stworzono test dla cyfr

KonwersjaLiter2/src/test/java/pl/dmcs/FileConverterTest.java

@@ -78,6 +78,25 @@ public class FileConverterTest {
 
     }
 
+    @Test
+    void  textConvertDigitsOnly() throws IOException {
+        Path digitsFilePath = Paths.get("src/main/resources/digits.txt");
+        Files.writeString(digitsFilePath, "1234567890\n0987654321\n");
+
+        FileConverter converter = new FileConverter();
+        converter.convertToUpperCase(digitsFilePath.toString());
+
+        String actualContent = Files.readString(digitsFilePath);
+        actualContent = actualContent.replace("\r\n", "\n");
+        String expectedContent = "1234567890\n0987654321\n";
+
+        assertEquals(expectedContent, actualContent);
+        Files.deleteIfExists(digitsFilePath);
+    }
+
+
+
+
 
 
 }