hit coverage min, but not quite done yet.

bar_chart_test.go

@@ -8,6 +8,32 @@ import (
 	assert "github.com/blendlabs/go-assert"
 )
 
+func TestBarChartRender(t *testing.T) {
+	assert := assert.New(t)
+
+	bc := BarChart{
+		Width:      1024,
+		Title:      "Test Title",
+		TitleStyle: StyleShow(),
+		XAxis:      StyleShow(),
+		YAxis: YAxis{
+			Style: StyleShow(),
+		},
+		Bars: []Value{
+			{Value: 1.0, Label: "One"},
+			{Value: 2.0, Label: "Two"},
+			{Value: 3.0, Label: "Three"},
+			{Value: 4.0, Label: "Four"},
+			{Value: 5.0, Label: "Five"},
+		},
+	}
+
+	buf := bytes.NewBuffer([]byte{})
+	err := bc.Render(PNG, buf)
+	assert.Nil(err)
+	assert.NotZero(buf.Len())
+}
+
 func TestBarChartProps(t *testing.T) {
 	assert := assert.New(t)
 
@@ -255,5 +281,18 @@ func TestBarChartCalculateEffectiveBarWidth(t *testing.T) {
 	assert.Equal(spacing, bs)
 	assert.Equal(barWidth, bw)
 	assert.Equal(cb.Width()+1, total)
+}
 
+func TestBarChatGetTitleFontSize(t *testing.T) {
+	assert := assert.New(t)
+	size := BarChart{Width: 2049, Height: 2049}.getTitleFontSize()
+	assert.Equal(48, size)
+	size = BarChart{Width: 1025, Height: 1025}.getTitleFontSize()
+	assert.Equal(24, size)
+	size = BarChart{Width: 513, Height: 513}.getTitleFontSize()
+	assert.Equal(18, size)
+	size = BarChart{Width: 257, Height: 257}.getTitleFontSize()
+	assert.Equal(12, size)
+	size = BarChart{Width: 128, Height: 128}.getTitleFontSize()
+	assert.Equal(10, size)
 }

chart_test.go

@@ -333,15 +333,20 @@ func TestChartSingleSeries(t *testing.T) {
 	assert := assert.New(t)
 	now := time.Now()
 	c := Chart{
-		Title:  "Hello!",
-		Width:  1024,
-		Height: 400,
+		Title:      "Hello!",
+		TitleStyle: StyleShow(),
+		Width:      1024,
+		Height:     400,
 		YAxis: YAxis{
+			Style: StyleShow(),
 			Range: &ContinuousRange{
 				Min: 0.0,
 				Max: 4.0,
 			},
 		},
+		XAxis: XAxis{
+			Style: StyleShow(),
+		},
 		Series: []Series{
 			TimeSeries{
 				Name:    "goog",

date_test.go

@@ -45,7 +45,6 @@ func TestDateOn(t *testing.T) {
 	assert.Equal(3, ts.Second())
 	assert.Equal(2, ts.Nanosecond())
 	assert.Equal(time.UTC, ts.Location())
-
 }
 
 func TestDateNoonOn(t *testing.T) {
@@ -222,3 +221,18 @@ func TestDateNextDayOfWeek(t *testing.T) {
 	assert.Equal(time.UTC, nextSunday.Location())
 	assert.Equal(time.UTC, nextMonday.Location())
 }
+
+func TestDateIsNYSEHoliday(t *testing.T) {
+	assert := assert.New(t)
+
+	cursor := time.Date(2013, 01, 01, 0, 0, 0, 0, time.UTC)
+	end := time.Date(2020, 1, 1, 0, 0, 0, 0, time.UTC)
+	var holidays int
+	for Date.Before(cursor, end) {
+		if Date.IsNYSEHoliday(cursor) {
+			holidays++
+		}
+		cursor = cursor.AddDate(0, 0, 1)
+	}
+	assert.Equal(holidays, 55)
+}

legend_test.go

@@ -0,0 +1,31 @@
+package chart
+
+import (
+	"bytes"
+	"testing"
+
+	"github.com/blendlabs/go-assert"
+)
+
+func TestLegend(t *testing.T) {
+	assert := assert.New(t)
+
+	graph := Chart{
+		Series: []Series{
+			ContinuousSeries{
+				Name:    "A test series",
+				XValues: []float64{1.0, 2.0, 3.0, 4.0, 5.0},
+				YValues: []float64{1.0, 2.0, 3.0, 4.0, 5.0},
+			},
+		},
+	}
+
+	//note we have to do this as a separate step because we need a reference to graph
+	graph.Elements = []Renderable{
+		Legend(&graph),
+	}
+	buf := bytes.NewBuffer([]byte{})
+	err := graph.Render(PNG, buf)
+	assert.Nil(err)
+	assert.NotZero(buf.Len())
+}