1 files changed, 67 insertions, 0 deletions
diff --git a/tests/frontmatter.rs b/tests/frontmatter.rs
new file mode 100644
index 0000000..4882bf2
--- /dev/null
+++ b/tests/frontmatter.rs
@@ -0,0 +1,67 @@
+extern crate micromark;
+use micromark::{micromark, micromark_with_options, Constructs, Options};
+
+#[test]
+fn frontmatter() {
+    let frontmatter = Options {
+        constructs: Constructs {
+            frontmatter: true,
+            ..Constructs::default()
+        },
+        ..Options::default()
+    };
+
+    assert_eq!(
+        micromark("---\ntitle: Jupyter\n---"),
+        "<hr />\n<h2>title: Jupyter</h2>",
+        "should not support frontmatter by default"
+    );
+
+    assert_eq!(
+        micromark_with_options("---\ntitle: Jupyter\n---", &frontmatter),
+        "",
+        "should support frontmatter (yaml)"
+    );
+
+    assert_eq!(
+        micromark_with_options("+++\ntitle = \"Jupyter\"\n+++", &frontmatter),
+        "",
+        "should support frontmatter (toml)"
+    );
+
+    assert_eq!(
+        micromark_with_options("---\n---", &frontmatter),
+        "",
+        "should support empty frontmatter"
+    );
+
+    assert_eq!(
+        micromark_with_options("---\n---\n## Neptune", &frontmatter),
+        "<h2>Neptune</h2>",
+        "should support content after frontmatter"
+    );
+
+    assert_eq!(
+        micromark_with_options("## Neptune\n---\n---", &frontmatter),
+        "<h2>Neptune</h2>\n<hr />\n<hr />",
+        "should not support frontmatter after content"
+    );
+
+    assert_eq!(
+        micromark_with_options("> ---\n> ---\n> ## Neptune", &frontmatter),
+        "<blockquote>\n<hr />\n<hr />\n<h2>Neptune</h2>\n</blockquote>",
+        "should not support frontmatter in a container"
+    );
+
+    assert_eq!(
+        micromark_with_options("---", &frontmatter),
+        "<hr />",
+        "should not support just an opening fence"
+    );
+
+    assert_eq!(
+        micromark_with_options("---\ntitle: Neptune", &frontmatter),
+        "<hr />\n<p>title: Neptune</p>",
+        "should not support a missing closing fence"
+    );
+}