Assertions: Difference between revisions
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→{{header|Perl}}: rearrangements |
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MODULE Assertions; |
MODULE Assertions; |
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VAR |
VAR |
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x: INTEGER; |
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PROCEDURE DoIt*; |
PROCEDURE DoIt*; |
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BEGIN |
BEGIN |
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x := 41; |
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ASSERT(x = 42); |
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END DoIt; |
END DoIt; |
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END Assertions. |
END Assertions. |
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Assertions.DoIt [0000001DH] |
Assertions.DoIt [0000001DH] |
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Kernel.Call [00001A7CH] |
Kernel.Call [00001A7CH] |
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.adr INTEGER 1685454913 |
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.kind INTEGER 0 |
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.n INTEGER 0 |
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.p INTEGER 0 |
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.par ARRAY 256 OF INTEGER elements |
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.r REAL 8.70603013185328E+175 |
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.sig POINTER [64760018H] |
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.size INTEGER 2287288 |
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.sp INTEGER 256 |
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.typ POINTER NIL |
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Meta.Item.ParamCallVal [00002B5EH] |
Meta.Item.ParamCallVal [00002B5EH] |
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.adr INTEGER 1685454913 |
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.data ARRAY 256 OF INTEGER elements |
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</pre> |
</pre> |
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=={{header|D}}== |
=={{header|D}}== |
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before 'Hello Universe'... |
before 'Hello Universe'... |
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java.lang.AssertionError: This: Hello Universe is not the answer!. Expression: (it == 42). Values: it = Hello Universe |
java.lang.AssertionError: This: Hello Universe is not the answer!. Expression: (it == 42). Values: it = Hello Universe |
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at ConsoleScript80$_run_closure1.doCall(ConsoleScript80:2) |
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at ConsoleScript80.run(ConsoleScript80:8)</pre> |
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=={{header|Haskell}}== |
=={{header|Haskell}}== |
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julia> x::String |
julia> x::String |
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ERROR: type: typeassert: expected String, got Int32</lang> |
ERROR: type: typeassert: expected String, got Int32</lang> |
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=={{header|Lasso}}== |
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<lang lasso>local(a) = 8 |
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fail_if( |
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#a != 42, |
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error_code_runtimeAssertion, |
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error_msg_runtimeAssertion + ": #a is not 42" |
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)</lang> |
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{{out}} |
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<pre>-9945 Runtime assertion: #a is not 42</pre> |
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=={{header|Lisaac}}== |
=={{header|Lisaac}}== |
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<lang Lisaac>? { n = 42 };</lang> |
<lang Lisaac>? { n = 42 };</lang> |
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class SampleClass |
class SampleClass |
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{ |
{ |
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public SomeMethod (input : list[int]) : int |
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requires input.Length > 0 // requires keyword indicates precondition, |
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// there can be more than one condition per method |
// there can be more than one condition per method |
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{ ... } |
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public AnotherMethod (input : string) : list[char] |
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ensures value.Length > 0 // ensures keyword indicates postcondition |
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{ ... } // value is a special symbol that indicates the method's return value |
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}</lang> |
}</lang> |
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The design by contract macros throw <tt>Nemerle.AssertionException</tt>'s unless another Exception is specified using the <tt>otherwise</tt> keyword after the <tt>requires/ensures</tt> statement. |
The design by contract macros throw <tt>Nemerle.AssertionException</tt>'s unless another Exception is specified using the <tt>otherwise</tt> keyword after the <tt>requires/ensures</tt> statement. |
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MODULE Assertions; |
MODULE Assertions; |
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VAR |
VAR |
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a: INTEGER; |
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BEGIN |
BEGIN |
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a := 40; |
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ASSERT(a = 42); |
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END Assertions. |
END Assertions. |
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</lang> |
</lang> |
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====Definition==== |
====Definition==== |
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<lang vb>sub Assert( boolExpr, strOnFail ) |
<lang vb>sub Assert( boolExpr, strOnFail ) |
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if not boolExpr then |
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Err.Raise vbObjectError + 99999, , strOnFail |
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end if |
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end sub |
end sub |
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</lang> |
</lang> |
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