Add unit test for drop candy logic

game/gamemap/dropcandy_test.go

@@ -0,0 +1,49 @@
+package gamemap
+
+import (
+	"testing"
+
+	"candy/game/square"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestDropCandyChecker_CanDropCandy(t *testing.T) {
+	testCases := []struct {
+		name                 string
+		gameMap              *Map
+		playerX              int
+		playerY              int
+		expectedCanDropCandy bool
+	}{
+		{
+			name: "map empty",
+			gameMap: &Map{
+				batch:  nil,
+				maxRow: 4,
+				maxCol: 4,
+				grid: &[][]square.Square{
+					{nil, nil, nil, nil},
+					{nil, nil, nil, nil},
+					{nil, nil, nil, nil},
+					{nil, nil, nil, nil},
+				},
+			},
+			playerX:              1,
+			playerY:              2,
+			expectedCanDropCandy: true,
+		},
+	}
+
+	for _, testCase := range testCases {
+		t.Run(testCase.name, func(t *testing.T) {
+			dropCandyChecker := NewDropCandyChecker(testCase.gameMap)
+			gotCanDropCandyCheck := dropCandyChecker.CanDropCandy(
+				testCase.playerX,
+				testCase.playerY,
+				1,
+				1)
+			assert.Equal(t, testCase.expectedCanDropCandy, gotCanDropCandyCheck)
+		})
+	}
+}