60 lines
1.3 KiB
Go
60 lines
1.3 KiB
Go
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package sqlite
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import (
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"math/big"
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"testing"
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)
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func strToPtr(s string) *string {
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res := new(string)
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*res = s
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return res
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}
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func TestBigIntToPadded128BitsStr(t *testing.T) {
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testCases := []struct {
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name string
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input *big.Int
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expected *string
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}{
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{
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name: "case small",
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input: big.NewInt(123456),
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expected: strToPtr("0000000000000000000000000001e240"),
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},
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{
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name: "case zero",
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input: big.NewInt(0),
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expected: strToPtr("00000000000000000000000000000000"),
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},
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{
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name: "case very large",
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input: new(big.Int).Exp(big.NewInt(10), big.NewInt(26), nil),
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expected: strToPtr("000000000052b7d2dcc80cd2e4000000"),
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},
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{
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name: "case max",
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input: new(big.Int).Sub(new(big.Int).Lsh(big.NewInt(1), 128), big.NewInt(1)),
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expected: strToPtr("ffffffffffffffffffffffffffffffff"),
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},
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{
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name: "case 3",
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input: nil,
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expected: nil,
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},
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}
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for _, tc := range testCases {
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t.Run(tc.name, func(t *testing.T) {
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result := BigIntToPadded128BitsStr(tc.input)
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if result != nil && tc.expected != nil {
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if *result != *tc.expected {
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t.Errorf("expected %s, got %s", *tc.expected, *result)
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}
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} else if result != nil || tc.expected != nil {
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t.Errorf("expected %v, got %v", tc.expected, result)
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}
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})
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}
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}
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