add unit test

hamster_tycoon/hamster_test.go

@@ -0,0 +1,91 @@
+package hamster_tycoon
+
+import (
+	"errors"
+	"testing"
+)
+
+func TestDie(t *testing.T) {
+	testCases := []struct {
+		caseName string
+		hamster *Hamster
+		expectedAlive bool
+	}{
+		{
+			caseName: "Should die",
+			hamster: &Hamster{
+				Alive: true,
+			},
+			expectedAlive: false,
+		},
+		{
+			caseName: "Already die",
+			hamster: &Hamster{
+				Alive: false,
+			},
+			expectedAlive: false,
+		},
+	}
+
+	for _, tc := range testCases {
+		t.Run(tc.caseName, func(t *testing.T) {
+			tc.hamster.Die()
+			if tc.hamster.Alive != tc.expectedAlive {
+				t.Errorf("Die result does not match expectation. \n Got : %t \n Get : %t", tc.expectedAlive, tc.hamster.Alive)
+			}
+		})
+	}
+}
+
+func TestFuck(t *testing.T) {
+	testCases := []struct {
+		caseName string
+		hamster1 *Hamster
+		hamster2 *Hamster
+		expectedResult bool
+		expectedError error
+	}{
+		{
+			caseName: "Hamster 1 too young",
+			hamster1: &Hamster{
+				Alive: true,
+				Sexe: MALE,
+				Age: GestationMinAge - 1,
+			},
+			hamster2: &Hamster{
+				Alive: true,
+				Sexe: FEMALE,
+				Age: GestationMinAge + 1,
+			},
+			expectedResult: false,
+			expectedError: errors.New("one of the hamster is too young"),
+		},
+		{
+			caseName: "Hamster 2 too young",
+			hamster1: &Hamster{
+				Alive: false,
+				Sexe: MALE,
+				Age: GestationMinAge + 1,
+			},
+			hamster2: &Hamster{
+				Alive: true,
+				Sexe: FEMALE,
+				Age: GestationMinAge - 1,
+			},
+			expectedResult: false,
+			expectedError: errors.New("one of the hamster is too young"),
+		},
+	}
+
+	for _, tc := range testCases {
+		t.Run(tc.caseName, func(t *testing.T) {
+			bool, err := tc.hamster1.Fuck(tc.hamster2)
+			if tc.expectedResult != bool {
+				t.Errorf("Fuck result does not match expectation. \n Got : %t \n Get : %t", tc.expectedResult, bool)
+			}
+			if tc.expectedError.Error() != err.Error() {
+				t.Errorf("Fuck result does not match expectation. \n Got : %s \n Get : %s", tc.expectedError, err)
+			}
+		})
+	}
+}