package chart import ( "testing" "github.com/wcharczuk/go-chart/v2/testutil" ) func TestLogRangeTranslate(t *testing.T) { values := []float64{1, 10, 100, 1000, 10000, 100000, 1000000} r := LogarithmicRange{Domain: 1000} r.Min, r.Max = MinMax(values...) testutil.AssertEqual(t, 0, r.Translate(0)) // goes to bottom testutil.AssertEqual(t, 0, r.Translate(1)) // goes to bottom testutil.AssertEqual(t, 160, r.Translate(10)) // roughly 1/6th of max testutil.AssertEqual(t, 500, r.Translate(1000)) // roughly 1/2 of max (1.0e6 / 1.0e3) testutil.AssertEqual(t, 1000, r.Translate(1000000)) // max value } func TestGetTicks(t *testing.T) { values := []float64{35, 512, 1525122} r := LogarithmicRange{Domain: 1000} r.Min, r.Max = MinMax(values...) ticks := r.GetTicks(nil, Style{}, FloatValueFormatter) testutil.AssertEqual(t, 7, len(ticks)) testutil.AssertEqual(t, 10, ticks[0].Value) testutil.AssertEqual(t, 100, ticks[1].Value) testutil.AssertEqual(t, 10000000, ticks[6].Value) } func TestGetTicksFromHigh(t *testing.T) { values := []float64{1412, 352144, 1525122} // min tick should be 1000 r := LogarithmicRange{} r.Min, r.Max = MinMax(values...) ticks := r.GetTicks(nil, Style{}, FloatValueFormatter) testutil.AssertEqual(t, 5, len(ticks)) testutil.AssertEqual(t, float64(1000), ticks[0].Value) testutil.AssertEqual(t, float64(10000), ticks[1].Value) testutil.AssertEqual(t, float64(10000000), ticks[4].Value) }