71 lines
1.4 KiB
Go
71 lines
1.4 KiB
Go
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package part1
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import (
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"testing"
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"reflect"
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)
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func TestNextConst(t *testing.T) {
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next, err := Next([]int{1, 1, 1})
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equal(t, err, nil)
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equal(t, next, 1)
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next, err = Next([]int{2, 2, 2})
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equal(t, err, nil)
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equal(t, next, 2)
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}
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func TestNextLinear(t *testing.T) {
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next, err := Next([]int{0, 1, 2, 3})
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equal(t, err, nil)
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equal(t, next, 4)
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}
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func TestNextQuad(t *testing.T) {
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next, err := Next([]int{0, 1, 4, 9, 16})
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equal(t, err, nil)
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equal(t, next, 25)
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}
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func TestNextBadList(t *testing.T) {
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v, err := Next([]int{0, 5, 2})
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if err == nil {
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t.Errorf("expected error, got %v", v)
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}
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}
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func TestDerivConst(t *testing.T) {
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equal(t, Deriv([]int{1,1,1}), []int{0,0})
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equal(t, Deriv([]int{2,2,2}), []int{0,0})
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}
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func TestDerivLinear(t *testing.T) {
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equal(t, Deriv([]int{0,1,2}), []int{1,1})
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equal(t, Deriv([]int{0,2,4}), []int{2,2})
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}
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func TestDerivQuad(t *testing.T) {
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equal(t, Deriv([]int{0,1,4,9,16}), []int{1,3,5,7})
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}
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func TestIsZero(t *testing.T) {
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equal(t, IsZero([]int{0}), true)
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equal(t, IsZero([]int{0, 0}), true)
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equal(t, IsZero([]int{1}), false)
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equal(t, IsZero([]int{1, 1}), false)
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equal(t, IsZero([]int{1, 0}), false)
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}
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func TestLineConv(t *testing.T) {
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r, err := LineConv("0 1 2 3")
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equal(t, err, nil)
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equal(t, r, []int{0, 1, 2, 3})
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}
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func equal(t *testing.T, actual any, target any) {
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if !reflect.DeepEqual(actual, target) {
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t.Errorf("expected %v, got %v", target, actual)
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}
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}
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