diff --git a/test/cases/encoded_surrogates.json b/test/cases/encoded_surrogates.json
new file mode 100644
index 0000000..7c0e3a9
--- /dev/null
+++ b/test/cases/encoded_surrogates.json
@@ -0,0 +1 @@
+["\ud801\udc00"]
\ No newline at end of file
diff --git a/test/cases/encoded_surrogates.test b/test/cases/encoded_surrogates.test
new file mode 100644
index 0000000..6a0a93d
--- /dev/null
+++ b/test/cases/encoded_surrogates.test
@@ -0,0 +1,3 @@
+[start_array, {string, [66560]}, end_array].
+
+[{escaped_unicode, codepoint}].
\ No newline at end of file
diff --git a/test/cases/multibyte_utf.json b/test/cases/multibyte_utf.json
new file mode 100644
index 0000000..b7f80d7
--- /dev/null
+++ b/test/cases/multibyte_utf.json
@@ -0,0 +1 @@
+[ " 𝄞 " ]
\ No newline at end of file
diff --git a/test/cases/multibyte_utf.test b/test/cases/multibyte_utf.test
new file mode 100644
index 0000000..4548fa5
--- /dev/null
+++ b/test/cases/multibyte_utf.test
@@ -0,0 +1 @@
+[start_array,{string,[32, 119070, 32]},end_array].
\ No newline at end of file