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Add the SQLITE_TESTCTRL_ASSERT and SQLITE_TESTCTRL_ALWAYS codes for the

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sqlite3_test_control() interface. (CVS 6623)

FossilOrigin-Name: 38df91c2edebee22d02b5f84260ee9e5e14db48e
This commit is contained in:
drh
2009-05-09 18:59:42 +00:00
parent 28414ee952
commit f3af63f941
4 changed files with 65 additions and 11 deletions
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56
src/main.c
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@@ -14,7 +14,7 @@
** other files are for internal use by SQLite and should not be
** accessed by users of the library.
**
** $Id: main.c,v 1.549 2009/05/07 13:43:49 drh Exp $
** $Id: main.c,v 1.550 2009/05/09 18:59:42 drh Exp $
*/
#include "sqliteInt.h"
@@ -2176,7 +2176,7 @@ int sqlite3_test_control(int op, ...){
}
/*
** sqlite3_test_control(PENDING_BYTE, unsigned int X)
** sqlite3_test_control(SQLITE_TESTCTRL_PENDING_BYTE, unsigned int X)
**
** Set the PENDING byte to the value in the argument, if X>0.
** Make no changes if X==0. Return the value of the pending byte
@@ -2193,6 +2193,58 @@ int sqlite3_test_control(int op, ...){
if( newVal ) sqlite3PendingByte = newVal;
break;
}
/*
** sqlite3_test_control(SQLITE_TESTCTRL_ASSERT, int X)
**
** This action provides a run-time test to see whether or not
** assert() was enabled at compile-time. If X is true and assert()
** is enabled, then the return value is true. If X is true and
** assert() is disabled, then the return value is zero. If X is
** false and assert() is enabled, then the assertion fires and the
** process aborts. If X is false and assert() is disabled, then the
** return value is zero.
*/
case SQLITE_TESTCTRL_ASSERT: {
volatile int x = 0;
assert( (x = va_arg(ap,int))!=0 );
rc = x;
break;
}
/*
** sqlite3_test_control(SQLITE_TESTCTRL_ALWAYS, int X)
**
** This action provides a run-time test to see how the ALWAYS and
** NEVER macros were defined at compile-time.
**
** The return value is ALWAYS(X).
**
** The recommended test is X==2. If the return value is 2, that means
** ALWAYS() and NEVER() are both no-op pass-through macros, which is the
** default setting. If the return value is 1, then ALWAYS() is either
** hard-coded to true or else it asserts if its argument is false.
** The first behavior (hard-coded to true) is the case if
** SQLITE_TESTCTRL_ASSERT shows that assert() is disabled and the second
** behavior (assert if the argument to ALWAYS() is false) is the case if
** SQLITE_TESTCTRL_ASSERT shows that assert() is enabled.
**
** The run-time test procedure might look something like this:
**
** if( sqlite3_test_control(SQLITE_TESTCTRL_ALWAYS, 2)==2 ){
** // ALWAYS() and NEVER() are no-op pass-through macros
** }else if( sqlite3_test_control(SQLITE_TESTCTRL_ASSERT, 1) ){
** // ALWAYS(x) asserts that x is true. NEVER(x) asserts x is false.
** }else{
** // ALWAYS(x) is a constant 1. NEVER(x) is a constant 0.
** }
*/
case SQLITE_TESTCTRL_ALWAYS: {
int x = va_arg(ap,int);
rc = ALWAYS(x);
break;
}
}
va_end(ap);
#endif /* SQLITE_OMIT_BUILTIN_TEST */