refactor(test_parameters): use simple_param fixture in test_repr

Author: swastim01

tests/unit/test_parameters/conftest.py

@@ -1,6 +1,8 @@
 import numpy as np
 import pytest
 
+import pybamm
+
 
 @pytest.fixture
 def assert_is_ndarray():
@@ -14,3 +16,8 @@ def _assert(obj):
             assert isinstance(obj, np.ndarray)
 
     return _assert
+
+
+@pytest.fixture
+def simple_param():
+    return pybamm.ParameterValues({"a": 1})

tests/unit/test_parameters/test_parameter_values.py

@@ -41,19 +41,18 @@ def test_init(self):
         with pytest.raises(ValueError, match="'Junk' is not a valid parameter set."):
             pybamm.ParameterValues("Junk")
 
-    def test_repr(self):
-        param = pybamm.ParameterValues({"a": 1})
-        assert "'a': 1" in repr(param)
-        assert param._ipython_key_completions_() == [
+    def test_repr(self, simple_param):
+        assert "'a': 1" in repr(simple_param)
+        assert simple_param._ipython_key_completions_() == [
             "Ideal gas constant [J.K-1.mol-1]",
             "Faraday constant [C.mol-1]",
             "Boltzmann constant [J.K-1]",
             "Electron charge [C]",
             "a",
         ]
 
-    def test_eq(self):
-        assert pybamm.ParameterValues({"a": 1}) == pybamm.ParameterValues({"a": 1})
+    def test_eq(self, simple_param):
+        assert simple_param == pybamm.ParameterValues({"a": 1})
 
     def test_update(self):
         # equate values