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53 lines
1 KiB
Go
53 lines
1 KiB
Go
package fixedn
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import (
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"math/big"
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"testing"
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"github.com/stretchr/testify/require"
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)
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func TestDecimalFromStringGood(t *testing.T) {
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var testCases = []struct {
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bi *big.Int
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prec int
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s string
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}{
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{big.NewInt(123), 2, "1.23"},
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{big.NewInt(12300), 2, "123"},
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{big.NewInt(1234500000), 8, "12.345"},
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{big.NewInt(-12345), 3, "-12.345"},
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{big.NewInt(35), 8, "0.00000035"},
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{big.NewInt(1230), 5, "0.0123"},
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{big.NewInt(123456789), 20, "0.00000000000123456789"},
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}
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for _, tc := range testCases {
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t.Run(tc.s, func(t *testing.T) {
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s := ToString(tc.bi, tc.prec)
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require.Equal(t, tc.s, s)
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bi, err := FromString(s, tc.prec)
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require.NoError(t, err)
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require.Equal(t, tc.bi, bi)
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})
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}
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}
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func TestDecimalFromStringBad(t *testing.T) {
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var errCases = []struct {
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s string
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prec int
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}{
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{"", 0},
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{"", 1},
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{"12A", 1},
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{"12.345", 2},
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{"12.3A", 2},
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}
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for _, tc := range errCases {
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t.Run(tc.s, func(t *testing.T) {
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_, err := FromString(tc.s, tc.prec)
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require.Error(t, err)
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})
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}
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}
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