Improve coverage of expr.c and btree.c slightly. (CVS 2992)

FossilOrigin-Name: cc2e8e87cfd474b4dc6833ee0c38e2cd2dd3a494

manifest

@@ -1,5 +1,5 @@
-C Remove\svestiges\sof\sthe\solder\sTSD\scode\sfor\shandling\sOOM\sexceptions.\nPrepare\sfor\sthe\srelease\sof\s3.3.2.\s(CVS\s2991)
-D 2006-01-23T00:04:54
+C Improve\scoverage\sof\sexpr.c\sand\sbtree.c\sslightly.\s(CVS\s2992)
+D 2006-01-23T05:50:58
 F Makefile.in ab3ffd8d469cef4477257169b82810030a6bb967
 F Makefile.linux-gcc aee18d8a05546dcf1888bd4547e442008a49a092
 F README 9c4e2d6706bdcc3efdd773ce752a8cdab4f90028
@@ -42,7 +42,7 @@ F src/complete.c 7d1a44be8f37de125fcafd3d3a018690b3799675
 F src/date.c 2f148728b53675266cd9e1a873fd702929d3f4ee
 F src/delete.c d92db30012503e0b1db45ff95dd0efd7118eaae7
 F src/experimental.c 50c1e3b34f752f4ac10c36f287db095c2b61766d
-F src/expr.c c541c569906daf6225d1a21afe4cba5d430233cd
+F src/expr.c 62f044ebff77bd7f486e3f214a963f0bfffd5d1b
 F src/func.c 96b26601c092b7b43a13e440e3f988b32a385f6a
 F src/hash.c 8747cf51d12de46512880dfcf1b68b4e24072863
 F src/hash.h 1b0c445e1c89ff2aaad9b4605ba61375af001e84
@@ -226,9 +226,9 @@ F test/select5.test 0b47058d3e916c1fc9fe81f44b438e02bade21ce
 F test/select6.test 22f4b0c591b75464519ec5085b3385ac60698eb2
 F test/select7.test 1bf795b948c133a15a2a5e99d3270e652ec58ce6
 F test/server1.test e328b8e641ba8fe9273132cfef497383185dc1f5
-F test/shared.test 9982a65ccf3f4eee844a19f3ab0bcd7a158a76e5
+F test/shared.test 8f8bc93c23b45ec63e1b11b8f3d8d018af47a58b
 F test/shared2.test 909fc0f0277684ed29cc1b36c8e159188aec7f28
-F test/shared_err.test 32d43ebe6b2a43b27227cc2cd153f5bcf9f0e8ad
+F test/shared_err.test ceb93bac112bcb1a6e57f5da56feae953148a543
 F test/sort.test 0e4456e729e5a92a625907c63dcdedfbe72c5dc5
 F test/subquery.test ae324ee928c5fb463a3ce08a8860d6e7f1ca5797
 F test/subselect.test 2d13fb7f450db3595adcdd24079a0dd1d2d6abc2
@@ -344,7 +344,7 @@ F www/tclsqlite.tcl bb0d1357328a42b1993d78573e587c6dcbc964b9
 F www/vdbe.tcl 87a31ace769f20d3627a64fa1fade7fed47b90d0
 F www/version3.tcl a99cf5f6d8bd4d5537584a2b342f0fb9fa601d8b
 F www/whentouse.tcl 97e2b5cd296f7d8057e11f44427dea8a4c2db513
-P 3e1e6affe256a950a81ad5939b628bafb8463b42
-R bc5b2ca65db1b6cb2127e17629a50b89
-U drh
-Z 123ef0750be477d63bf6489bbd9d0613
+P a65e85f0e01f3bca5f4e78999c10db3916824b5b
+R 3297151c316e2b9323e59dbed5915963
+U danielk1977
+Z 1bc72467bea30951a32409adca1d9341

manifest.uuid

@@ -1 +1 @@
-a65e85f0e01f3bca5f4e78999c10db3916824b5b
+cc2e8e87cfd474b4dc6833ee0c38e2cd2dd3a494

