Began unittests for project

Author: Lorena Mesa

test/sample_cases_test.py

@@ -0,0 +1,27 @@
+import subprocess
+import time
+from os import remove
+from pathlib import Path
+import unittest
+
+
+PROJECT_ROOT = Path(__file__).parent.absolute()
+
+def test_sample_case_one():
+    subprocess.Popen(
+        f'python3 main.py --t [email protected] --o lorenaemail',
+        cwd=f"{PROJECT_ROOT.parent}",
+        stdin=subprocess.PIPE,
+        shell=True,
+    )
+
+    time.sleep(1)
+
+    output = []
+    with open(f"{PROJECT_ROOT}/lorenaoutput.png", "rb") as f:
+        output = f.readlines(); print(output)
+        output = list(map(lambda l: l.decode("utf-8"), output))
+
+    remove(f"{PROJECT_ROOT}/lorenaoutput.png")
+
+    assert output == ['Result(value=6, parser=infix, expression="3*2")']