Comment changes in the ioerr tests. No changes to code. (CVS 3859)

FossilOrigin-Name: b7ed0e1e88a019c830f56abb14658104a30a1c43

manifest

@@ -1,5 +1,5 @@
-C Fix\sa\sbug\swhereby\ssqlite3_prepare_v2()\scould\sreturn\sboth\san\sout-of-memory\serror\sand\sa\svalid\sstatement\shandle.\s(CVS\s3858)
-D 2007-04-19T11:09:01
+C Comment\schanges\sin\sthe\sioerr\stests.\s\sNo\schanges\sto\scode.\s(CVS\s3859)
+D 2007-04-19T12:30:54
 F Makefile.in 8cab54f7c9f5af8f22fd97ddf1ecfd1e1860de62
 F Makefile.linux-gcc 2d8574d1ba75f129aba2019f0b959db380a90935
 F README 9c4e2d6706bdcc3efdd773ce752a8cdab4f90028
@@ -324,7 +324,7 @@ F test/table.test feea6a3eb08cf166f570255eea5447e42ef82498
 F test/tableapi.test 036575a98dcce7c92e9f39056839bbad8a715412
 F test/tclsqlite.test 51334389283c74bcbe28645a73159b17e239e9f3
 F test/temptable.test c36f3e5a94507abb64f7ba23deeb4e1a8a8c3821
-F test/tester.tcl 0fb5d0b93b05c41a1efcd3010fc6cf66f620a42e
+F test/tester.tcl effe3dae968afd8bb27c8792883788eeba821942
 F test/thread1.test 776c9e459b75ba905193b351926ac4019b049f35
 F test/thread2.test 6d7b30102d600f51b4055ee3a5a19228799049fb
 F test/threadtest1.c 6029d9c5567db28e6dc908a0c63099c3ba6c383b
@@ -459,7 +459,7 @@ F www/tclsqlite.tcl bb0d1357328a42b1993d78573e587c6dcbc964b9
 F www/vdbe.tcl 87a31ace769f20d3627a64fa1fade7fed47b90d0
 F www/version3.tcl 890248cf7b70e60c383b0e84d77d5132b3ead42b
 F www/whentouse.tcl fc46eae081251c3c181bd79c5faef8195d7991a5
-P b623538c559498b858fd9088faf0f3457b024968
-R 34a9c9622b6327def09bfe5f09cfc0a2
-U danielk1977
-Z bae87dbb6b82dc5bb5cdcc29876b1ea7
+P 8795d11c3c5bb39d34bc5194621ce97097a320e7
+R 881cddcd5870bcd2cccfc66d1e72ef6f
+U drh
+Z 698c62f2beadbeaf34d69daba13ce366

manifest.uuid

@@ -1 +1 @@
-8795d11c3c5bb39d34bc5194621ce97097a320e7
+b7ed0e1e88a019c830f56abb14658104a30a1c43

test/tester.tcl

@@ -11,7 +11,7 @@
 # This file implements some common TCL routines used for regression
 # testing the SQLite library
 #
-# $Id: tester.tcl,v 1.78 2007/04/13 03:23:21 drh Exp $
+# $Id: tester.tcl,v 1.79 2007/04/19 12:30:54 drh Exp $
 
 # Make sure tclsqlite3 was compiled correctly.  Abort now with an
 # error message if not.
@@ -453,26 +453,33 @@ proc do_ioerr_test {testname args} {
     # a result of the script, the Nth will fail.
     do_test $testname.$n.3 {
       set r [catch $::ioerrorbody msg]
-      # puts rc=[sqlite3_errcode $::DB]
       set rc [sqlite3_errcode $::DB]
       if {$::ioerropts(-erc)} {
-        # In extended result mode, all IOERRs are qualified 
+        # If we are in extended result code mode, make sure all of the
+        # IOERRs we get back really do have their extended code values.
+        # If an extended result code is returned, the sqlite3_errcode
+        # TCLcommand will return a string of the form:  SQLITE_IOERR+nnnn
+        # where nnnn is a number
         if {[regexp {^SQLITE_IOERR} $rc] && ![regexp {IOERR\+\d} $rc]} {
           return $rc
         }
       } else {
-        # Not in extended result mode, no errors are qualified
+        # If we are not in extended result code mode, make sure no
+        # extended error codes are returned.
         if {[regexp {\+\d} $rc]} {
           return $rc
         }
       }
+      # The test repeats as long as $::go is true.  
       set ::go [expr {$::sqlite_io_error_pending<=0}]
       set s [expr $::sqlite_io_error_hit==0]
       set ::sqlite_io_error_hit 0
-      # puts "$::sqlite_io_error_pending $r $msg"
-      # puts "r=$r s=$s go=$::go msg=\"$msg\""
+
+      # One of two things must have happened. either
+      #   1.  We never hit the IO error and the SQL returned OK
+      #   2.  An IO error was hit and the SQL failed
+      #
       expr { ($s && !$r && !$::go) || (!$s && $r && $::go) }
-      # expr {$::sqlite_io_error_pending>0 || $r!=0}
     } {1}
 
     # If an IO error occured, then the checksum of the database should