53 lines
1.1 KiB
Go
53 lines
1.1 KiB
Go
package rect
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import (
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"math"
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"testing"
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)
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func TestDistance(t *testing.T) {
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var distanceTest = []struct {
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p []Point
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expected float64
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}{
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{[]Point{Point{1, 1}, Point{4, 5}}, 5},
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{[]Point{Point{-1, -1}, Point{2, 3}}, 5},
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{[]Point{Point{1, 1}, Point{2, 2}}, math.Sqrt(2)},
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{[]Point{Point{1, 1}, Point{40, 20}}, math.Sqrt(1882)},
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}
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for _, rt := range distanceTest {
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actual := distance(rt.p[0], rt.p[1])
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if actual != rt.expected {
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t.Errorf(
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"failed spiral:\n\texpected: %d\n\t actual: %d",
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rt.expected,
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actual,
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)
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}
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}
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}
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func TestOnLine(t *testing.T) {
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var onLineTest = []struct {
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p []Point
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expected bool
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}{
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{[]Point{Point{1, 1}, Point{3, 3}, Point{2, 2}}, true},
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{[]Point{Point{1, 1}, Point{3, 3}, Point{4, 4}}, false},
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{[]Point{Point{-1, -1}, Point{-3, -3}, Point{-4, -4}}, false},
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{[]Point{Point{-1, -1}, Point{-3, -3}, Point{-2, -2}}, true},
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}
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for _, rt := range onLineTest {
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actual := onLine(rt.p[0], rt.p[1], rt.p[2])
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if actual != rt.expected {
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t.Errorf(
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"failed spiral:\n\texpected: %d\n\t actual: %d",
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rt.expected,
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actual,
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)
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}
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}
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}
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