initial approximation

pkg/server/game_test.go

@@ -0,0 +1,105 @@
+package server_test
+
+import (
+	"testing"
+
+	"github.com/iliadenisov/galaxy/pkg/server"
+)
+
+func Test_ShipType(t *testing.T) {
+	Gunship := server.ShipType{
+		Drive:    4,
+		Armament: 2,
+		Weapons:  2,
+		Shields:  4,
+		Cargo:    0,
+	}
+
+	if Gunship.EmptyMass() != 11. {
+		t.Errorf("Cruiser mass expected %.3f but %.3f given", 11., Gunship.EmptyMass())
+	}
+
+	Cruiser := server.ShipType{
+		Drive:    15,
+		Armament: 1,
+		Weapons:  15,
+		Shields:  15,
+		Cargo:    0,
+	}
+
+	if Cruiser.EmptyMass() != 45. {
+		t.Errorf("Cruiser mass expected %.3f but %.3f given", 45., Cruiser.EmptyMass())
+	}
+
+	sg := server.ShipGroup{
+		Type:    Cruiser,
+		Number:  1,
+		State:   "In_Orbit",
+		Drive:   1.0,
+		Weapons: 1.0,
+		Shields: 1.0,
+		Cargo:   1.0,
+	}
+
+	upgradeCost := sg.UpgradeDriveCost(2.0) +
+		sg.UpgradeWeaponsCost(2.0) +
+		sg.UpgradeShieldsCost(2.0) +
+		sg.UpgradeCargoCost(2.0)
+
+	if upgradeCost != 225. {
+		t.Errorf("Cruiser upgrade cost expected %.3f but %.3f given", 225., upgradeCost)
+	}
+}
+
+func Test_CargoCapacity(t *testing.T) {
+	test := func(cargoSize float64, expectCapacity float64) {
+		ship := server.ShipType{
+			Drive:    1,
+			Armament: 1,
+			Weapons:  1,
+			Shields:  1,
+			Cargo:    cargoSize,
+		}
+		sg := server.ShipGroup{
+			Type:    ship,
+			Number:  1,
+			State:   "In_Orbit",
+			Drive:   1.0,
+			Weapons: 1.0,
+			Shields: 1.0,
+			Cargo:   1.0,
+		}
+		if sg.CargoCapacity() != expectCapacity {
+			t.Errorf("expected CargoCapacity=%.3f but %.3f given", expectCapacity, sg.CargoCapacity())
+		}
+	}
+	test(1, 1.05)
+	test(5, 6.25)
+	test(10, 15)
+	test(50, 175)
+	test(100, 600)
+}
+
+func Test_BombingPower(t *testing.T) {
+	Gunship := server.ShipType{
+		Drive:    60.0,
+		Armament: 3,
+		Weapons:  30.0,
+		Shields:  100.0,
+		Cargo:    0.0,
+	}
+	sg := server.ShipGroup{
+		Type:    Gunship,
+		Number:  1,
+		State:   "In_Orbit",
+		Drive:   1.0,
+		Weapons: 1.0,
+		Shields: 1.0,
+		Cargo:   1.0,
+	}
+	expectedBombingPower := 139.295
+	result := sg.BombingPower()
+	if result != expectedBombingPower {
+		t.Errorf("expected BombingPower=%.3f but %.3f given", expectedBombingPower, result)
+	}
+}