diff --git a/bar_chart_test.go b/bar_chart_test.go
index 40e4c98..a2ae9c1 100644
--- a/bar_chart_test.go
+++ b/bar_chart_test.go
@@ -142,3 +142,33 @@ func TestBarChartHasAxes(t *testing.T) {
 
 	assert.True(bc.hasAxes())
 }
+
+func TestBarChartGetDefaultCanvasBox(t *testing.T) {
+	assert := assert.New(t)
+
+	bc := BarChart{}
+	b := bc.getDefaultCanvasBox()
+	assert.False(b.IsZero())
+}
+
+func TestBarChartSetRangeDomains(t *testing.T) {
+	assert := assert.New(t)
+
+	bc := BarChart{}
+	cb := bc.box()
+	yr := bc.getRanges()
+	yr2 := bc.setRangeDomains(cb, yr)
+	assert.NotZero(yr2.GetDomain())
+}
+
+func TestBarChartGetValueFormatters(t *testing.T) {
+	assert := assert.New(t)
+
+	bc := BarChart{}
+	vf := bc.getValueFormatters()
+	assert.NotNil(vf)
+	assert.Equal("1234.00", vf(1234.0))
+
+	bc.YAxis.ValueFormatter = func(_ interface{}) string { return "test" }
+	assert.Equal("test", bc.getValueFormatters()(1234))
+}
diff --git a/box_test.go b/box_test.go
index fa95468..ba3b1ed 100644
--- a/box_test.go
+++ b/box_test.go
@@ -126,3 +126,20 @@ func TestBoxOuterConstrain(t *testing.T) {
 	assert.Equal(85, d.Right, d.String())
 	assert.Equal(95, d.Bottom, d.String())
 }
+
+func TestBoxShift(t *testing.T) {
+	assert := assert.New(t)
+
+	b := Box{
+		Top:    5,
+		Left:   5,
+		Right:  10,
+		Bottom: 10,
+	}
+
+	shifted := b.Shift(1, 2)
+	assert.Equal(7, shifted.Top)
+	assert.Equal(6, shifted.Left)
+	assert.Equal(11, shifted.Right)
+	assert.Equal(12, shifted.Bottom)
+}
diff --git a/value_formatter.go b/value_formatter.go
index 1a9afba..8789631 100644
--- a/value_formatter.go
+++ b/value_formatter.go
@@ -56,5 +56,14 @@ func FloatValueFormatterWithFormat(v interface{}, floatFormat string) string {
 	if typed, isTyped := v.(float64); isTyped {
 		return fmt.Sprintf(floatFormat, typed)
 	}
+	if typed, isTyped := v.(float32); isTyped {
+		return fmt.Sprintf(floatFormat, typed)
+	}
+	if typed, isTyped := v.(int); isTyped {
+		return fmt.Sprintf(floatFormat, float64(typed))
+	}
+	if typed, isTyped := v.(int64); isTyped {
+		return fmt.Sprintf(floatFormat, float64(typed))
+	}
 	return ""
 }
diff --git a/value_formatter_test.go b/value_formatter_test.go
index cc402b4..0675914 100644
--- a/value_formatter_test.go
+++ b/value_formatter_test.go
@@ -28,11 +28,31 @@ func TestTimeValueFormatterWithFormat(t *testing.T) {
 	assert.Equal(s, sdf)
 }
 
+func TestFloatValueFormatter(t *testing.T) {
+	assert := assert.New(t)
+	assert.Equal("1234.00", FloatValueFormatter(1234.00))
+}
+
+func TestFloatValueFormatterWithFloat32Input(t *testing.T) {
+	assert := assert.New(t)
+	assert.Equal("1234.00", FloatValueFormatter(float32(1234.00)))
+}
+
+func TestFloatValueFormatterWithIntegerInput(t *testing.T) {
+	assert := assert.New(t)
+	assert.Equal("1234.00", FloatValueFormatter(1234))
+}
+
+func TestFloatValueFormatterWithInt64Input(t *testing.T) {
+	assert := assert.New(t)
+	assert.Equal("1234.00", FloatValueFormatter(int64(1234)))
+}
+
 func TestFloatValueFormatterWithFormat(t *testing.T) {
 	assert := assert.New(t)
 
 	v := 123.456
 	sv := FloatValueFormatterWithFormat(v, "%.3f")
 	assert.Equal("123.456", sv)
-	assert.Equal("", FloatValueFormatterWithFormat(123, "%.3f"))
+	assert.Equal("123.000", FloatValueFormatterWithFormat(123, "%.3f"))
 }