feat(back-end): db connections and other stuff

backend/src/test/java/com/printcalculator/service/GCodeParserTest.java

@@ -52,6 +52,26 @@ class GCodeParserTest {
         assertEquals(750, stats.printTimeSeconds()); // 12*60 + 30
         assertEquals(5.0, stats.filamentWeightGrams(), 0.001);
 
+        tempFile.delete();
+    }
+    @Test
+    void parse_withExtraTextInTimeLine_returnsCorrectStats() throws IOException {
+        // Arrange
+        File tempFile = File.createTempFile("test_extra", ".gcode");
+        try (FileWriter writer = new FileWriter(tempFile)) {
+            writer.write("; generated by OrcaSlicer\n");
+            // Simulate the variation that was causing issues
+            writer.write("; estimated printing time (normal mode) = 1h 2m 3s\n"); 
+            writer.write("; filament used [g] = 10.5\n");
+            writer.write("; filament used [mm] = 3000.0\n");
+        }
+
+        GCodeParser parser = new GCodeParser();
+        PrintStats stats = parser.parse(tempFile);
+
+        assertEquals(3723L, stats.printTimeSeconds()); 
+        assertEquals("1h 2m 3s", stats.printTimeFormatted());
+
         tempFile.delete();
     }
 }