diff --git a/unit_tests/__init__.py b/unit_tests/__init__.py
new file mode 100644
index 000000000..e69de29bb
diff --git a/unit_tests/test_misc.py b/unit_tests/test_misc.py
new file mode 100644
index 000000000..59647b5e9
--- /dev/null
+++ b/unit_tests/test_misc.py
@@ -0,0 +1,136 @@
+import sys
+class MockAttr:
+    def __init__(self, value):
+        self.value = value
+
+
+class MockInst:
+    def __init__(self, type_, attrs):
+        self.type_ = type_
+        self.attrs = attrs
+
+sys.path.append(
+    "src/converter/schematic_converters/lib/PythonLib"
+)
+
+import misc
+
+
+def test_strip_num_from_ref_resistor():
+    assert misc.stripNumFromRef("R10") == "R"
+
+
+def test_strip_num_from_ref_capacitor():
+    assert misc.stripNumFromRef("C25") == "C"
+
+
+def test_strip_num_from_ref_transistor():
+    assert misc.stripNumFromRef("Q100") == "Q"
+
+from io import StringIO
+
+def test_skip_to_found():
+    stream = StringIO(
+        "abc\n"
+        "def\n"
+        "*symbol transistor\n"
+        "xyz\n"
+    )
+
+    result = misc.skipTo(stream, "*symbol")
+
+    assert result == "*symbol transistor"
+
+
+def test_skip_to_not_found():
+    stream = StringIO(
+        "abc\n"
+        "def\n"
+        "xyz\n"
+    )
+
+    result = misc.skipTo(stream, "*symbol")
+
+    assert result == "__ERROR__"
+
+def test_fix_inst_j_reference():
+    inst = MockInst(
+        "ANY",
+        [MockAttr("J10")]
+    )
+
+    misc.fixInst(inst)
+
+    assert inst.attrs[0].value == "J?"
+
+def test_fix_inst_m_reference():
+    inst = MockInst(
+        "ANY",
+        [MockAttr("M25")]
+    )
+
+    misc.fixInst(inst)
+
+    assert inst.attrs[0].value == "M?"
+
+def test_fix_inst_vac_source():
+    inst = MockInst(
+        "VAC",
+        [MockAttr("V1"), MockAttr("VAC")]
+    )
+
+    misc.fixInst(inst)
+
+    assert inst.attrs[1].value == "AC"
+
+def test_fix_inst_vsin_source():
+    inst = MockInst(
+        "VSIN",
+        [MockAttr("V1"), MockAttr("VSIN")]
+    )
+
+    misc.fixInst(inst)
+
+    assert inst.attrs[1].value == "SINE"
+
+def test_fix_inst_vplot2():
+    inst = MockInst(
+        "VPLOT2",
+        [MockAttr("X1"), MockAttr("VPLOT2")]
+    )
+
+    misc.fixInst(inst)
+
+    assert inst.attrs[0].value == "U?"
+    assert inst.attrs[1].value == "VPLOT8"
+
+def test_fix_inst_vprint2():
+    inst = MockInst(
+        "VPRINT2",
+        [MockAttr("X1"), MockAttr("VPRINT2")]
+    )
+
+    misc.fixInst(inst)
+
+    assert inst.attrs[0].value == "U?"
+    assert inst.attrs[1].value == "VPRINT"
+
+def test_fix_inst_agnd():
+    inst = MockInst(
+        "AGND",
+        [MockAttr("GND")]
+    )
+
+    misc.fixInst(inst)
+
+    assert inst.type_ == "GND"
+
+def test_fix_inst_egnd():
+    inst = MockInst(
+        "EGND",
+        [MockAttr("GND")]
+    )
+
+    misc.fixInst(inst)
+
+    assert inst.type_ == "GND"
\ No newline at end of file