3 files changed, 40 insertions, 3 deletions
diff --git a/tests/qc/test_cells.py b/tests/qc/test_cells.py
index 5ff5813..1c6c3f6 100644
--- a/tests/qc/test_cells.py
+++ b/tests/qc/test_cells.py
@@ -10,7 +10,7 @@ from quality_control.average import invalid_value as avg_invalid_value
 from quality_control.standard_error import invalid_value as se_invalid_value
 
 @given(num_str=st.from_regex(
-    r"^(?!(([0-9]+\.([0-9]{3}|[0-9]{6,}))|0+\.?0*)).*", fullmatch=True))
+    r"^(?!(([0-9]+\.([0-9]{3}|[0-9]{6,}))|[0-9]+\.?0*)).*", fullmatch=True))
 def test_cell_value_errors_with_invalid_inputs2(num_str):
     """
     GIVEN: `num_str` is an arbitrary string that is an invalid input,
@@ -30,7 +30,7 @@ def test_cell_value_errors_with_invalid_inputs2(num_str):
 
 @given(num_str=st.from_regex(
     r"^[0-9]+\.([0-9]{1,2}|[0-9]{4,}$)", fullmatch=True).filter(
-        lambda param: not re.match(r"0\.0+", param)))
+        lambda param: not re.match(r"^[0-9]+\.0+$", param)))
 def test_cell_average_value_errors_if_not_three_decimal_places2(num_str):
     """
     GIVEN: `num_str` is a string representing a number with less than or more
@@ -57,7 +57,7 @@ def test_cell_average_value_pass_if_three_decimal_places(num_str):
     assert avg_invalid_value(line, col, num_str) is None
 
 @given(num_str=st.from_regex(r"^[0-9]+\.([0-9]{0,5}$)", fullmatch=True).filter(
-    lambda param: not re.match(r"0\.0+", param)))
+    lambda param: not re.match(r"^[0-9]+\.?0*$", param)))
 def test_cell_standard_error_value_errors_if_less_than_six_decimal_places2(num_str):
     """
     GIVEN: `num_str` is a string representing a number with less than six
diff --git a/tests/qc/test_cells_average.py b/tests/qc/test_cells_average.py
new file mode 100644
index 0000000..c2b382a
--- /dev/null
+++ b/tests/qc/test_cells_average.py
@@ -0,0 +1,17 @@
+import re
+from random import randint
+from hypothesis import given
+from hypothesis import strategies as st
+
+from quality_control.average import invalid_value as avg_invalid_value
+
+@given(num_str=st.from_regex(r"^[0-9]+$", fullmatch=True))
+def test_cell_average_value_pass_if_no_decimal_places(num_str):
+    """
+    GIVEN: `num_str` is a string representing a number with no decimal places,
+      e.g. 2, 39, 8420
+    WHEN: `num_str` is provided as an argument to `avg_invalid_value` function,
+    THEN: `avg_invalid_value` returns `None`
+    """
+    line, col = randint(0, 100), randint(0, 20)
+    assert avg_invalid_value(line, col, num_str) is None
diff --git a/tests/qc/test_cells_standard_error.py b/tests/qc/test_cells_standard_error.py
new file mode 100644
index 0000000..aa25aa8
--- /dev/null
+++ b/tests/qc/test_cells_standard_error.py
@@ -0,0 +1,20 @@
+import re
+from random import randint
+
+
+from hypothesis import given
+from hypothesis import strategies as st
+
+from quality_control.standard_error import invalid_value
+
+@given(num_str=st.from_regex(r"^[0-9]+\.?0*", fullmatch=True))
+def test_cell_standard_error_value_errors_if_less_than_six_decimal_places2(num_str):
+    """
+    GIVEN: `num_str` is a string representing a whole number (e.g 5, 33, 5453
+        etc) or a number with all zeroes for the decimals (e.g 0.0, 19.00000,
+        45842.00 etc)
+    WHEN: `num_str` is provided as an argument to `se_invalid_value` function,
+    THEN: `se_invalid_value` returns a `None`.
+    """
+    line, col = randint(0, 100), randint(0, 20)
+    assert invalid_value(line, col, num_str) is None