Function TestExtendReuseSlice

tempodb/encoding/vparquet3/schema_test.go:478–513

(t *testing.T)

}

func TestExtendReuseSlice(t *testing.T) {
	tcs := []struct {
		sz       int
		in       []int
		expected []int
	}{
		{
			sz:       0,
			in:       []int{1, 2, 3},
			expected: []int{},
		},
		{
			sz:       2,
			in:       []int{1, 2, 3},
			expected: []int{1, 2},
		},
		{
			sz:       5,
			in:       []int{1, 2, 3},
			expected: []int{1, 2, 3, 0, 0},
		},
		{
			// len < cap < sz: slice was shrunk then grown past cap
			sz:       6,
			in:       append(make([]int, 0, 4), 1, 2),
			expected: []int{1, 2, 0, 0, 0, 0},
		},
	}

	for _, tc := range tcs {
		t.Run(fmt.Sprintf("%v", tc.sz), func(t *testing.T) {
			out := extendReuseSlice(tc.sz, tc.in)
			assert.Equal(t, tc.expected, out)
		})
	}
}

func BenchmarkExtendReuseSlice(b *testing.B) {
	in := []int{1, 2, 3}