neoneo-go/pkg/util/fixed8_test.go
Roman Khimov c67217159f fixed8: remove trailing zeroes from string representation
Add some testcases from `dev` branch (with less than zero case added) and
remove useless trailing zeroes from the resulting string.
2019-08-26 13:32:19 +03:00

64 lines
1.5 KiB
Go

package util
import (
"encoding/json"
"strconv"
"testing"
"github.com/stretchr/testify/assert"
)
func TestNewFixed8(t *testing.T) {
values := []int64{9000, 100000000, 5, 10945}
for _, val := range values {
assert.Equal(t, Fixed8(val*decimals), NewFixed8(val))
assert.Equal(t, val, NewFixed8(val).Value())
}
}
func TestFixed8DecodeString(t *testing.T) {
// Fixed8DecodeString works correctly with integers
ivalues := []string{"9000", "100000000", "5", "10945", "20.45", "0.00000001", "-42"}
for _, val := range ivalues {
n, err := Fixed8DecodeString(val)
assert.Nil(t, err)
assert.Equal(t, val, n.String())
}
// Fixed8DecodeString parses number with maximal precision
val := "123456789.12345678"
n, err := Fixed8DecodeString(val)
assert.Nil(t, err)
assert.Equal(t, Fixed8(12345678912345678), n)
// Fixed8DecodeString parses number with non-maximal precision
val = "901.2341"
n, err = Fixed8DecodeString(val)
assert.Nil(t, err)
assert.Equal(t, Fixed8(90123410000), n)
}
func TestFixed8UnmarshalJSON(t *testing.T) {
var testCases = []float64{
123.45,
-123.45,
}
for _, fl := range testCases {
str := strconv.FormatFloat(fl, 'g', -1, 64)
expected, _ := Fixed8DecodeString(str)
// UnmarshalJSON should decode floats
var u1 Fixed8
s, _ := json.Marshal(fl)
assert.Nil(t, json.Unmarshal(s, &u1))
assert.Equal(t, expected, u1)
// UnmarshalJSON should decode strings
var u2 Fixed8
s, _ = json.Marshal(str)
assert.Nil(t, json.Unmarshal(s, &u2))
assert.Equal(t, expected, u2)
}
}