From 5b1130debe9d35676aff972fbcf5270f28d8a2ff Mon Sep 17 00:00:00 2001
From: Rynco Maekawa <i@rynco.me>
Date: Tue, 19 Mar 2024 16:53:16 +0800
Subject: [PATCH] Add tests for escaping

---
 string/moon.pkg.json |  9 ++++++++-
 string/string.mbt    | 12 ++++++++++++
 2 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/string/moon.pkg.json b/string/moon.pkg.json
index 9e26dfeeb..a52055e50 100644
--- a/string/moon.pkg.json
+++ b/string/moon.pkg.json
@@ -1 +1,8 @@
-{}
\ No newline at end of file
+{
+    "import": [
+        {
+            "path": "moonbitlang/core/assertion",
+            "alias": "assertion"
+        }
+    ]
+}
diff --git a/string/string.mbt b/string/string.mbt
index 1f2041e78..2cba163b7 100644
--- a/string/string.mbt
+++ b/string/string.mbt
@@ -65,3 +65,15 @@ pub fn escape(self : String) -> String {
   self.escape_to(buf)
   buf.to_string()
 }
+
+test "backslash escape" {
+  let s = "\n\r\t\b\"\'\\"
+  let expected = "\\n\\r\\t\\b\\\"\\\'\\\\"
+  @assertion.assert_eq(s.escape(), expected)?
+}
+
+test "hex escape"{
+  let s = "\x11\x12\x01\x02"
+  let expected = "\\x11\\x12\\x01\\x02" 
+  @assertion.assert_eq(s.escape(), expected)?
+}