fix doctests

Author: abr-egn

src/raw/array_buf.rs

@@ -65,14 +65,14 @@ impl RawArrayBuf {
     ///
     /// ```
     /// # use bson::error::Error;
-    /// use bson::raw::{RawArrayBuf, RawDocumentBuf};
+    /// use bson::raw::{cstr, RawArrayBuf, RawDocumentBuf};
     ///
     /// let mut array = RawArrayBuf::new();
     /// array.push("a string");
     /// array.push(12_i32);
     ///
     /// let mut doc = RawDocumentBuf::new();
-    /// doc.append("a key", "a value");
+    /// doc.append(cstr!("a key"), "a value");
     /// array.push(doc.clone());
     ///
     /// let mut iter = array.into_iter();

src/raw/document.rs

@@ -388,18 +388,18 @@ impl RawDocument {
     /// the key corresponds to a value which isn't a regex.
     ///
     /// ```
-    /// use bson::{rawdoc, Regex};
+    /// use bson::{rawdoc, Regex, raw::cstr};
     ///
     /// let doc = rawdoc! {
     ///     "regex": Regex {
-    ///         pattern: r"end\s*$".into(),
-    ///         options: "i".into(),
+    ///         pattern: cstr!(r"end\s*$").into(),
+    ///         options: cstr!("i").into(),
     ///     },
     ///     "bool": true,
     /// };
     ///
-    /// assert_eq!(doc.get_regex("regex")?.pattern, r"end\s*$");
-    /// assert_eq!(doc.get_regex("regex")?.options, "i");
+    /// assert_eq!(doc.get_regex("regex")?.pattern, cstr!(r"end\s*$"));
+    /// assert_eq!(doc.get_regex("regex")?.options, cstr!("i"));
     /// assert!(doc.get_regex("bool").is_err());
     /// assert!(doc.get_regex("unknown").is_err());
     /// # Ok::<(), Box<dyn std::error::Error>>(())

src/raw/document_buf.rs

@@ -183,17 +183,17 @@ impl RawDocumentBuf {
     /// the documentation for [BindRawBsonRef] for more details.
     /// ```
     /// # use bson::error::Error;
-    /// use bson::{doc, raw::{RawBsonRef, RawDocumentBuf}};
+    /// use bson::{doc, raw::{cstr, RawBsonRef, RawDocumentBuf}};
     ///
     /// let mut doc = RawDocumentBuf::new();
     /// // `&str` and `i32` both convert to `RawBsonRef`
-    /// doc.append("a string", "some string");
-    /// doc.append("an integer", 12_i32);
+    /// doc.append(cstr!("a string"), "some string");
+    /// doc.append(cstr!("an integer"), 12_i32);
     ///
     /// let mut subdoc = RawDocumentBuf::new();
-    /// subdoc.append("a key", true);
-    /// doc.append("a borrowed document", &subdoc);
-    /// doc.append("an owned document", subdoc);
+    /// subdoc.append(cstr!("a key"), true);
+    /// doc.append(cstr!("a borrowed document"), &subdoc);
+    /// doc.append(cstr!("an owned document"), subdoc);
     ///
     /// let expected = doc! {
     ///     "a string": "some string",