diff --git a/pyproject.toml b/pyproject.toml
index 08f6ff5..23d6685 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -35,3 +35,8 @@ where = ["src"]
 
 [tool.pytest.ini_options]
 pythonpath = ["src"]
+
+[dependency-groups]
+dev = [
+    "pytest>=8.4.2",
+]
diff --git a/tests/pdf_analyzer_test.py b/tests/pdf_analyzer_test.py
index 708c349..e522b4b 100644
--- a/tests/pdf_analyzer_test.py
+++ b/tests/pdf_analyzer_test.py
@@ -1,12 +1,19 @@
 import os
+from pathlib import Path
 from ps_helper.pdf.pdf_analyzer import PDFAnalyzer
 
-LOCAL_PDF_PATH = "test_files/scansmpl.pdf"
+TEST_DIR = Path(__file__).parent
+
+LOCAL_PDF_PATH = str(TEST_DIR / "test_files/scansmpl.pdf")
 
 REMOTE_PDF_URL = (
     "https://www.w3.org/WAI/ER/tests/xhtml/testfiles/resources/pdf/dummy.pdf"
 )
 
+PLUZ_PDF_PATH = str(TEST_DIR / "test_files/recibo_enel.pdf")
+LUZ_DEL_SUR_PDF_PATH = str(TEST_DIR / "test_files/recibo_luzdelsur.pdf")
+SEAL_PDF_PATH = str(TEST_DIR / "test_files/recibo_seal.pdf")
+
 
 def test_local_pdf():
     print("\n===== Test: Local PDF =====")
@@ -32,6 +39,103 @@ def test_remote_pdf():
     print(batch_result)
 
 
+def test_pluz_receipt():
+    """Pluz Energía bill (recibo_enel.pdf) — text-based, 2 pages."""
+    analyzer = PDFAnalyzer(ocr_enabled=True, ocr_language="eng+spa")
+    result = analyzer.extract_text_from_pdf(PLUZ_PDF_PATH)
+
+    assert result["success"] is True
+    assert result["error"] is None
+    assert result["total_pages"] == 2
+    assert result["pages_with_text"] > 0
+    assert result["ocr_used"] is False  # embedded text, no OCR needed
+
+    text = result["text"]
+    assert "0177339" in text           # N° suministro
+    assert "S820-0005693589" in text   # N° recibo
+    assert "20269985900" in text       # RUC Pluz Energía
+    assert "01065731" in text          # N° medidor
+    assert "763" in text               # consumo kWh
+    assert "0.6119" in text            # precio kWh
+    assert "466.88" in text            # cargo por energía
+    assert "604.61" in text            # total mes actual
+    assert "613.50" in text            # total a pagar
+    assert "BT5B" in text              # tarifa
+    assert "03/MAR/2026" in text       # vencimiento
+    assert "16/FEB/2026" in text       # emisión
+
+
+def test_luz_del_sur_receipt():
+    """Luz del Sur bill (recibo_luzdelsur.pdf) — text-based, 1 page."""
+    analyzer = PDFAnalyzer(ocr_enabled=True, ocr_language="eng+spa")
+    result = analyzer.extract_text_from_pdf(LUZ_DEL_SUR_PDF_PATH)
+
+    assert result["success"] is True
+    assert result["error"] is None
+    assert result["total_pages"] == 1
+    assert result["pages_with_text"] == 1
+    assert result["ocr_used"] is False  # embedded text, no OCR needed
+
+    text = result["text"]
+    assert "1536584" in text                        # N° suministro
+    assert "S106-639824" in text                    # N° recibo
+    assert "20331898008" in text                    # RUC Luz del Sur
+    assert "3296148" in text                        # N° medidor
+    assert "MIRANDA CARDENAS CARLOS AUGUSTO" in text  # titular
+    assert "09133544" in text                       # DNI
+    assert "541.30" in text                         # consumo kWh
+    assert "0.5979" in text                         # precio kWh
+    assert "323.64" in text                         # consumo de energía
+    assert "428.00" in text                         # total a pagar
+    assert "BT5B" in text                           # tarifa
+    assert "26-Feb-2026" in text                    # vencimiento
+    assert "11-Feb-2026" in text                    # emisión
+
+
+def test_seal_receipt():
+    """SEAL (Sociedad Eléctrica del Sur Oeste) bill — text-based, 2 pages.
+
+    Note: uses comma as decimal separator (e.g. 163,50 not 163.50).
+    Page 2 is a near-blank payment stub so pages_with_text may be 1.
+    """
+    analyzer = PDFAnalyzer(ocr_enabled=True, ocr_language="eng+spa")
+    result = analyzer.extract_text_from_pdf(SEAL_PDF_PATH)
+
+    assert result["success"] is True
+    assert result["error"] is None
+    assert result["total_pages"] == 2
+    assert result["pages_with_text"] >= 1
+    assert result["ocr_used"] is False  # embedded text, no OCR needed
+
+    text = result["text"]
+    assert "109134" in text                     # N° contrato
+    assert "34818910" in text                   # N° recibo
+    assert "SE0134" in text                     # sistema eléctrico (RUC is in header image, not text)
+    assert "MENDOZA CONDORI GENARA" in text     # titular
+    assert "AREQUIPA" in text                   # provincia
+    assert "177,00" in text                     # consumo kWh
+    assert "0,6801" in text                     # precio kWh
+    assert "120,38" in text                     # cargo energía
+    assert "163,50" in text                     # total a pagar
+    assert "BT5B" in text                       # tarifa
+    assert "02/02/2026" in text                 # emisión
+    assert "17/02/2026" in text                 # vencimiento
+
+
+def test_receipts_batch():
+    """All three receipts processed together via extract_text_batch."""
+    analyzer = PDFAnalyzer(ocr_enabled=False)
+    results = analyzer.extract_text_batch([PLUZ_PDF_PATH, LUZ_DEL_SUR_PDF_PATH, SEAL_PDF_PATH])
+
+    assert len(results) == 3
+    assert all(r["success"] for r in results)
+
+    pluz, lds, seal = results
+    assert "0177339" in pluz["text"]
+    assert "1536584" in lds["text"]
+    assert "109134" in seal["text"]
+
+
 if __name__ == "__main__":
     if not os.path.exists(LOCAL_PDF_PATH):
         print(f"PDF not found. Invalid path {LOCAL_PDF_PATH}")
diff --git a/tests/test_files/recibo_enel.pdf b/tests/test_files/recibo_enel.pdf
new file mode 100644
index 0000000..6490201
Binary files /dev/null and b/tests/test_files/recibo_enel.pdf differ
diff --git a/tests/test_files/recibo_luzdelsur.pdf b/tests/test_files/recibo_luzdelsur.pdf
new file mode 100644
index 0000000..658ec32
Binary files /dev/null and b/tests/test_files/recibo_luzdelsur.pdf differ
diff --git a/tests/test_files/recibo_seal.pdf b/tests/test_files/recibo_seal.pdf
new file mode 100644
index 0000000..74f4efe
Binary files /dev/null and b/tests/test_files/recibo_seal.pdf differ