Function TestIssue514

plot_test.go:81–131

(t *testing.T)

}

func TestIssue514(t *testing.T) {
	for _, ulp := range []int{
		0,
		+1, +2, +3, +4, +5, +6, +7, +8, +9, +10, +11, +12, +13, +14, +15, +16, +17, +18, +19, +20, +21, +22,
		-1, -2, -3, -4, -5, -6, -7, -8, -9, -10, -11, -12, -13, -14, -15, -16, -17, -18, -19, -20, -21, -22,
	} {
		t.Run(fmt.Sprintf("ulps%+02d", ulp), func(t *testing.T) {
			done := make(chan int)
			go func() {
				defer close(done)

				p := plot.New()

				var (
					y1 = 100.0
					y2 = y1
				)

				switch {
				case ulp < 0:
					y2 = math.Float64frombits(math.Float64bits(y1) - uint64(-ulp))
				case ulp > 0:
					y2 = math.Float64frombits(math.Float64bits(y1) + uint64(ulp))
				}

				pts, err := plotter.NewScatter(plotter.XYs{
					{X: 1, Y: y1},
					{X: 1, Y: y2},
				})
				if err != nil {
					t.Errorf("could not create scatter: %v", err)
					return
				}

				p.Add(pts)

				c := draw.NewCanvas(&recorder.Canvas{}, 100, 100)
				p.Draw(c)
			}()

			timeout := time.NewTimer(100 * time.Millisecond)
			defer timeout.Stop()

			select {
			case <-done:
			case <-timeout.C:
				t.Fatalf("could not create plot with small axis range within allotted time")
			}
		})
	}
}

func TestDrawGlyphBoxes(t *testing.T) {
	cmpimg.CheckPlot(func() {