Adding a new rule, no-alt-text as per Issue #75

test/detailed-results-MD041-MD050.md

@@ -15,3 +15,7 @@ name wrong twice:
 MarkDownLint.
 
 A [normal](link) and an [empty one]() and a [fragment](#one).
+
+An image without alt text ![](image.jpg)
+
+![](image.jpg)

test/detailed-results-MD041-MD050.results.json

@@ -45,7 +45,7 @@
         "errorRange": [25, 13]
     },
     {
-        "lineNumber": 18,
+        "lineNumber": 22,
         "ruleName": "MD043",
         "ruleAlias": "required-headers",
         "ruleDescription": "Required header structure",
@@ -79,5 +79,23 @@
         "errorDetail": "Expected: markdownlint; Actual: MarkDownLint",
         "errorContext": null,
         "errorRange": [1, 12]
+    },
+    {
+        "lineNumber": 19,
+        "ruleName": "MD045",
+        "ruleAlias": "no-alt-text",
+        "ruleDescription": "Images should have ALT Text attribute",
+        "errorDetail": null,
+        "errorContext": null,
+        "errorRange": null
+    },
+    {
+        "lineNumber": 21,
+        "ruleName": "MD045",
+        "ruleAlias": "no-alt-text",
+        "ruleDescription": "Images should have ALT Text attribute",
+        "errorDetail": null,
+        "errorContext": null,
+        "errorRange": null
     }
 ]

test/markdownlint-test.js

@@ -966,7 +966,7 @@ module.exports.missingStringValue = function missingStringValue(test) {
 };
 
 module.exports.ruleNamesUpperCase = function ruleNamesUpperCase(test) {
-  test.expect(40);
+  test.expect(41);
   rules.forEach(function forRule(rule) {
     test.equal(rule.name, rule.name.toUpperCase(), "Rule name not upper-case.");
   });
@@ -974,7 +974,7 @@ module.exports.ruleNamesUpperCase = function ruleNamesUpperCase(test) {
 };
 
 module.exports.uniqueAliases = function uniqueAliases(test) {
-  test.expect(80);
+  test.expect(82);
   var tags = [];
   rules.forEach(function forRule(rule) {
     Array.prototype.push.apply(tags, rule.tags);
@@ -991,7 +991,7 @@ module.exports.uniqueAliases = function uniqueAliases(test) {
 };
 
 module.exports.readme = function readme(test) {
-  test.expect(104);
+  test.expect(108);
   var tagToRules = {};
   rules.forEach(function forRule(rule) {
     rule.tags.forEach(function forTag(tag) {
@@ -1053,7 +1053,7 @@ module.exports.readme = function readme(test) {
 };
 
 module.exports.doc = function doc(test) {
-  test.expect(303);
+  test.expect(310);
   fs.readFile("doc/Rules.md", shared.utf8Encoding,
     function readFile(err, contents) {
       test.ifError(err);

test/no_alt_text.json

@@ -0,0 +1,4 @@
+{
+  "default": true,
+  "MD045": true
+}

test/no_alt_text.md

@@ -0,0 +1,3 @@
+# This is an image link without any alt text
+
+![](image.jpg) {MD045}