fix(ser): Fix serializing certain escaped characters

Fixes #7.
Closes #9.

CHANGELOG.adoc

@@ -13,6 +13,7 @@
 == Fixed
 
 - fix serializing strings containing `:`
+- fix serializing certain escaped characters
 
 == [v0.2.4] - 2023-03-01
 

src/ser.rs

@@ -142,6 +142,14 @@ impl<'a> serde::ser::Serializer for &'a mut Serializer {
                         self.output.push('\\');
                         self.output.push('r');
                     }
+                    '"' => {
+                        self.output.push('\\');
+                        self.output.push('"');
+                    }
+                    '\\' => {
+                        self.output.push('\\');
+                        self.output.push('\\');
+                    }
                     c => {
                         self.output.push(c);
                     }

tests/serialize.rs

@@ -125,8 +125,15 @@ fn serialize_string() {
         ("foo\nbar", "\"foo\\nbar\""),
         ("foo\r\nbar", "\"foo\\r\\nbar\""),
         ("foo\tbar", "\"foo\\tbar\""),
-        ("foo/bar", "\"foo\\/bar\""),
+        ("foo/bar", "foo/bar"),
         ("foo\\bar", "\"foo\\\\bar\""),
+        // Regression test for #7.
+        ("scripts/mods/test\\new", "\"scripts/mods/test\\\\new\""),
+        // Regression test for #8.
+        (
+            "+002023-03-03T16:42:33.944311860Z",
+            "\"+002023-03-03T16:42:33.944311860Z\"",
+        ),
     ];
     for (value, expected) in tests {
         let expected = format!("value = {expected}\n");
@@ -152,7 +159,7 @@ fn serialize_char() {
         ('\t', "\"\\t\""),
         ('\r', "\"\\r\""),
         ('\\', "\"\\\\\""),
-        ('/', "\"\\/\""),
+        ('/', "/"),
         ('\"', "\"\\\"\""),
         ('\'', "\"'\""),
     ];