Increase resilience of web API tests

Author: MattiSG

tests/web_api/test_variables.py

@@ -94,8 +94,9 @@ def test_variable_formula_github_link():
 
 
 def test_variable_formula_content():
-    formula_code = "def formula(person, period, parameters):\n    \"\"\"\n    Income tax.\n\n    The formula to compute the income tax for a given person at a given period\n    \"\"\"\n    return person(\"salary\", period) * parameters(period).taxes.income_tax_rate\n"
-    assert variable['formulas']['0001-01-01']['content'] == formula_code
+    content = variable['formulas']['0001-01-01']['content']
+    assert "def formula(person, period, parameters):" in content
+    assert "return person(\"salary\", period) * parameters(period).taxes.income_tax_rate" in content
 
 
 def test_null_values_are_dropped():
@@ -157,4 +158,6 @@ def test_variable_documentation():
     variable = json.loads(response.data.decode('utf-8'))
     assert variable['documentation'] == "This allowance was introduced on the 1st of Jan 1980.\nIt disappeared in Dec 2016."
 
-    assert variable['formulas']['1980-01-01']['documentation'] == "\nHousing allowance.\n\nThis allowance was introduced on the 1st of Jan 1980.\nCalculating it before this date will always return the variable default value, 0.\n\nTo compute this allowance, the 'rent' value must be provided for the same month,\nbut 'housing_occupancy_status' is not necessary.\n"
+    formula_documentation = variable['formulas']['1980-01-01']['documentation']
+    assert "Housing allowance." in formula_documentation
+    assert "Calculating it before this date will always return the variable default value, 0." in formula_documentation