update elements and fix some bugs

lib/src/prism/tests/languages/markdown/code_feature.test

Index: lib/src/prism/tests/languages/markdown/code_feature.test
diff --git a/lib/src/prism/tests/languages/markdown/code_feature.test b/lib/src/prism/tests/languages/markdown/code_feature.test
new file mode 100644
index 0000000000000000000000000000000000000000..2696ca72e293027e02cf1137cdf50f92a3e4c690
--- /dev/null
+++ b/lib/src/prism/tests/languages/markdown/code_feature.test
@@ -0,0 +1,22 @@
+`foo bar baz`
+``foo `bar` baz``
+
+    foobar
+
+	foobar
+
+----------------------------------------------------
+
+[
+	["code", "`foo bar baz`"],
+	["code", "``foo `bar` baz``"],
+	["code", "    foobar"],
+	["code", "\tfoobar"]
+]
+
+----------------------------------------------------
+
+Checks for code blocks and inline code. The first code block is
+indented with 4 spaces, the second one is indented with 1 tab.
+The initial dot is necessary because of the first part being trimmed
+by the test runner.