inching up coverage.

chart_test.go

@@ -8,6 +8,121 @@ import (
 	"github.com/blendlabs/go-assert"
 )
 
+func TestChartGetDPI(t *testing.T) {
+	assert := assert.New(t)
+
+	unset := Chart{}
+	assert.Equal(DefaultDPI, unset.GetDPI())
+	assert.Equal(192, unset.GetDPI(192))
+
+	set := Chart{DPI: 128}
+	assert.Equal(128, set.GetDPI())
+	assert.Equal(128, set.GetDPI(192))
+}
+
+func TestChartGetFont(t *testing.T) {
+	assert := assert.New(t)
+
+	f, err := GetDefaultFont()
+	assert.Nil(err)
+
+	unset := Chart{}
+	assert.Nil(unset.GetFont())
+
+	set := Chart{Font: f}
+	assert.NotNil(set.GetFont())
+}
+
+func TestChartGetWidth(t *testing.T) {
+	assert := assert.New(t)
+
+	unset := Chart{}
+	assert.Equal(DefaultChartWidth, unset.GetWidth())
+
+	set := Chart{Width: DefaultChartWidth + 10}
+	assert.Equal(DefaultChartWidth+10, set.GetWidth())
+}
+
+func TestChartGetHeight(t *testing.T) {
+	assert := assert.New(t)
+
+	unset := Chart{}
+	assert.Equal(DefaultChartHeight, unset.GetHeight())
+
+	set := Chart{Height: DefaultChartHeight + 10}
+	assert.Equal(DefaultChartHeight+10, set.GetHeight())
+}
+
+func TestChartGetRanges(t *testing.T) {
+	assert := assert.New(t)
+
+	c := Chart{
+		Series: []Series{
+			ContinuousSeries{
+				XValues: []float64{-2.0, -1.0, 0, 1.0, 2.0},
+				YValues: []float64{1.0, 2.0, 3.0, 4.0, 4.5},
+			},
+			ContinuousSeries{
+				XValues: []float64{1.0, 2.0, 3.0, 4.0, 5.0},
+				YValues: []float64{-2.1, -1.0, 0, 1.0, 2.0},
+			},
+			ContinuousSeries{
+				YAxis:   YAxisSecondary,
+				XValues: []float64{1.0, 2.0, 3.0, 4.0, 5.0},
+				YValues: []float64{10.0, 11.0, 12.0, 13.0, 14.0},
+			},
+		},
+	}
+
+	xrange, yrange, yrangeAlt := c.getRanges()
+	assert.Equal(-2.0, xrange.Min)
+	assert.Equal(5.0, xrange.Max)
+
+	assert.Equal(-2.1, yrange.Min)
+	assert.Equal(4.5, yrange.Max)
+
+	assert.Equal(10.0, yrangeAlt.Min)
+	assert.Equal(14.0, yrangeAlt.Max)
+
+	cSet := Chart{
+		XAxis: XAxis{
+			Range: Range{Min: 9.8, Max: 19.8},
+		},
+		YAxis: YAxis{
+			Range: Range{Min: 9.9, Max: 19.9},
+		},
+		YAxisSecondary: YAxis{
+			Range: Range{Min: 9.7, Max: 19.7},
+		},
+		Series: []Series{
+			ContinuousSeries{
+				XValues: []float64{-2.0, -1.0, 0, 1.0, 2.0},
+				YValues: []float64{1.0, 2.0, 3.0, 4.0, 4.5},
+			},
+			ContinuousSeries{
+				XValues: []float64{1.0, 2.0, 3.0, 4.0, 5.0},
+				YValues: []float64{-2.1, -1.0, 0, 1.0, 2.0},
+			},
+			ContinuousSeries{
+				YAxis:   YAxisSecondary,
+				XValues: []float64{1.0, 2.0, 3.0, 4.0, 5.0},
+				YValues: []float64{10.0, 11.0, 12.0, 13.0, 14.0},
+			},
+		},
+	}
+
+	xr2, yr2, yra2 := cSet.getRanges()
+	assert.Equal(9.8, xr2.Min)
+	assert.Equal(19.8, xr2.Max)
+
+	assert.Equal(9.9, yr2.Min)
+	assert.Equal(19.9, yr2.Max)
+
+	assert.Equal(9.7, yra2.Min)
+	assert.Equal(19.7, yra2.Max)
+}
+
+// TestChartSingleSeries is more of a sanity check than anything.
 func TestChartSingleSeries(t *testing.T) {
 	assert := assert.New(t)
 	now := time.Now()