attempt to improve coverage

Author: Yenaled

tests/test_count.py

@@ -1027,6 +1027,30 @@ def test_convert_transcripts_to_genes(self):
                     line.strip() for line in f if not line.isspace()
                 ])
 
+    def test_make_transcript_t2g(self):
+        # Create a sample transcripts.txt
+        txnames_path = os.path.join(self.temp_dir, 'transcripts.txt')
+        with open(txnames_path, 'w') as f:
+            f.write('ENST00000335137.4\n')
+            f.write('ENST00000448914.6\n')
+
+        # Define output path
+        out_path = os.path.join(self.temp_dir, 't2g.txt')
+
+        # Call function
+        result_path = count.make_transcript_t2g(txnames_path, out_path)
+
+        # Check return value
+        self.assertEqual(result_path, out_path)
+
+        # Check file contents
+        with open(out_path, 'r') as f:
+            lines = [line.strip() for line in f if line.strip()]
+            self.assertEqual(lines, [
+                'ENST00000335137.4\tENST00000335137.4',
+                'ENST00000448914.6\tENST00000448914.6'
+            ])
+
     def test_matrix_to_cellranger(self):
         out_dir = self.temp_dir
         result = count.matrix_to_cellranger(