From e1863ac64e0bb501be8dc7ef3cd0f6c565e33d35 Mon Sep 17 00:00:00 2001
From: Vardhan Patil <hi@vardhanpatil.com>
Date: Sat, 30 Dec 2023 20:14:30 +0530
Subject: [PATCH] tests/cksum: test when the --length argument is 0 or >512

---
 tests/by-util/test_cksum.rs                   | 24 +++++++++++++++++++
 tests/fixtures/cksum/length_is_zero.expected  |  2 ++
 .../cksum/length_larger_than_512.expected     |  2 ++
 3 files changed, 28 insertions(+)
 create mode 100644 tests/fixtures/cksum/length_is_zero.expected
 create mode 100644 tests/fixtures/cksum/length_larger_than_512.expected

diff --git a/tests/by-util/test_cksum.rs b/tests/by-util/test_cksum.rs
index dbf7264e8..0e1aec38d 100644
--- a/tests/by-util/test_cksum.rs
+++ b/tests/by-util/test_cksum.rs
@@ -262,3 +262,27 @@ fn test_length() {
         .succeeds()
         .stdout_is_fixture("supported_length.expected");
 }
+
+#[test]
+fn test_length_greater_than_512() {
+    new_ucmd!()
+        .arg("--length=1024")
+        .arg("--algorithm=blake2b")
+        .arg("lorem_ipsum.txt")
+        .arg("alice_in_wonderland.txt")
+        .fails()
+        .no_stdout()
+        .stderr_is_fixture("length_larger_than_512.expected");
+}
+
+#[test]
+fn test_length_is_zero() {
+    new_ucmd!()
+        .arg("--length=0")
+        .arg("--algorithm=blake2b")
+        .arg("lorem_ipsum.txt")
+        .arg("alice_in_wonderland.txt")
+        .succeeds()
+        .no_stderr()
+        .stdout_is_fixture("length_is_zero.expected");
+}
\ No newline at end of file
diff --git a/tests/fixtures/cksum/length_is_zero.expected b/tests/fixtures/cksum/length_is_zero.expected
new file mode 100644
index 000000000..97d06eb6f
--- /dev/null
+++ b/tests/fixtures/cksum/length_is_zero.expected
@@ -0,0 +1,2 @@
+BLAKE2b (lorem_ipsum.txt) = 0e97a09189e560c3789c0bff1f020166861ef857d1fbfe4574de1842e3c06cabb9575e4af6309a166158c2b408d3c038c1b49d828b35158142cdc0396d1195c3
+BLAKE2b (alice_in_wonderland.txt) = 91b8b0f0868e905ad18b8ac35e4a1dacd289857b19258ab5d1e071761af758b0134ec152d4f011fe1825ca889c80c2e072ca70eb50548c25fc49a98937515af4
diff --git a/tests/fixtures/cksum/length_larger_than_512.expected b/tests/fixtures/cksum/length_larger_than_512.expected
new file mode 100644
index 000000000..312b6230e
--- /dev/null
+++ b/tests/fixtures/cksum/length_larger_than_512.expected
@@ -0,0 +1,2 @@
+cksum: invalid length: ‘1024’
+cksum: maximum digest length for ‘BLAKE2b’ is 512 bits