Add tests for nul

1 files changed, 25 insertions, 0 deletions

diff --git a/tests/misc_zero.rs b/tests/misc_zero.rs
new file mode 100644
index 0000000..946a3e2
--- /dev/null
+++ b/tests/misc_zero.rs
@@ -0,0 +1,25 @@
+extern crate micromark;
+use micromark::micromark;
+
+#[test]
+fn zero() {
+    assert_eq!(
+        micromark("asd\0asd"),
+        "<p>asd�asd</p>",
+        "should replace `\\0` w/ a replacement characters (`�`)"
+    );
+
+    assert_eq!(
+        micromark("&#0;"),
+        "<p>�</p>",
+        "should replace NUL in a character reference"
+    );
+
+    // This doesn’t make sense in markdown, as character escapes only work on
+    // ascii punctuation, but it’s good to demonstrate the behavior.
+    assert_eq!(
+        micromark("\\0"),
+        "<p>\\0</p>",
+        "should not support NUL in a character escape"
+    );
+}