diff --git a/tests/commands_test.rs b/tests/commands_test.rs
index 4d3c9d008..33e440f93 100644
--- a/tests/commands_test.rs
+++ b/tests/commands_test.rs
@@ -36,8 +36,8 @@ fn save_figures_out_intelligently_where_to_write_out_with_metadata() {
                 description = "A shell for the GitHub era"
                 license = "ISC"
                 edition = "2018"
-            "#)
-        ]);
+            "#,
+        )]);
 
         let subject_file = dirs.test().join("cargo_sample.toml");
 
@@ -66,3 +66,32 @@ fn save_can_write_out_csv() {
         assert!(actual.contains("[list list],A shell for the GitHub era,2018,ISC,nu,0.2.0"));
     })
 }
+
+#[test]
+fn save_can_write_out_bson() {
+    Playground::setup("save_test_3", |dirs, _| {
+        let expected_file = dirs.test().join("cargo_sample.bson");
+
+        nu!(
+            cwd: dirs.root(),
+            "open {}/cargo_sample.toml | inc package.version --minor | get package | save save_test_3/cargo_sample.bson",
+            dirs.formats()
+        );
+
+        let actual = h::file_contents_binary(expected_file);
+        assert!(
+            actual
+                == vec![
+                    168, 0, 0, 0, 4, 97, 117, 116, 104, 111, 114, 115, 0, 43, 0, 0, 0, 2, 48, 0,
+                    31, 0, 0, 0, 89, 101, 104, 117, 100, 97, 32, 75, 97, 116, 122, 32, 60, 119,
+                    121, 99, 97, 116, 115, 64, 103, 109, 97, 105, 108, 46, 99, 111, 109, 62, 0, 0,
+                    2, 100, 101, 115, 99, 114, 105, 112, 116, 105, 111, 110, 0, 27, 0, 0, 0, 65,
+                    32, 115, 104, 101, 108, 108, 32, 102, 111, 114, 32, 116, 104, 101, 32, 71, 105,
+                    116, 72, 117, 98, 32, 101, 114, 97, 0, 2, 101, 100, 105, 116, 105, 111, 110, 0,
+                    5, 0, 0, 0, 50, 48, 49, 56, 0, 2, 108, 105, 99, 101, 110, 115, 101, 0, 4, 0, 0,
+                    0, 73, 83, 67, 0, 2, 110, 97, 109, 101, 0, 3, 0, 0, 0, 110, 117, 0, 2, 118,
+                    101, 114, 115, 105, 111, 110, 0, 6, 0, 0, 0, 48, 46, 50, 46, 48, 0, 0
+                ]
+        );
+    })
+}
diff --git a/tests/helpers/mod.rs b/tests/helpers/mod.rs
index 538959e9e..c27738c79 100644
--- a/tests/helpers/mod.rs
+++ b/tests/helpers/mod.rs
@@ -307,6 +307,14 @@ pub fn file_contents(full_path: impl AsRef<Path>) -> String {
     contents
 }
 
+pub fn file_contents_binary(full_path: impl AsRef<Path>) -> Vec<u8> {
+    let mut file = std::fs::File::open(full_path.as_ref()).expect("can not open file");
+    let mut contents = Vec::new();
+    file.read_to_end(&mut contents)
+        .expect("can not read file");
+    contents
+}
+
 pub fn line_ending() -> String {
     #[cfg(windows)]
     {