test(gencat): add tests for gencat empty file

Author: rishadbaniya

i18n/gencat.rs

@@ -773,7 +773,7 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
     match MessageCatalog::parse(&args.msgfile, catfile_catalog) {
         Ok(catalog) => {
             let mut buffer = Cursor::new(Vec::new());
-            catalog.write_catfile_another(&mut buffer)?;
+            catalog.write_catfile(&mut buffer)?;
 
             if catfile_path_str == "-" {
                 io::stdout().write_all(&buffer.get_ref())?;

i18n/tests/gencat/empty_message_file.msg

@@ -0,0 +1,52 @@
+//
+// Copyright (c) 2024 Jeff Garzik
+//
+// This file is part of the posixutils-rs project covered under
+// the MIT License.  For the full license text, please see the LICENSE
+// file in the root directory of this project.
+// SPDX-License-Identifier: MIT
+//
+
+use plib::{run_test_u8, TestPlanU8};
+use std::env;
+use std::path::PathBuf;
+use std::{fs::File, io::Read};
+
+fn gencat_test(args: &[&str], expected_output: Vec<u8>, expected_error: Vec<u8>) {
+    let str_args: Vec<String> = args.iter().map(|s| String::from(*s)).collect();
+    run_test_u8(TestPlanU8 {
+        cmd: String::from("gencat"),
+        args: str_args,
+        stdin_data: Vec::new(),
+        expected_out: expected_output,
+        expected_err: expected_error,
+        expected_exit_code: 0,
+    })
+}
+
+#[test]
+fn gencat_empty_message_file() {
+    let cargo_manifest_dir = PathBuf::from(env::var("CARGO_MANIFEST_DIR").unwrap());
+    let msg_file = cargo_manifest_dir.join("tests/gencat/empty_message_file.msg");
+
+    #[cfg(not(target_os = "macos"))]
+    let expected_cat_file =
+        cargo_manifest_dir.join("tests/gencat/empty_message_file_gnu_catfile.cat");
+
+    #[cfg(target_os = "macos")]
+    let expected_cat_file =
+        cargo_manifest_dir.join("tests/gencat/empty_message_file_osx_catfile.cat");
+
+    //    let encoded_file = cargo_manifest_dir.join("tests/uucode/sample_historical_encoded.txt");
+    let mut expected_output: Vec<u8> = Vec::new();
+    File::open(&expected_cat_file)
+        .unwrap()
+        .read_to_end(&mut expected_output)
+        .unwrap();
+
+    gencat_test(
+        &["-", msg_file.to_str().unwrap()],
+        expected_output,
+        Vec::new(),
+    );
+}

i18n/tests/gencat/empty_message_file_gnu_catfile.cat

@@ -0,0 +1,6 @@
+$set 1
+1 This is first message
+2 This is second message
+$set 2
+1 This is third message
+2 This is fourth message

i18n/tests/gencat/empty_message_file_osx_catfile.cat

@@ -0,0 +1,10 @@
+//
+// Copyright (c) 2024 Jeff Garzik
+//
+// This file is part of the posixutils-rs project covered under
+// the MIT License.  For the full license text, please see the LICENSE
+// file in the root directory of this project.
+// SPDX-License-Identifier: MIT
+//
+
+mod gencat;