Feature/cover unit test (#81)

mathUtil/rand_test.go

@@ -3,12 +3,26 @@ package mathUtil
 import "testing"
 
 func TestRand(t *testing.T) {
-	minNum := 1
-	maxNum := 100
-	for i := 0; i < 1000; i++ {
-		num := Rand(minNum, maxNum)
-		if num < minNum || num > maxNum {
-			t.Errorf("randRange() returned %d, which is outside the range of [%d, %d]", num, minNum, maxNum)
-		}
+	testCases := []struct {
+		name   string
+		minNum int
+		maxNum int
+	}{
+		{
+			name:   "测试随机数在范围内",
+			minNum: 1,
+			maxNum: 100,
+		},
+	}
+
+	for _, tc := range testCases {
+		t.Run(tc.name, func(t *testing.T) {
+			for i := 0; i < 1000; i++ {
+				num := Rand(tc.minNum, tc.maxNum)
+				if num < tc.minNum || num > tc.maxNum {
+					t.Errorf("Rand(%d, %d) returned %d, which is outside the range of [%d, %d]", tc.minNum, tc.maxNum, num, tc.minNum, tc.maxNum)
+				}
+			}
+		})
 	}
 }