ function createTestForFile(file) {
           });
         })
       .then(
-        function convertResultVersion2To0(resultVersion2) {
+        function diffFixedFiles(resultVersion2or3) {
+          return detailedResults ?
+            Promise.all([
+              promisify(markdownlint, {
+                "files": [ file ],
+                "config": mergedConfig,
+                "resultVersion": 3
+              }),
+              promisify(fs.readFile, file, helpers.utf8Encoding),
+              promisify(fs.readFile, fixedFile, helpers.utf8Encoding)
+            ])
+              .then(function validateApplyFixes(fulfillments) {
+                const [ resultVersion3, content, expected ] = fulfillments;
+                const errors = resultVersion3[file];
+                const actual = helpers.applyFixes(content, errors);
+                // Uncomment the following line to update *.md.fixed files
+                // fs.writeFileSync(fixedFile, actual, helpers.utf8Encoding);
+                test.equal(actual, expected,
+                  "Unexpected output from applyFixes.");
+                return resultVersion2or3;
+              }) :
+            resultVersion2or3;
+        }
+      )
+      .then(
+        function convertResultVersion2To0(resultVersion2or3) {
           const result0 = {};
-          const result2or3 = resultVersion2[file];
+          const result2or3 = resultVersion2or3[file];
           result2or3.forEach(function forResult(result) {
             const ruleName = result.ruleNames[0];
             const lineNumbers = result0[ruleName] || [];