add glassdoor (#66)

src/tests/test_glassdoor.py

@@ -0,0 +1,11 @@
+from ..jobspy import scrape_jobs
+import pandas as pd
+
+
+def test_indeed():
+    result = scrape_jobs(
+        site_name="glassdoor", search_term="software engineer", country_indeed="USA"
+    )
+    assert (
+        isinstance(result, pd.DataFrame) and not result.empty
+    ), "Result should be a non-empty DataFrame"