Improve tests in bestindexF.test. No changes to non-test code.

FossilOrigin-Name: 347d4d34c1815827e7049e57830c1fff67f6eb16ae5cc00839e35d94bac81e92

manifest

@@ -1,5 +1,5 @@
-C Better\sorderByConsumed\slogic\sin\sthe\svt02.c\stest\svirtual\stable.
-D 2025-12-18T15:35:50.492
+C Improve\stests\sin\sbestindexF.test.\sNo\schanges\sto\snon-test\scode.
+D 2025-12-18T16:05:05.184
 F .fossil-settings/binary-glob 61195414528fb3ea9693577e1980230d78a1f8b0a54c78cf1b9b24d0a409ed6a x
 F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
 F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
@@ -918,7 +918,7 @@ F test/bestindexB.test 328b97b69cd1a20928d5997f9ecb04d2e00f1d18e19ab27f9e9adb44d
 F test/bestindexC.test 95b4a527b1a5d07951d731604a6d4cf7e5a806b39cea0e7819d4c9667e11c3fc
 F test/bestindexD.test 6a8f6f84990bcf17dfa59652a1f935beddb7afd96f8302830fbc86b0a13df3c3
 F test/bestindexE.test 297f3ea8500a8f3c17d6f78e55bdfee089064c6144ee84a110bd005a03338f49
-F test/bestindexF.test ea06ec01aa82cea997c02eb2a8f07f4eb83582a2afb0b8d6416189d08777a537
+F test/bestindexF.test 32b5975a28d73ab2def2a2ef49d10ab992182ca62679e179907fe187d735f62d
 F test/between.test e7587149796101cbe8d5f8abae8d2a7b87f04d8226610aa1091615005dcf4d54
 F test/bigfile.test aa74f4e5db51c8e54a1d9de9fa65d01d1eb20b59
 F test/bigfile2.test 1b489a3a39ae90c7f027b79110d6b4e1dbc71bfc
@@ -2187,8 +2187,8 @@ F tool/version-info.c 33d0390ef484b3b1cb685d59362be891ea162123cea181cb8e6d2cf6dd
 F tool/warnings-clang.sh bbf6a1e685e534c92ec2bfba5b1745f34fb6f0bc2a362850723a9ee87c1b31a7
 F tool/warnings.sh d924598cf2f55a4ecbc2aeb055c10bd5f48114793e7ba25f9585435da29e7e98
 F tool/win/sqlite.vsix deb315d026cc8400325c5863eef847784a219a2f
-P acc95f24cc034408de1e9225aef4dae8bf76beec812c152bea32db95f7d2b854
-R 690b929b38217f93c8bcc4c1a9492cf4
-U drh
-Z 70ea1398d8aa129f5457ba79d55fdf37
+P 612c1ece6752e3318fc688717ad6a82219b85df7d32e4e07dbc2f361a5aeeee4
+R 580ea8657cb3efb5b82ff2a1e13c7fc2
+U dan
+Z 99a67f6205f5b3113357bf79d420e775
 # Remove this line to create a well-formed Fossil manifest.

manifest.uuid

@@ -1 +1 @@
-612c1ece6752e3318fc688717ad6a82219b85df7d32e4e07dbc2f361a5aeeee4
+347d4d34c1815827e7049e57830c1fff67f6eb16ae5cc00839e35d94bac81e92

test/bestindexF.test

@@ -108,25 +108,43 @@ proc vtab_command {method args} {
       set ::vtab_orderby  [$hdl orderby]
       set ::vtab_distinct [$hdl distinct]
 
-      if {$::vtab_orderby == "{column 0 desc 1}" || $::vtab_distinct==1} {
-        return [list orderby 1]
+      # Set idxNum to 1 if DISTINCT is to be used in xFilter.
+      #
+      set idxStr [list ""]
+      if {$::vtab_distinct==2 || $::vtab_distinct==3} {
+        set idxStr [list DISTINCT]
       }
 
+      set orderby 0
+      if {$::vtab_orderby == "{column 0 desc 1}" 
+       || $::vtab_orderby == "{column 0 desc 0}"
+      } {
+        set orderby 1
+        if {$::vtab_distinct==1 || $::vtab_distinct==2} {
+          lappend idxStr "ORDER BY ((a+2)%5)"
+        } else {
+          set sort "ORDER BY a"
+          if {$::vtab_orderby == "{column 0 desc 1}"} {
+            append sort " DESC"
+          }
+          lappend idxStr $sort
+        }
+      } else {
+        lappend idxStr ""
+      }
+
+      return [list orderby $orderby idxstr $idxStr]
       return ""
     }
 
     xFilter {
-      set sql {
-        SELECT 1, 2, 'a', 555
-          UNION ALL
-        SELECT 2, 2, 'a', NULL
-          UNION ALL
-        SELECT 3, 1, 'b', 'text'
-          UNION ALL
-        SELECT 4, 1, 'a', 3.14
-          UNION ALL
-        SELECT 5, 1, 'b', 0
-      }
+      set idxstr [lindex $args 1]
+
+      set distinct [lindex $idxstr 0]
+      set orderby  [lindex $idxstr 1]
+      set sql "
+        SELECT $distinct 0, a, b FROM real_t1 $orderby
+      "
       return [list sql $sql]
     }
   }
@@ -134,26 +152,115 @@ proc vtab_command {method args} {
   return {}
 }
 
