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Function TestNewFromBigRat

decimal_test.go:580–623  ·  view source on GitHub ↗
(t *testing.T)

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578}
579
580func TestNewFromBigRat(t *testing.T) {
581 mustParseRat := func(val string) *big.Rat {
582 num, _ := new(big.Rat).SetString(val)
583 return num
584 }
585
586 type Inp struct {
587 val *big.Rat
588 prec int32
589 }
590
591 tests := map[Inp]string{
592 Inp{big.NewRat(0, 1), 16}: "0",
593 Inp{big.NewRat(4, 5), 16}: "0.8",
594 Inp{big.NewRat(10, 2), 16}: "5",
595 Inp{big.NewRat(1023427554493, 43432632), 16}: "23563.5628642767953828", // rounded
596 Inp{big.NewRat(1, 434324545566634), 16}: "0.0000000000000023",
597 Inp{big.NewRat(1, 3), 16}: "0.3333333333333333",
598 Inp{big.NewRat(2, 3), 2}: "0.67", // rounded
599 Inp{big.NewRat(2, 3), 16}: "0.6666666666666667", // rounded
600 Inp{big.NewRat(10000, 3), 16}: "3333.3333333333333333",
601 Inp{mustParseRat("30702832066636633479"), 16}: "30702832066636633479",
602 Inp{mustParseRat("487028320159896636679.1827512895753"), 16}: "487028320159896636679.1827512895753",
603 Inp{mustParseRat("127028320612589896636633479.173582751289575278357832"), -2}: "127028320612589896636633500", // rounded
604 Inp{mustParseRat("127028320612589896636633479.173582751289575278357832"), 16}: "127028320612589896636633479.1735827512895753", // rounded
605 Inp{mustParseRat("127028320612589896636633479.173582751289575278357832"), 32}: "127028320612589896636633479.173582751289575278357832",
606 }
607
608 // add negatives
609 for p, s := range tests {
610 if p.val.Cmp(new(big.Rat)) > 0 {
611 tests[Inp{p.val.Neg(p.val), p.prec}] = "-" + s
612 }
613 }
614
615 for input, s := range tests {
616 d := NewFromBigRat(input.val, input.prec)
617 if d.String() != s {
618 t.Errorf("expected %s, got %s (%s, %d)",
619 s, d.String(),
620 d.value.String(), d.exp)
621 }
622 }
623}
624
625func TestCopy(t *testing.T) {
626 origin := New(1, 0)

Callers

nothing calls this directly

Calls 4

NewFromBigRatFunction · 0.85
CmpMethod · 0.80
NegMethod · 0.80
StringMethod · 0.45

Tested by

no test coverage detected

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