tests: verify --help/--version exit codes on /dev/full, csplit empty pattern

Author: sylvestre

tests/by-util/test_csplit.rs

@@ -1583,3 +1583,11 @@ fn test_write_error_dev_full_keep_files() {
     assert!(at.file_exists("xx00"));
     assert_eq!(at.read("xx00"), "1\n");
 }
+
+#[test]
+fn test_empty_regex_pattern() {
+    // '//' uses the empty regex (matches beginning of each line)
+    let (at, mut ucmd) = at_and_ucmd!();
+    at.write("input", "hello\nworld\n");
+    ucmd.args(&["input", "//"]).succeeds();
+}

tests/by-util/test_env.rs

@@ -2032,3 +2032,17 @@ fn test_env_disallow_double_underscore_all() {
         .fails()
         .stderr_contains("invalid signal");
 }
+
+#[test]
+#[cfg(target_os = "linux")]
+fn test_help_version_dev_full_exit_code() {
+    use std::fs::OpenOptions;
+    use uutests::new_ucmd;
+    for arg in ["--help", "--version"] {
+        let dev_full = OpenOptions::new().write(true).open("/dev/full").unwrap();
+        new_ucmd!()
+            .arg(arg)
+            .set_stdout(dev_full)
+            .fails_with_code(125);
+    }
+}

tests/by-util/test_expr.rs

@@ -2007,3 +2007,14 @@ fn test_emoji_operations() {
         .succeeds()
         .stdout_only("1\n");
 }
+
+#[test]
+#[cfg(target_os = "linux")]
+fn test_help_version_dev_full_exit_code() {
+    use std::fs::OpenOptions;
+    use uutests::new_ucmd;
+    for arg in ["--help", "--version"] {
+        let dev_full = OpenOptions::new().write(true).open("/dev/full").unwrap();
+        new_ucmd!().arg(arg).set_stdout(dev_full).fails_with_code(3);
+    }
+}

tests/by-util/test_ls.rs

@@ -7244,3 +7244,14 @@ fn test_ls_a_dotdot_no_error_on_wasi() {
         .stdout_contains("..")
         .no_stderr();
 }
+
+#[test]
+#[cfg(target_os = "linux")]
+fn test_help_version_dev_full_exit_code() {
+    use std::fs::OpenOptions;
+    use uutests::new_ucmd;
+    for arg in ["--help", "--version"] {
+        let dev_full = OpenOptions::new().write(true).open("/dev/full").unwrap();
+        new_ucmd!().arg(arg).set_stdout(dev_full).fails_with_code(2);
+    }
+}

tests/by-util/test_sort.rs

@@ -2961,3 +2961,14 @@ e f 5436 down data path1 path2 path3 path4 path5\n";
 }
 
 /* spell-checker: enable */
+
+#[test]
+#[cfg(target_os = "linux")]
+fn test_help_version_dev_full_exit_code() {
+    use std::fs::OpenOptions;
+    use uutests::new_ucmd;
+    for arg in ["--help", "--version"] {
+        let dev_full = OpenOptions::new().write(true).open("/dev/full").unwrap();
+        new_ucmd!().arg(arg).set_stdout(dev_full).fails_with_code(2);
+    }
+}

tests/by-util/test_test.rs

@@ -1073,3 +1073,16 @@ fn test_unary_op_as_literal_in_three_arg_form() {
     new_ucmd!().args(&["-f", "=", "a"]).fails_with_code(1);
     new_ucmd!().args(&["-f", "=", "a", "-o", "b"]).succeeds();
 }
+
+#[test]
+#[cfg(target_os = "linux")]
+fn test_lbracket_help_dev_full_exit_code() {
+    use std::fs::OpenOptions;
+    use uutests::util::TestScenario;
+    let dev_full = OpenOptions::new().write(true).open("/dev/full").unwrap();
+    TestScenario::new("[")
+        .ucmd()
+        .arg("--help")
+        .set_stdout(dev_full)
+        .fails_with_code(2);
+}

tests/by-util/test_tty.rs

@@ -95,3 +95,13 @@ fn test_version_pipe_no_stderr() {
     child.close_stdout();
     child.wait().unwrap().no_stderr();
 }
+
+#[test]
+#[cfg(target_os = "linux")]
+fn test_help_version_dev_full_exit_code() {
+    use std::fs::OpenOptions;
+    for arg in ["--help", "--version"] {
+        let dev_full = OpenOptions::new().write(true).open("/dev/full").unwrap();
+        new_ucmd!().arg(arg).set_stdout(dev_full).fails_with_code(3);
+    }
+}