82 lines
1.4 KiB
Go
82 lines
1.4 KiB
Go
package render_test
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import (
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"strconv"
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"testing"
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"git.kirsle.net/go/render"
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)
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func TestIntersection(t *testing.T) {
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newRect := func(x, y, w, h int) render.Rect {
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return render.Rect{
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X: x,
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Y: y,
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W: w,
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H: h,
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}
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}
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type TestCase struct {
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A render.Rect
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B render.Rect
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Expect bool
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}
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var tests = []TestCase{
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{
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A: newRect(0, 0, 1000, 1000),
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B: newRect(200, 200, 100, 100),
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Expect: true,
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},
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{
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A: newRect(200, 200, 100, 100),
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B: newRect(0, 0, 1000, 1000),
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Expect: true,
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},
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{
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A: newRect(0, 0, 100, 100),
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B: newRect(100, 0, 100, 100),
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Expect: true,
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},
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{
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A: newRect(0, 0, 99, 99),
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B: newRect(100, 0, 99, 99),
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Expect: false,
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},
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{
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// Real coords of a test doodad!
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A: newRect(183, 256, 283, 356),
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B: newRect(0, -232, 874, 490),
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Expect: true,
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},
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{
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A: newRect(183, 256, 283, 356),
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B: newRect(0, -240, 874, 490),
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Expect: false, // XXX: must be true
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},
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{
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A: newRect(0, 30, 9, 62),
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B: newRect(16, 0, 32, 64),
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Expect: false,
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},
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{
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A: newRect(0, 30, 11, 62),
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B: newRect(7, 4, 17, 28),
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Expect: true,
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},
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}
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for _, test := range tests {
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actual := test.A.Intersects(test.B)
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if actual != test.Expect {
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t.Errorf(
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"%s collision with %s: expected %s, got %s",
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test.A,
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test.B,
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strconv.FormatBool(test.Expect),
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strconv.FormatBool(actual),
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)
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}
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}
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}
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