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16 changes: 16 additions & 0 deletions salmon/test.py
Original file line number Diff line number Diff line change
Expand Up @@ -240,6 +240,22 @@ def test_fit(self):

self.assertTrue(all(diff.apply(all, 1)))

def test_fit2(self):
explanatory = Q("Age") + Q("Expenses") + Q("Vacancy") + Q("Sqft")
response = Q("Rental")
model = LinearModel(explanatory, response)
results = model.fit(commprop)[["Coefficient", "SE", "t", "p"]].sort_index()
expected = pd.DataFrame({"Coefficient" : [12.20, -1.420336e-01, 2.820165e-01, 6.193435e-03, 7.924302e-06 ],
"SE" : [5.779562e-01, 2.134261e-02, 6.317235e-02, 1.086813e-02, 1.384775e-06],
"t" : [21.1098807, -6.6549332, 4.4642400, 0.5698714, 5.7224457],
"p" : [1.601720e-33, 3.894322e-09, 2.747396e-05, 5.704457e-01, 1.975990e-07]},
index = ["Intercept", "Age", "Expenses", "Vacancy", "Sqft"]).sort_index()
diff = results - expected
diff["Coefficient"] = floatComparison(0, diff["Coefficient"], 0.001)
diff["SE"] = floatComparison(0, diff["SE"], 0.000001)
diff["t"] = floatComparison(0, diff["t"], 0.01)
diff["p"] = floatComparison(0, diff["p"], 0.0001)

def test_predict(self):
levels = ["virginica", "setosa", "versicolor"]
explanatory = Q("petal_width") + C("species", levels = levels)
Expand Down