[1146] | 1 | // ****************************************************************
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| 2 | // This is free software licensed under the NUnit license. You
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| 3 | // may obtain a copy of the license as well as information regarding
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| 4 | // copyright ownership at http://nunit.org/?p=license&r=2.4.
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| 5 | // ****************************************************************
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| 6 |
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| 7 | namespace NUnit.Samples.Money
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| 8 | {
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| 9 |
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| 10 | using System;
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| 11 | using System.Text;
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| 12 |
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| 13 | /// <summary>A simple Money.</summary>
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| 14 | class Money: IMoney
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| 15 | {
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| 16 |
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| 17 | private int fAmount;
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| 18 | private String fCurrency;
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| 19 |
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| 20 | /// <summary>Constructs a money from the given amount and
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| 21 | /// currency.</summary>
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| 22 | public Money(int amount, String currency)
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| 23 | {
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| 24 | fAmount= amount;
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| 25 | fCurrency= currency;
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| 26 | }
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| 27 |
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| 28 | /// <summary>Adds a money to this money. Forwards the request to
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| 29 | /// the AddMoney helper.</summary>
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| 30 | public IMoney Add(IMoney m)
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| 31 | {
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| 32 | return m.AddMoney(this);
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| 33 | }
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| 34 |
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| 35 | public IMoney AddMoney(Money m)
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| 36 | {
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| 37 | if (m.Currency.Equals(Currency) )
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| 38 | return new Money(Amount+m.Amount, Currency);
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| 39 | return new MoneyBag(this, m);
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| 40 | }
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| 41 |
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| 42 | public IMoney AddMoneyBag(MoneyBag s)
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| 43 | {
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| 44 | return s.AddMoney(this);
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| 45 | }
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| 46 |
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| 47 | public int Amount
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| 48 | {
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| 49 | get { return fAmount; }
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| 50 | }
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| 51 |
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| 52 | public String Currency
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| 53 | {
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| 54 | get { return fCurrency; }
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| 55 | }
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| 56 |
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| 57 | public override bool Equals(Object anObject)
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| 58 | {
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| 59 | if (IsZero)
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| 60 | if (anObject is IMoney)
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| 61 | return ((IMoney)anObject).IsZero;
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| 62 | if (anObject is Money)
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| 63 | {
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| 64 | Money aMoney= (Money)anObject;
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| 65 | return aMoney.Currency.Equals(Currency)
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| 66 | && Amount == aMoney.Amount;
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| 67 | }
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| 68 | return false;
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| 69 | }
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| 70 |
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| 71 | public override int GetHashCode()
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| 72 | {
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| 73 | return fCurrency.GetHashCode()+fAmount;
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| 74 | }
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| 75 |
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| 76 | public bool IsZero
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| 77 | {
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| 78 | get { return Amount == 0; }
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| 79 | }
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| 80 |
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| 81 | public IMoney Multiply(int factor)
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| 82 | {
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| 83 | return new Money(Amount*factor, Currency);
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| 84 | }
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| 85 |
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| 86 | public IMoney Negate()
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| 87 | {
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| 88 | return new Money(-Amount, Currency);
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| 89 | }
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| 90 |
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| 91 | public IMoney Subtract(IMoney m)
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| 92 | {
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| 93 | return Add(m.Negate());
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| 94 | }
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| 95 |
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| 96 | public override String ToString()
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| 97 | {
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| 98 | StringBuilder buffer = new StringBuilder();
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| 99 | buffer.Append("["+Amount+" "+Currency+"]");
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| 100 | return buffer.ToString();
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| 101 | }
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| 102 | }
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| 103 | }
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