50 lines
1.3 KiB
Go
50 lines
1.3 KiB
Go
package rect
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import "testing"
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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 onLine:\n\texpected: %t\n\t actual: %t",
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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 TestLineIntersection(t *testing.T) {
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var lineIntersectionTest = []struct {
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l []line
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expected Point
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}{
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{[]line{line{Point{0, 0}, Point{2, 2}}, line{Point{2, 0}, Point{0, 2}}}, Point{1, 1}},
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{[]line{line{Point{0, 0}, Point{-2, -2}}, line{Point{-2, 0}, Point{0, -2}}}, Point{-1, -1}},
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{[]line{line{Point{0, 0}, Point{-2, -2}}, line{Point{1, 0}, Point{1, -7}}}, Point{0, 0}},
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{[]line{line{Point{5, 8}, Point{8, 5}}, line{Point{3, 7}, Point{7, 3}}}, Point{0, 0}},
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}
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for _, rt := range lineIntersectionTest {
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actual, _ := lineIntersection(rt.l[0], rt.l[1])
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if actual != rt.expected {
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t.Errorf(
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"failed lineIntersection:\n\texpected: %v\n\t actual: %v",
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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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