+do_execsql_test 2.0 {
+  CREATE TABLE real_t1(a, b);
+
+  INSERT INTO real_t1 VALUES (1, 'a');
+  INSERT INTO real_t1 VALUES (2, 'a');
+  INSERT INTO real_t1 VALUES (1, 'a');
+
+  INSERT INTO real_t1 VALUES (2, 'b');
+  INSERT INTO real_t1 VALUES (1, 'b');
+  INSERT INTO real_t1 VALUES (2, 'b');
+
+  INSERT INTO real_t1 VALUES (3, 'a');
+  INSERT INTO real_t1 VALUES (4, 'b');
+  INSERT INTO real_t1 VALUES (3, 'a');
+
+  INSERT INTO real_t1 VALUES (4, 'b');
+  INSERT INTO real_t1 VALUES (3, 'a');
+  INSERT INTO real_t1 VALUES (4, 'b');
+}
+
 register_tcl_module db
 do_execsql_test 2.0 {
   CREATE VIRTUAL TABLE t1 USING tcl(vtab_command)
 }
 
 do_execsql_test 2.1 {
-  SELECT a, count(*) FROM t1 GROUP BY a ORDER BY a;
-} {1 3 2 2}
+  SELECT a, b FROM t1
+} {
+  1 a 2 a 1 a 
+  2 b 1 b 2 b 
+  3 a 4 b 3 a 
+  4 b 3 a 4 b
+}
 
-do_test 2.2 {
-  list $::vtab_distinct $::vtab_orderby
-} {0 {{column 0 desc 0}}}
+# This is like do_execsql_test, except one value is prepended to the
+# expected result - the P4 (idxStr) of the VFilter opcode. It is an error 
+# if $sql generates two or more VFilter instructions.
+#
+proc do_vtabsorter_test {tn sql expect} {
+  set vm [db eval "EXPLAIN $sql"]
 
-do_execsql_test 2.3 {
-  SELECT a, count(*) FROM t1 GROUP BY a ORDER BY a DESC;
-} {2 2 1 3}
+  set ii [lsearch $vm VFilter]
+  set ::res [lindex $vm [expr $ii+4]]
 
-do_test 2.4 {
-  list $::vtab_distinct $::vtab_orderby
-} {0 {{column 0 desc 1}}}
+  set iSort [lsearch $vm SorterSort]
+  if {$iSort>=0} {
+    error "query is using sorter"
+  }
 
+  uplevel [list do_test $tn.1 { set ::res } [lindex $expect 0]]
+  uplevel [list do_execsql_test $tn.2 $sql [lrange $expect 1 end]]
+}
+
+do_vtabsorter_test 2.2 {
+  SELECT a, b FROM t1
+} { "{} {}"
+  1 a 2 a 1 a 
+  2 b 1 b 2 b 
+  3 a 4 b 3 a 
+  4 b 3 a 4 b
+}
+
+do_vtabsorter_test 2.3 {
+  SELECT DISTINCT a FROM t1
+} { "DISTINCT {ORDER BY ((a+2)%5)}"
+  3 4 1 2
+}
+
+do_vtabsorter_test 2.4 {
+  SELECT DISTINCT a FROM t1 ORDER BY a
+} { "DISTINCT {ORDER BY a}"
+  1 2 3 4
+}
+
+do_vtabsorter_test 2.5 {
+  SELECT a FROM t1 ORDER BY a
+} { "{} {ORDER BY a}"
+  1 1 1
+  2 2 2
+  3 3 3
+  4 4 4
+}
+
+do_vtabsorter_test 2.6 {
+  SELECT a, count(*) FROM t1 GROUP BY a ORDER BY a
+} { "{} {ORDER BY a}"
+  1 3
+  2 3
+  3 3
+  4 3
+}
+
+do_vtabsorter_test 2.7 {
+  SELECT a, count(*) FROM t1 GROUP BY a
+} { "{} {ORDER BY ((a+2)%5)}"
+  3 3
+  4 3
+  1 3
+  2 3
+}
+
+do_vtabsorter_test 2.8 {
+  SELECT DISTINCT a, count(*) FROM t1 GROUP BY a
+} { "{} {ORDER BY ((a+2)%5)}"
+  3 3
+  4 3
+  1 3
+  2 3
+}
 
 finish_test
+