diff --git a/pyproject.toml b/pyproject.toml
index b498de9..d241ae3 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ version = "0.1.0"
 description = "Port of the Ziffers numerical notation for Python"
 authors = [
     {name = "Raphaël Forment", email="raphael.forment@gmail.com"},
-    {name = "Miika Alonen" email = "amiika@gmail.com"}
+    {name = "Miika Alonen", email = "amiika@gmail.com"}
 ]
 license = {file = "LICENSE.txt"}
 readme = "README.md"
@@ -18,8 +18,8 @@ classifiers = [
 
 dependencies = [
     "lark>=1.1.5",
-    "rich>=12.6.0"
-    "pytest=>7.2.1"
+    "rich>=12.6.0",
+    "pytest=>7.2.1",
 ]
 
 [project.urls]
@@ -31,4 +31,3 @@ repository = "https://github.com/Bubobubobubobubo/ziffers-python"
 line-length = 88
 target_version = ['py310']
 include = '\.pyi?$'
-exclude = '''
diff --git a/tests/__init__.py b/tests/__init__.py
index a4e4a35..8b13789 100644
--- a/tests/__init__.py
+++ b/tests/__init__.py
@@ -1 +1 @@
-import ziffers
\ No newline at end of file
+
diff --git a/tests/__pycache__/__init__.cpython-311.pyc b/tests/__pycache__/__init__.cpython-311.pyc
new file mode 100644
index 0000000..ce98779
Binary files /dev/null and b/tests/__pycache__/__init__.cpython-311.pyc differ
diff --git a/tests/__pycache__/test_parser.cpython-311-pytest-7.2.1.pyc b/tests/__pycache__/test_parser.cpython-311-pytest-7.2.1.pyc
new file mode 100644
index 0000000..c36b66e
Binary files /dev/null and b/tests/__pycache__/test_parser.cpython-311-pytest-7.2.1.pyc differ
diff --git a/tests/run_tests.py b/tests/run_tests.py
deleted file mode 100644
index b69c9aa..0000000
--- a/tests/run_tests.py
+++ /dev/null
@@ -1,13 +0,0 @@
-import pytest
-from ziffers import *
-
-@pytest.mark.parametrize(
-    "pattern",
-    [
-        "1 2 3",
-        "(1 (2 3))"
-        "q 2 q2 eq.4"
-    ],
-)
-def test_list_arithmetic(pattern: str):
-    assert parse_expression(pattern).text == pattern
\ No newline at end of file
diff --git a/tests/test_parser.py b/tests/test_parser.py
new file mode 100644
index 0000000..8f454a1
--- /dev/null
+++ b/tests/test_parser.py
@@ -0,0 +1,33 @@
+from ziffers import *
+
+def test_can_parse():
+    expressions = [
+            "[1 [2 3]]",
+            "(1 (1,3) 1..3)",
+            "_^ q _qe^3 qww_4 _123 <1 2>",
+            "q _2 _ 3 ^ 343",
+            "2 qe2 e4",
+            "q 2 <3 343>",
+            "q (2 <3 343 (3 4)>)",
+    ]
+    results = []
+    for expression in expressions:
+        try:
+            print(f"Parsing expression: {expression}")
+            result = parse_expression(expression)
+            results.append(True)
+        except Exception as e:
+            print(e)
+            results.append(False)
+
+    # Return true if all the results are true (succesfully parsed)
+    print(results)
+    assert all(results)
+
+#print(ziffers_parser.parse("[1 [2 3]]"))
+#print(ziffers_parser.parse("(1 (1,3) 1..3)"))
+#print(ziffers_parser.parse("_^ q _qe^3 qww_4 _123 <1 2>"))
+#print(ziffers_parser.parse("q _2 _ 3 ^ 343"))
+#print(ziffers_parser.parse("2 qe2 e4").values)
+#print(ziffers_parser.parse("q 2 <3 343>"))
+#print(ziffers_parser.parse("q (2 <3 343 (3 4)>)"))