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| 5 | <title>NUnit - EqualityAsserts</title>
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| 16 | <div id="header">
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| 17 | <a id="logo" href="http://www.nunit.org"><img src="img/logo.gif" alt="NUnit.org" title="NUnit.org"></a>
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| 18 | <div id="nav">
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| 19 | <a href="http://www.nunit.org">NUnit</a>
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| 20 | <a class="active" href="index.html">Documentation</a>
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| 24 |
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| 25 | <div id="content">
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| 26 |
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| 27 | <h2>Equality Asserts</h2>
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| 28 |
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| 29 | <p>These methods test whether the two arguments are equal. Overloaded
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| 30 | methods are provided for common value types so that languages that don't
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| 31 | automatically box values can use them directly.</p>
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| 32 |
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| 33 | <div class="code" style="width: 36em" >
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| 34 | <pre>Assert.AreEqual( int expected, int actual );
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| 35 | Assert.AreEqual( int expected, int actual, string message );
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| 36 | Assert.AreEqual( int expected, int actual, string message,
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| 37 | params object[] parms );
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| 38 |
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| 39 | Assert.AreEqual( uint expected, uint actual );
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| 40 | Assert.AreEqual( uint expected, uint actual, string message );
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| 41 | Assert.AreEqual( uint expected, uint actual, string message,
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| 42 | params object[] parms );
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| 43 |
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| 44 | Assert.AreEqual( decimal expected, decimal actual );
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| 45 | Assert.AreEqual( decimal expected, decimal actual, string message );
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| 46 | Assert.AreEqual( decimal expected, decimal actual, string message,
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| 47 | params object[] parms );
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| 48 |
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| 49 | Assert.AreEqual( float expected, float actual, float tolerance );
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| 50 | Assert.AreEqual( float expected, float actual, float tolerance,
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| 51 | string message );
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| 52 | Assert.AreEqual( float expected, float actual, float tolerance,
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| 53 | string message, params object[] parms );
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| 54 |
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| 55 | Assert.AreEqual( double expected, double actual, double tolerance );
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| 56 | Assert.AreEqual( double expected, double actual, double tolerance,
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| 57 | string message );
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| 58 | Assert.AreEqual( double expected, double actual, double tolerance,
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| 59 | string message, params object[] parms );
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| 60 |
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| 61 | Assert.AreEqual( object expected, object actual );
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| 62 | Assert.AreEqual( object expected, object actual, string message );
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| 63 | Assert.AreEqual( object expected, object actual, string message,
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| 64 | params object[] parms );
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| 65 |
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| 66 | Assert.AreNotEqual( int expected, int actual );
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| 67 | Assert.AreNotEqual( int expected, int actual, string message );
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| 68 | Assert.AreNotEqual( int expected, int actual, string message,
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| 69 | params object[] parms );
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| 70 |
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| 71 | Assert.AreNotEqual( long expected, long actual );
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| 72 | Assert.AreNotEqual( long expected, long actual, string message );
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| 73 | Assert.AreNotEqual( long expected, long actual, string message,
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| 74 | params object[] parms );
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| 75 |
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| 76 | Assert.AreNotEqual( uint expected, uint actual );
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| 77 | Assert.AreNotEqual( uint expected, uint actual, string message );
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| 78 | Assert.AreNotEqual( uint expected, uint actual, string message,
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| 79 | params object[] parms );
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| 80 |
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| 81 | Assert.AreNotEqual( ulong expected, ulong actual );
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| 82 | Assert.AreNotEqual( ulong expected, ulong actual, string message );
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| 83 | Assert.AreNotEqual( ulong expected, ulong actual, string message,
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| 84 | params object[] parms );
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| 85 |
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| 86 | Assert.AreNotEqual( decimal expected, decimal actual );
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| 87 | Assert.AreNotEqual( decimal expected, decimal actual, string message );
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| 88 | Assert.AreNotEqual( decimal expected, decimal actual, string message,
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| 89 | params object[] parms );
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| 90 |
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| 91 | Assert.AreNotEqual( float expected, float actual );
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| 92 | Assert.AreNotEqual( float expected, float actual, string message );
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| 93 | Assert.AreNotEqual( float expected, float actual, string message,
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| 94 | params object[] parms );
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| 95 |
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| 96 | Assert.AreNotEqual( double expected, double actual );
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| 97 | Assert.AreNotEqual( double expected, double actual, string message );
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| 98 | Assert.AreNotEqual( double expected, double actual, string message,
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| 99 | params object[] parms );
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| 100 |
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| 101 | Assert.AreNotEqual( object expected, object actual );
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| 102 | Assert.AreNotEqual( object expected, object actual, string message );
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| 103 | Assert.AreNotEqual( object expected, object actual, string message,
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| 104 | params object[] parms );</pre>
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| 105 | </div>
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| 106 |
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| 107 | <h4>Comparing Numerics of Different Types</h4>
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| 108 |
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| 109 | <p>The method overloads that compare two objects make special provision so that numeric
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| 110 | values of different types compare as expected. This assert succeeds:
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| 111 | <pre> Assert.AreEqual( 5, 5.0 );</pre>
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| 112 | </p>
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| 113 |
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| 114 | <h4>Comparing Floating Point Values</h4>
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| 115 |
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| 116 | <p>Values of type float and double are normally compared using an additional
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| 117 | argument that indicates a tolerance within which they will be considered
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| 118 | as equal. Beginning with NUnit 2.4.4, the value of
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| 119 | <b>GlobalSettings.DefaultFloatingPointTolerance</b> is used if a third argument
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| 120 | is not provided. In earlier versions, or if the default has not been set,
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| 121 | values are tested for exact equality.
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| 122 |
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| 123 | <p>Special values are handled so that the following Asserts succeed:</p>
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| 124 |
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| 125 | <pre> Assert.AreEqual( double.PositiveInfinity, double.PositiveInfinity );
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| 126 | Assert.AreEqual( double.NegativeInfinity, double.NegativeInfinity );
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| 127 | Assert.AreEqual( double.NaN, double.NaN );</pre>
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| 128 |
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| 129 | <blockquote><i><b>Note:</b> The last example above represents a change with NUnit 2.2.3.
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| 130 | In earlier releases, the test would fail. We have made this change
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| 131 | because the new behavior seems to be more useful in tests. To avoid confusion,
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| 132 | we suggest using the new Assert.IsNaN method where appropriate.</i></blockquote>
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| 133 |
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| 134 | <h4>Comparing Arrays and Collections</h4>
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| 135 |
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| 136 | <p>Since version 2.2, NUnit has been able to compare two single-dimensioned arrays.
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| 137 | Beginning with version 2.4, multi-dimensioned arrays, nested arrays (arrays of arrays)
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| 138 | and collections may be compared. Two arrays or collections will be treated as equal
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| 139 | by Assert.AreEqual if they have the same dimensions and if each of the corresponding
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| 140 | elements is equal.</p>
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| 141 |
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| 153 | <li id="current"><a href="equalityAsserts.html">Equality Asserts</a></li>
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