diff --git a/tests/by-util/test_basenc.rs b/tests/by-util/test_basenc.rs
index c9e15ef1f..38e4ede71 100644
--- a/tests/by-util/test_basenc.rs
+++ b/tests/by-util/test_basenc.rs
@@ -2,6 +2,8 @@
 //
 // For the full copyright and license information, please view the LICENSE
 // file that was distributed with this source code.
+
+//spell-checker: ignore (encodings) lsbf msbf
 use crate::common::util::TestScenario;
 
 #[test]
@@ -31,3 +33,143 @@ fn test_invalid_input() {
         .fails()
         .stderr_only(error_message);
 }
+
+#[test]
+fn test_base64() {
+    new_ucmd!()
+        .arg("--base64")
+        .pipe_in("to>be?")
+        .succeeds()
+        .no_stderr()
+        .stdout_only("dG8+YmU/\n"); // spell-checker:disable-line
+}
+
+#[test]
+fn test_base64_decode() {
+    new_ucmd!()
+        .args(&["--base64", "-d"])
+        .pipe_in("dG8+YmU/") // spell-checker:disable-line
+        .succeeds()
+        .no_stderr()
+        .stdout_only("to>be?");
+}
+
+#[test]
+fn test_base64url() {
+    new_ucmd!()
+        .arg("--base64url")
+        .pipe_in("to>be?")
+        .succeeds()
+        .no_stderr()
+        .stdout_only("dG8-YmU_\n"); // spell-checker:disable-line
+}
+
+#[test]
+fn test_base64url_decode() {
+    new_ucmd!()
+        .args(&["--base64url", "-d"])
+        .pipe_in("dG8-YmU_") // spell-checker:disable-line
+        .succeeds()
+        .no_stderr()
+        .stdout_only("to>be?");
+}
+
+#[test]
+fn test_base32() {
+    new_ucmd!()
+        .arg("--base32")
+        .pipe_in("nice>base?")
+        .succeeds()
+        .no_stderr()
+        .stdout_only("NZUWGZJ6MJQXGZJ7\n"); // spell-checker:disable-line
+}
+
+#[test]
+fn test_base32_decode() {
+    new_ucmd!()
+        .args(&["--base32", "-d"])
+        .pipe_in("NZUWGZJ6MJQXGZJ7") // spell-checker:disable-line
+        .succeeds()
+        .no_stderr()
+        .stdout_only("nice>base?");
+}
+
+#[test]
+fn test_base32hex() {
+    new_ucmd!()
+        .arg("--base32hex")
+        .pipe_in("nice>base?")
+        .succeeds()
+        .no_stderr()
+        .stdout_only("DPKM6P9UC9GN6P9V\n"); // spell-checker:disable-line
+}
+
+#[test]
+fn test_base32hex_decode() {
+    new_ucmd!()
+        .args(&["--base32hex", "-d"])
+        .pipe_in("DPKM6P9UC9GN6P9V") // spell-checker:disable-line
+        .succeeds()
+        .no_stderr()
+        .stdout_only("nice>base?");
+}
+
+#[test]
+fn test_base16() {
+    new_ucmd!()
+        .arg("--base16")
+        .pipe_in("Hello, World!")
+        .succeeds()
+        .no_stderr()
+        .stdout_only("48656C6C6F2C20576F726C6421\n");
+}
+
+#[test]
+fn test_base16_decode() {
+    new_ucmd!()
+        .args(&["--base16", "-d"])
+        .pipe_in("48656C6C6F2C20576F726C6421")
+        .succeeds()
+        .no_stderr()
+        .stdout_only("Hello, World!");
+}
+
+#[test]
+fn test_base2msbf() {
+    new_ucmd!()
+        .arg("--base2msbf")
+        .pipe_in("msbf")
+        .succeeds()
+        .no_stderr()
+        .stdout_only("01101101011100110110001001100110\n");
+}
+
+#[test]
+fn test_base2msbf_decode() {
+    new_ucmd!()
+        .args(&["--base2msbf", "-d"])
+        .pipe_in("01101101011100110110001001100110")
+        .succeeds()
+        .no_stderr()
+        .stdout_only("msbf");
+}
+
+#[test]
+fn test_base2lsbf() {
+    new_ucmd!()
+        .arg("--base2lsbf")
+        .pipe_in("lsbf")
+        .succeeds()
+        .no_stderr()
+        .stdout_only("00110110110011100100011001100110\n");
+}
+
+#[test]
+fn test_base2lsbf_decode() {
+    new_ucmd!()
+        .args(&["--base2lsbf", "-d"])
+        .pipe_in("00110110110011100100011001100110")
+        .succeeds()
+        .no_stderr()
+        .stdout_only("lsbf");
+}