utils/sum_test.go at master · msumera/utils · GitHub

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package utils

import "testing"

func TestSumInt(t *testing.T) {
	type args[T Number] struct {
		list []T
	}
	type testCase[T Number] struct {
		name string
		args args[T]
		want T
	}
	tests := []testCase[int]{
		{
			name: "empty",
			args: struct {
				list []int
			}{list: make([]int, 0)},
			want: 0,
		},
		{
			name: "1",
			args: struct {
				list []int
			}{list: []int{1}},
			want: 1,
		},
		{
			name: "2",
			args: struct {
				list []int
			}{list: []int{1, 2}},
			want: 3,
		},
		{
			name: "3",
			args: struct {
				list []int
			}{list: []int{1, 2, 3}},
			want: 6,
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			if got := Sum(tt.args.list); got != tt.want {
				t.Errorf("Sum() = %v, want %v", got, tt.want)
			}
		})
	}
}

func TestSumFloat64(t *testing.T) {
	type args[T Number] struct {
		list []T
	}
	type testCase[T Number] struct {
		name string
		args args[T]
		want T
	}
	tests := []testCase[float64]{
		{
			name: "empty",
			args: struct {
				list []float64
			}{list: make([]float64, 0)},
			want: 0,
		},
		{
			name: "1",
			args: struct {
				list []float64
			}{list: []float64{1.0}},
			want: 1.0,
		},
		{
			name: "2",
			args: struct {
				list []float64
			}{list: []float64{1.0, 2.0}},
			want: 3.0,
		},
		{
			name: "3",
			args: struct {
				list []float64
			}{list: []float64{1.0, 2.0, 3.5}},
			want: 6.5,
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			if got := Sum(tt.args.list); got != tt.want {
				t.Errorf("Sum() = %v, want %v", got, tt.want)
			}
		})
	}
}