ZacharyZhang-NY
596c62e026
Bars, lines, areas, pies, donuts, radar, histogram, scatter, bubbles, heatmaps, gauge, bullet, funnel, waterfall, treemap, candles, box plots, steps, rings, legend, axis, crosshair, polar area, pyramid, spectrum bars and win-loss strips, each drawn dot by dot. Ticks follow 1-2-5 steps and print as precisely as their step needs; a label row uses micro letters or the pixel font as a whole. Descriptions carry the data in numbers. Bad data panics.
62 lines
2.1 KiB
Go
62 lines
2.1 KiB
Go
package chart
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import (
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"math"
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"testing"
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)
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func TestNumbersStayExact(t *testing.T) {
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for v, want := range map[float64]string{
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0: "0", 12: "12", 3.5: "3.5", -0.5: "-0.5", 0.01: "0.01", 1e-7: "0.0000001", 2e-7: "0.0000002",
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1000001: "1000001", 12345: "12345", 0.1 + 0.2: "0.3",
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} {
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if got := num(v); got != want {
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t.Errorf("num(%v) = %q, want %q", v, got, want)
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}
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}
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}
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func TestTicksKeepTheirStep(t *testing.T) {
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for _, tc := range []struct {
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v, step float64
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want string
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}{
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{15000, 5000, "15K"}, {12300, 100, "12.3K"}, {1.5e6, 1e5, "1.5M"}, {1000000.2, 0.2, "1000000.2"},
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{0.6000000000000001, 0.2, "0.6"}, {2e-7, 1e-7, "0.0000002"}, {math.Copysign(0, -1), 1, "0"}, {40, 10, "40"},
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} {
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if got := tick(tc.v, tc.step); got != tc.want {
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t.Errorf("tick(%v, %v) = %q, want %q", tc.v, tc.step, got, tc.want)
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}
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}
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}
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func TestDescriptionsCarryTheData(t *testing.T) {
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for _, tc := range []struct{ got, want string }{
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{read([]string{"A", "B"}, []float64{0.01, 0.02}), "A 0.01, B 0.02"},
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{readSeries([]string{"X"}, []Series{{Name: "HP", Values: []float64{3}}, {Name: "MP", Values: []float64{1}}}), "HP: X 3; MP: X 1"},
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{readSlices([]Slice{{Name: "Gold", Value: 52}}), "Gold 52"},
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{where([]Point{{X: 1, Y: 3, Size: 9}}, true), "(1, 3) 9"},
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{record([]int{1, 1, -1, 0}), "2-1-1: 1, 1, -1, 0"},
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{ohlc([]Candle{{Label: "MON", Open: 10, High: 14, Low: 9, Close: 13}}), "MON 10, 14, 9, 13"},
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{fives([]string{"D6"}, [][]float64{{1, 2, 3, 4, 5}}), "D6 1, 2, 3, 4, 5"},
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} {
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if tc.got != tc.want {
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t.Errorf("got %q, want %q", tc.got, tc.want)
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}
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}
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}
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func TestFlatRangesGetDistinctTicks(t *testing.T) {
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for _, r := range [][2]float64{{1e6, 1e6}, {40, 40}, {1e-5, 1e-5}, {-3, -3}, {1e6, 1e6 + 1}} {
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from, step, n := ticks(r[0], r[1], 5)
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top := from + float64(n-1)*step
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if !(from < r[1] && r[0] < top) || tick(from, step) == tick(from+step, step) {
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t.Errorf("%v ticks %v to %v by %v", r, from, top, step)
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}
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}
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// All zeros keep zero as the floor, for bars.
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if from, _, _ := ticks(0, 0, 5); from != 0 {
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t.Errorf("flat zero ticks from %v", from)
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}
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}
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