diff --git a/runner/__init__.py b/runner/__init__.py
index 4c9a205..20f1a7b 100644
--- a/runner/__init__.py
+++ b/runner/__init__.py
@@ -45,7 +45,7 @@ def pytest_collection_modifyitems(self, session, config, items):
         def _sort_by_lineno(item):
             test_id = Hierarchy(item.nodeid)
             source = Path(item.fspath)
-            return TestOrder.lineno(test_id, source)
+            return TestOrder.get_testInfo(test_id, source).lineno
 
         items.sort(key=_sort_by_lineno)
 
diff --git a/runner/sort.py b/runner/sort.py
index 1abdd26..2ff52ff 100644
--- a/runner/sort.py
+++ b/runner/sort.py
@@ -84,14 +84,21 @@ def get_hierarchy(self, name: Hierarchy) -> Hierarchy:
 
 
     @classmethod
-    def lineno(cls, test_id: Hierarchy, source: Path) -> int:
+    def get_testInfo(cls, test_id: Hierarchy, source: Path) -> TestInfo:
         """
-        Returns the line that the given test was defined on.
+        Returns the test's TestInfo (lineno, end_lineno, variants).
         """
         if test_id not in cls._cache:
             tree = parse(source.read_text(), source.name)
-            cls(Hierarchy(test_id.split("::")[0])).visit(tree)
-        return cls._cache[test_id].lineno
+            cls(Hierarchy(test_id.split("::")[0])
+                ).visit(tree)
+
+        if test_id not in cls._cache:   
+            #possibly a parametrized test. get the parametrized function's lineno instead
+            #in that case, test_id would be like path/file.py::parametrized_function[param_id]
+            test_id = Hierarchy(test_id.split('[')[0])
+
+        return cls._cache[test_id]
 
 
     @classmethod
@@ -103,14 +110,10 @@ def function_source(cls, test_id: Hierarchy, source: Path) -> str:
         :return: str of the source code of the given test.
         """
         text = source.read_text()
-        testinfo = cls._cache[test_id]
+        testinfo = cls.get_testInfo(test_id, source)
 
         lines = text.splitlines()[testinfo.lineno: testinfo.end_lineno + 1]
 
-        if test_id not in cls._cache:
-            tree = parse(text, source.name)
-            cls(Hierarchy(test_id.split("::")[0])).visit(tree)
-
         if not lines[-1]:
             lines.pop()
 
diff --git a/test/example-parametrized/example_parametrized.py b/test/example-parametrized/example_parametrized.py
new file mode 100644
index 0000000..64a7e71
--- /dev/null
+++ b/test/example-parametrized/example_parametrized.py
@@ -0,0 +1,2 @@
+def plus1(x):
+    return x + 1
\ No newline at end of file
diff --git a/test/example-parametrized/example_parametrized_test.py b/test/example-parametrized/example_parametrized_test.py
new file mode 100644
index 0000000..5a31d86
--- /dev/null
+++ b/test/example-parametrized/example_parametrized_test.py
@@ -0,0 +1,18 @@
+import pytest
+from example_parametrized import plus1
+
+params = [
+    pytest.param(1, 2, id="test1"),
+    pytest.param(2, 3, id="test2"),
+    pytest.param(3, 4, id="test3"),
+]
+
+@pytest.mark.parametrize(("x", "y"), params)
+def test_plus1_parameter(x, y):
+    assert plus1(x) == y
+
+def test_unparametrized(x=1,y=2):
+    assert x+1
+
+if __name__ == '__main__':
+    pytest.main()
diff --git a/test/example-parametrized/results.json b/test/example-parametrized/results.json
new file mode 100644
index 0000000..f2677b8
--- /dev/null
+++ b/test/example-parametrized/results.json
@@ -0,0 +1,47 @@
+{
+  "version": 3,
+  "status": "pass",
+  "tests": [
+    {
+      "name": "test plus1 parameter[test1]",
+      "status": "pass",
+      "test_code": "assert plus1(x) == y",
+      "task_id": 0,
+      "filename": "test/example-parametrized/example_parametrized_test.py",
+      "line_no": 9,
+      "duration": 9.589799446985126e-05,
+      "score": 2.5
+    },
+    {
+      "name": "test plus1 parameter[test2]",
+      "status": "pass",
+      "test_code": "assert plus1(x) == y",
+      "task_id": 0,
+      "filename": "test/example-parametrized/example_parametrized_test.py",
+      "line_no": 9,
+      "duration": 8.842398528940976e-05,
+      "score": 2.5
+    },
+    {
+      "name": "test plus1 parameter[test3]",
+      "status": "pass",
+      "test_code": "assert plus1(x) == y",
+      "task_id": 0,
+      "filename": "test/example-parametrized/example_parametrized_test.py",
+      "line_no": 9,
+      "duration": 7.641100091859698e-05,
+      "score": 2.5
+    },
+    {
+      "name": "test unparametrized",
+      "status": "pass",
+      "test_code": "assert x+1",
+      "task_id": 0,
+      "filename": "test/example-parametrized/example_parametrized_test.py",
+      "line_no": 13,
+      "duration": 7.80870032031089e-05,
+      "score": 2.5
+    }
+  ],
+  "max_score": 10
+}
\ No newline at end of file