Allow skipping markdown between code blocks

internal/renderer/json.go

@@ -42,12 +42,14 @@ func (r *renderer) GetDocument(source []byte, n ast.Node) (document, error) {
 
 		if lastCodeBlock != nil {
 			prevStop := r.getMarkdownStop(lastCodeBlock)
-			md := string(source[prevStop:start])
-			snip := snippets.Snippet{
-				Markdown: md,
+			// check for existence of markdown in between code blocks
+			if start > prevStop {
+				md := string(source[prevStop:start])
+				snip := snippets.Snippet{
+					Markdown: md,
+				}
+				snips = append(snips, &snip)
 			}
-			snips = append(snips, &snip)
-
 			lastCodeBlock = n
 		}
 

internal/renderer/json_test.go

@@ -13,7 +13,7 @@ import (
 	"github.com/yuin/goldmark/text"
 )
 
-var testCases = []string{"happy", "simple", "linesless", "singleblock"}
+var testCases = []string{"happy", "simple", "linesless", "singleblock", "doublecode"}
 
 func TestParser_Renderer(t *testing.T) {
 	snapshotter := cupaloy.New(cupaloy.SnapshotSubdirectory("testdata/.snapshots"))

internal/renderer/testdata/.snapshots/TestParser_Renderer-doublecode

@@ -0,0 +1 @@
+{"document":[{"markdown":"Runme Examples\n==============\n\nThis `README.md` contains some example for testing this extension.\n\n# Extension Example Markdown Files\n\nThis markdown file contains some custom examples to test the execution within a VS Code Notebook.\n\n## Shell Executions"},{"content":"echo \"Hello World\"\n","description":"Shell Executions","language":"sh","lines":["echo \"Hello World\""]},{"content":"echo \"Foo 👀\"\nsleep 2\necho \"Bar 🕺\"\nsleep 2\necho \"Loo 🚀\"\n","description":"echo \"Hello World\"\n","language":"sh","lines":["echo \"Foo 👀\"","sleep 2","echo \"Bar 🕺\"","sleep 2","echo \"Loo 🚀\""]},{"markdown":"## Complexer Output"},{"content":"yarn global add webdriverio\n","description":"Complexer Output","language":"sh","lines":["yarn global add webdriverio"]},{"markdown":"## Stdin Example"},{"content":"node ./scripts/stdin.js\n","description":"Stdin Example","lines":["node ./scripts/stdin.js"]}]}

internal/renderer/testdata/doublecode.md

@@ -0,0 +1,34 @@
+Runme Examples
+==============
+
+This `README.md` contains some example for testing this extension.
+
+# Extension Example Markdown Files
+
+This markdown file contains some custom examples to test the execution within a VS Code Notebook.
+
+## Shell Executions
+
+```sh
+echo "Hello World"
+```
+
+```sh
+echo "Foo 👀"
+sleep 2
+echo "Bar 🕺"
+sleep 2
+echo "Loo 🚀"
+```
+
+## Complexer Output
+
+```sh
+yarn global add webdriverio
+```
+
+## Stdin Example
+
+```
+node ./scripts/stdin.js
+```