From c4c3a354f84ff9786453b1d7ae5cda2e328ddcf4 Mon Sep 17 00:00:00 2001
From: Ideflop <94184575+Ideflop@users.noreply.github.com>
Date: Tue, 6 Jun 2023 22:03:44 +0200
Subject: [PATCH] tests/more: test argument --from-line

---
 tests/by-util/test_more.rs | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

diff --git a/tests/by-util/test_more.rs b/tests/by-util/test_more.rs
index 15388bbf6..d94a92185 100644
--- a/tests/by-util/test_more.rs
+++ b/tests/by-util/test_more.rs
@@ -45,6 +45,40 @@ fn test_invalid_arg() {
     }
 }
 
+#[test]
+fn test_argument_from_file() {
+    if std::io::stdout().is_terminal() {
+        let scene = TestScenario::new(util_name!());
+        let at = &scene.fixtures;
+
+        let file = "test_file";
+
+        at.write(file, "1\n2");
+
+        // output all lines
+        scene
+            .ucmd()
+            .arg("-F")
+            .arg("0")
+            .arg(file)
+            .succeeds()
+            .no_stderr()
+            .stdout_contains("1")
+            .stdout_contains("2");
+
+        // output only the second line
+        scene
+            .ucmd()
+            .arg("-F")
+            .arg("2")
+            .arg(file)
+            .succeeds()
+            .no_stderr()
+            .stdout_contains("2")
+            .stdout_does_not_contain("1");
+    }
+}
+
 #[test]
 fn test_more_dir_arg() {
     // Run the test only if there's a valid terminal, else do nothing