inching up coverage.

value_formatter_test.go

@@ -0,0 +1,38 @@
+package chart
+
+import (
+	"testing"
+	"time"
+
+	"github.com/blendlabs/go-assert"
+)
+
+func TestTimeValueFormatterWithFormat(t *testing.T) {
+	assert := assert.New(t)
+
+	d := time.Now()
+	di := d.Unix()
+	df := float64(di)
+
+	s := TimeValueFormatterWithFormat(d, DefaultDateFormat)
+	si := TimeValueFormatterWithFormat(di, DefaultDateFormat)
+	sf := TimeValueFormatterWithFormat(df, DefaultDateFormat)
+	assert.Equal(s, si)
+	assert.Equal(s, sf)
+
+	sd := TimeValueFormatter(d)
+	sdi := TimeValueFormatter(di)
+	sdf := TimeValueFormatter(df)
+	assert.Equal(s, sd)
+	assert.Equal(s, sdi)
+	assert.Equal(s, sdf)
+}
+
+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"))
+}