Add unit test for images in markdown

src/core/components/providers/markdown.jsx

@@ -30,6 +30,9 @@ export default Markdown
 
 const sanitizeOptions = {
     allowedTags: sanitize.defaults.allowedTags.concat([ "h1", "h2", "img" ]),
+    allowedAttributes: {
+        "img": sanitize.defaults.allowedAttributes.img.concat(["title"])
+    },
     textFilter: function(text) {
         return text.replace(/"/g, "\"")
     }

test/components/markdown.js

@@ -5,8 +5,14 @@ import { render } from "enzyme"
 import Markdown from "components/providers/markdown"
 import { Markdown as OAS3Markdown } from "corePlugins/oas3/wrap-components/markdown.js"
 
-describe.only("Markdown component", function() {
+describe("Markdown component", function() {
     describe("Swagger 2.0", function() {
+        it("allows image elements", function() {
+            const str = `![Image alt text](http://image.source "Image title")`
+            const el = render(<Markdown source={str} />)
+            expect(el.html()).toEqual(`<div class="markdown"><p><img src="http://image.source" title="Image title"></p>\n</div>`)
+        })
+
         it("allows heading elements", function() {
             const str = `
 # h1
@@ -14,14 +20,19 @@ describe.only("Markdown component", function() {
 ### h3
 #### h4
 ##### h5
-###### h6
+###### h6`
-      `
             const el = render(<Markdown source={str} />)
             expect(el.html()).toEqual(`<div class="markdown"><h1>h1</h1>\n<h2>h2</h2>\n<h3>h3</h3>\n<h4>h4</h4>\n<h5>h5</h5>\n<h6>h6</h6>\n</div>`)
         })
     })
 
     describe("OAS 3", function() {
+        it("allows image elements", function() {
+            const str = `![Image alt text](http://image.source "Image title")`
+            const el = render(<OAS3Markdown source={str} />)
+            expect(el.html()).toEqual(`<div class="renderedMarkdown"><div><p><img src="http://image.source" title="Image title"></p></div></div>`)
+        })
+
         it("allows heading elements", function() {
             const str = `
 # h1
@@ -29,8 +40,7 @@ describe.only("Markdown component", function() {
 ### h3
 #### h4
 ##### h5
-  ###### h6
+###### h6`
-        `
             const el = render(<OAS3Markdown source={str} />)
             expect(el.html()).toEqual(`<div class="renderedMarkdown"><div><h1>h1</h1>\n<h2>h2</h2>\n<h3>h3</h3>\n<h4>h4</h4>\n<h5>h5</h5>\n<h6>h6</h6></div></div>`)
         })