database/sqlite
1
0
Fork 0
mirror of https://github.com/sqlite/sqlite.git synced 2025-08-07 02:42:48 +03:00
Code Activity

Add the VdbeCoverageNeverTaken() macro, and comments that better describe how

Browse Source 
the VDBE branch coverage measurement works.  Add some tags to provide 100%
VDBE branch coverage.

FossilOrigin-Name: c1e94169dd8eb80b4d18c73be9f81585330d11ad
This commit is contained in:
drh
2014-02-19 19:14:34 +00:00
parent 3d77dee935
commit 5655c549aa
6 changed files with 60 additions and 19 deletions
Download Patch File Download Diff File Expand all files Collapse all files

27
src/vdbe.h
View File

@@ -241,14 +241,39 @@ void sqlite3VdbeLinkSubProgram(Vdbe *, SubProgram *);
# define VdbeModuleComment(X)
#endif
/* Set the Opcode.iSrcline field of the previous opcode */
/*
** The VdbeCoverage macros are used to set a coverage testing point
** for VDBE branch instructions. The coverage testing points are line
** numbers in the sqlite3.c source file. VDBE branch coverage testing
** only works with an amalagmation build. That's ok since a VDBE branch
** coverage build designed for testing the test suite only. No application
** should ever ship with VDBE branch coverage measuring turned on.
**
** VdbeCoverage(v) // Mark the previously coded instruction
** // as a branch
**
** VdbeCoverageIf(v, conditional) // Mark previous if conditional true
**
** VdbeCoverageAlwaysTaken(v) // Previous branch is always taken
**
** VdbeCoverageNeverTaken(v) // Previous branch is never taken
**
** Every VDBE branch operation must be tagged with one of the macros above.
** If not, then when "make test" is run with -DSQLITE_VDBE_COVERAGE and
** -DSQLITE_DEBUG then an ALWAYS() will fail in the vdbeTakeBranch()
** routine in vdbe.c, alerting the developer to the missed tag.
*/
#ifdef SQLITE_VDBE_COVERAGE
void sqlite3VdbeSetLineNumber(Vdbe*,int);
# define VdbeCoverage(v) sqlite3VdbeSetLineNumber(v,__LINE__)
# define VdbeCoverageIf(v,x) if(x)sqlite3VdbeSetLineNumber(v,__LINE__)
# define VdbeCoverageAlwaysTaken(v) sqlite3VdbeSetLineNumber(v,2);
# define VdbeCoverageNeverTaken(v) sqlite3VdbeSetLineNumber(v,1);
#else
# define VdbeCoverage(v)
# define VdbeCoverageIf(v,x)
# define VdbeCoverageAlwaysTaken(v)
# define VdbeCoverageNeverTaken(v)
#endif
#endif