src/expr.c

@@ -12,7 +12,7 @@
 ** This file contains routines used for analyzing expressions and
 ** for generating VDBE code that evaluates expressions in SQLite.
 **
-** $Id: expr.c,v 1.250 2006/01/18 16:51:35 danielk1977 Exp $
+** $Id: expr.c,v 1.251 2006/01/23 05:50:58 danielk1977 Exp $
 */
 #include "sqliteInt.h"
 #include <ctype.h>
@@ -280,6 +280,7 @@ void sqlite3ExprSpan(Expr *pExpr, Token *pLeft, Token *pRight){
 */
 Expr *sqlite3ExprFunction(ExprList *pList, Token *pToken){
   Expr *pNew;
+  assert( pToken );
   pNew = sqliteMalloc( sizeof(Expr) );
   if( pNew==0 ){
     sqlite3ExprListDelete(pList); /* Avoid leaking memory when malloc fails */
@@ -287,12 +288,8 @@ Expr *sqlite3ExprFunction(ExprList *pList, Token *pToken){
   }
   pNew->op = TK_FUNCTION;
   pNew->pList = pList;
-  if( pToken ){
   assert( pToken->dyn==0 );
   pNew->token = *pToken;
-  }else{
-    pNew->token.z = 0;
-  }
   pNew->span = pNew->token;
   return pNew;
 }
@@ -2085,10 +2082,8 @@ void sqlite3ExprIfFalse(Parse *pParse, Expr *pExpr, int dest, int jumpIfNull){
 */
 int sqlite3ExprCompare(Expr *pA, Expr *pB){
   int i;
-  if( pA==0 ){
-    return pB==0;
-  }else if( pB==0 ){
-    return 0;
+  if( pA==0||pB==0 ){
+    return pB==pA;
   }
   if( pA->op!=pB->op ) return 0;
   if( (pA->flags & EP_Distinct)!=(pB->flags & EP_Distinct) ) return 0;

test/shared.test

@@ -9,7 +9,7 @@
 #
 #***********************************************************************
 #
-# $Id: shared.test,v 1.19 2006/01/19 08:43:32 danielk1977 Exp $
+# $Id: shared.test,v 1.20 2006/01/23 05:50:58 danielk1977 Exp $
 
 set testdir [file dirname $argv0]
 source $testdir/tester.tcl
@@ -63,6 +63,7 @@ incr av
 # shared-8.*: Tests related to the text encoding of shared-cache databases.
 # shared-9.*: TEMP triggers and shared-cache databases.
 # shared-10.*: Tests of sqlite3_close().
+# shared-11.*: Test transaction locking.
 #
 
 do_test shared-$av.1.1 {
@@ -787,6 +788,64 @@ do_test shared-$av.10.11 {
   db3 close
 } {}
 
+do_test shared-$av.11.1 {
+  file delete -force test.db
+  sqlite3 db  test.db
+  sqlite3 db2 test.db
+  execsql {
+    CREATE TABLE abc(a, b, c);
+    CREATE TABLE abc2(a, b, c);
+    BEGIN;
+    INSERT INTO abc VALUES(1, 2, 3);
+  }
+} {}
+do_test shared-$av.11.2 {
+  catchsql {BEGIN;} db2
+  catchsql {SELECT * FROM abc;} db2
+} {1 {database table is locked: abc}}
+do_test shared-$av.11.3 {
+  catchsql {BEGIN} db2
+} {1 {cannot start a transaction within a transaction}}
+do_test shared-$av.11.4 {
+  catchsql {SELECT * FROM abc2;} db2
+} {0 {}}
+do_test shared-$av.11.5 {
+  catchsql {INSERT INTO abc2 VALUES(1, 2, 3);} db2
+} {1 {database is locked}}
+do_test shared-$av.11.6 {
+  catchsql {SELECT * FROM abc2}
+} {0 {}}
+do_test shared-$av.11.6 {
+  execsql {
+    ROLLBACK;
+    PRAGMA read_uncommitted = 1;
+  } db2
+} {}
+do_test shared-$av.11.7 {
+  execsql {
+    INSERT INTO abc2 VALUES(4, 5, 6);
+    INSERT INTO abc2 VALUES(7, 8, 9);
+  }
+} {}
+do_test shared-$av.11.8 {
+  set res [list]
+  breakpoint
+  db2 eval {
+    SELECT abc.a as I, abc2.a as II FROM abc, abc2;
+  } {
+    execsql {
+      DELETE FROM abc WHERE 1;
+    }
+    lappend res $I $II
+  }
+  set res
+} {1 4 {} 7}
+
+do_test shared-$av.11.11 {
+  db close
+  db2 close
+} {}
+
 }
 
 sqlite3_enable_shared_cache $::enable_shared_cache

test/shared_err.test

@@ -13,7 +13,7 @@
 # cache context. What happens to connection B if one connection A encounters
 # an IO-error whilst reading or writing the file-system?
 #
-# $Id: shared_err.test,v 1.3 2006/01/21 12:08:55 danielk1977 Exp $
+# $Id: shared_err.test,v 1.4 2006/01/23 05:50:58 danielk1977 Exp $
 
 proc skip {args} {}
 
@@ -310,6 +310,16 @@ do_malloc_test 4 -tclprep {
   db2 close
 }
 
+do_malloc_test 5 -tclbody {
+  sqlite3 dbX test.db
+  sqlite3 dbY test.db
+  dbX close
+  dbY close
+} -cleanup {
+  catch {dbX close}
+  catch {dbY close}
+}
+
 catch {db close}
 sqlite3_enable_shared_cache $::enable_shared_cache
 finish_test