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QB64-PE/internal/help/$ASSERTS.txt
SteveMcNeill 33adc04fc4 Add temp folder to repo. It's necessary as well!
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2022-04-28 13:39:56 -04:00

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The [[$ASSERTS]] metacommand enables debug tests with the [[_ASSERT]] macro.
{{PageSyntax}}
:[[$ASSERTS]]
:[[$ASSERTS]]:CONSOLE
{{PageDescription}}
* If an error message is passed to the [[_ASSERT]] statement, it is displayed in the console window if [[$ASSERTS|$ASSERTS:CONSOLE]] is used.
==Availability==
* '''Version 1.4 and up'''.
{{PageExamples}}
''Example:'' Adding test checks for parameter inputs in a function.
{{CodeStart}}
{{Cl|$ASSERTS}}:CONSOLE
{{Cl|DO}}
a = {{Cl|INT}}({{Cl|RND}} * 10)
b$ = myFunc$(a)
{{Cl|PRINT}} a, , b$
{{Cl|_LIMIT}} 3
{{Cl|LOOP}} {{Cl|UNTIL}} {{Cl|_KEYHIT}}
{{Cl|FUNCTION}} myFunc$ (value {{Cl|AS}} {{Cl|SINGLE}})
{{Cl|_ASSERT}} value > 0, "Value cannot be zero"
{{Cl|_ASSERT}} value <= 10, "Value cannot exceed 10"
{{Cl|IF}} value > 1 {{Cl|THEN}} plural$ = "s"
myFunc$ = {{Cl|STRING$}}(value, "*") + {{Cl|STR$}}(value) + " star" + plural$ + " :-)"
{{Cl|END}} {{Cl|FUNCTION}}
{{CodeEnd}}
{{PageSeeAlso}}
* [[_ASSERT]]
* [[$CHECKING]]
* [[Relational Operations]]
{{PageNavigation}}
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