testing histogram series.

xaxis_test.go

@@ -47,3 +47,21 @@ func TestXAxisGetTicksWithUserDefaults(t *testing.T) {
 	ticks := xa.GetTicks(r, xr, styleDefaults, vf)
 	assert.Len(ticks, 1)
 }
+
+func TestXAxisMeasure(t *testing.T) {
+	assert := assert.New(t)
+
+	f, err := GetDefaultFont()
+	assert.Nil(err)
+	style := Style{
+		Font:     f,
+		FontSize: 10.0,
+	}
+	r, err := PNG(100, 100)
+	assert.Nil(err)
+	ticks := []Tick{{Value: 1.0, Label: "1.0"}, {Value: 2.0, Label: "2.0"}, {Value: 3.0, Label: "3.0"}}
+	xa := XAxis{}
+	xab := xa.Measure(r, Box{0, 0, 100, 100}, &ContinuousRange{Min: 1.0, Max: 3.0, Domain: 100}, style, ticks)
+	assert.Equal(122, xab.Width())
+	assert.Equal(21, xab.Height())
+}