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libsql/libsql-sqlite3/ext/rtree/rtreedoc2.test
2023-10-16 13:58:16 +02:00

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# 2021 September 13
#
# The author disclaims copyright to this source code. In place of
# a legal notice, here is a blessing:
#
# May you do good and not evil.
# May you find forgiveness for yourself and forgive others.
# May you share freely, never taking more than you give.
#
#***********************************************************************
#
# The focus of this file is testing the r-tree extension.
#
if {![info exists testdir]} {
set testdir [file join [file dirname [info script]] .. .. test]
}
source [file join [file dirname [info script]] rtree_util.tcl]
source $testdir/tester.tcl
set testprefix rtreedoc2
ifcapable !rtree {
finish_test
return
}
#-------------------------------------------------------------------------
#-------------------------------------------------------------------------
# Section 6 of documentation.
#-------------------------------------------------------------------------
#-------------------------------------------------------------------------
set testprefix rtreedoc2-1
# EVIDENCE-OF: R-35254-48865 A call to one of the above APIs creates a
# new SQL function named by the second parameter (zQueryFunc or zGeom).
#
# [register_circle_geom db] registers new geometry callback "Qcircle"
# and legacy implementation "circle". Test that these do actually appear.
#
do_execsql_test 1.1.0 {
SELECT * FROM pragma_function_list WHERE name IN('circle', 'qcircle');
} {
}
do_test 1.1 {
register_circle_geom db
} {SQLITE_OK}
do_execsql_test 1.1.2 {
SELECT * FROM pragma_function_list WHERE name = 'circle' AND enc='utf8';
} {
circle 0 s utf8 -1 0
}
do_execsql_test 1.1.3 {
SELECT * FROM pragma_function_list WHERE name = 'qcircle' AND enc='utf8';
} {
qcircle 0 s utf8 -1 0
}
do_execsql_test 1.2.0 { SELECT circle(1, 2, 3); } {{}}
do_execsql_test 1.2.1 { SELECT qcircle(1, 2, 3); } {{}}
# EVIDENCE-OF: R-61427-46983
do_execsql_test 1.3.0 {
CREATE VIRTUAL TABLE demo_index USING rtree(id, x1,x2, y1,y2);
INSERT INTO demo_index VALUES(10, 45,45, 24,24);
INSERT INTO demo_index VALUES(20, 50,50, 28,28);
INSERT INTO demo_index VALUES(30, 43,43, 22,22);
}
do_execsql_test 1.3.1 {
SELECT id FROM demo_index WHERE id MATCH circle(45.3, 22.9, 5.0)
} {10 30}
# EVIDENCE-OF: R-16907-50223 The SQL syntax for custom queries is the
# same regardless of which interface, sqlite3_rtree_geometry_callback()
# or sqlite3_rtree_query_callback(), is used to register the SQL
# function.
do_execsql_test 1.3.2 {
SELECT id FROM demo_index WHERE id MATCH qcircle(45.3, 22.9, 5.0, 1)
} {10 30}
# EVIDENCE-OF: R-59634-51678 When that SQL function appears on the
# right-hand side of the MATCH operator and the left-hand side of the
# MATCH operator is any column in the R*Tree virtual table, then the
# callback defined by the third argument (xQueryFunc or xGeom) is
# invoked to determine if a particular object or subtree overlaps the
# desired region.
proc box_geom {args} {
lappend ::box_geom [concat [lindex $args 0] [lrange $args 2 end-1]]
return ""
}
register_box_geom db box_geom
set box_geom [list]
do_execsql_test 1.3.2 {
SELECT id FROM demo_index WHERE id MATCH box(43,46, 21,25);
} {10 30}
do_test 1.3.3 {
set ::box_geom
} [list {*}{
{box {43.0 46.0 21.0 25.0} {45.0 45.0 24.0 24.0}}
{box {43.0 46.0 21.0 25.0} {50.0 50.0 28.0 28.0}}
{box {43.0 46.0 21.0 25.0} {43.0 43.0 22.0 22.0}}
}]
#-------------------------------------------------------------------------
#-------------------------------------------------------------------------
# Section 6 of documentation.
#-------------------------------------------------------------------------
#-------------------------------------------------------------------------
set testprefix rtreedoc2-2
# EVIDENCE-OF: R-02424-24769 The second argument is the number of
# coordinates in each r-tree entry, and is always the same for any given
# R*Tree.
#
# EVIDENCE-OF: R-40260-16838 The number of coordinates is 2 for a
# 1-dimensional R*Tree, 4 for a 2-dimensional R*Tree, 6 for a
# 3-dimensional R*Tree, and so forth.
#
# The second argument refered to above is the length of the list passed
# as the 3rd parameter to the Tcl script.
#
do_execsql_test 1.0 {
CREATE VIRTUAL TABLE rt1 USING rtree(id, x1,x2);
CREATE VIRTUAL TABLE rt2 USING rtree(id, x1,x2, y1,y2);
CREATE VIRTUAL TABLE rt3 USING rtree(id, x1,x2, y1,y2, z1,z2);
INSERT INTO rt1 DEFAULT VALUES;
INSERT INTO rt2 DEFAULT VALUES;
INSERT INTO rt3 DEFAULT VALUES;
}
foreach {tn tbl nCoord} {
1 rt1 2
2 rt2 4
3 rt3 6
} {
set ::box_geom [list]
do_catchsql_test 1.$tn.1 "
SELECT id FROM $tbl WHERE id MATCH box();
" {1 {SQL logic error}}
do_test 1.$tn.2 {
llength [lindex $::box_geom 0 2]
} $nCoord
}
# EVIDENCE-OF: R-28051-48608 If xGeom returns anything other than
# SQLITE_OK, then the r-tree query will abort with an error.
proc box_geom {args} {
error "an error!"
}
do_catchsql_test 2.0 {
SELECT * FROM rt2 WHERE id MATCH box(22,23, 24,25);
} {1 {SQL logic error}}
do_execsql_test 3.0 {
INSERT INTO rt1 VALUES(10, 10, 10);
INSERT INTO rt1 VALUES(11, 11, 11);
INSERT INTO rt1 VALUES(12, 12, 12);
INSERT INTO rt1 VALUES(13, 13, 13);
INSERT INTO rt1 VALUES(14, 14, 14);
}
# EVIDENCE-OF: R-53759-57366 The exact same sqlite3_rtree_geometry
# structure is used for every callback for same MATCH operator in the
# same query.
proc box_geom {args} {
lappend ::ptr_list [lindex $args 4]
return 0
}
set ::ptr_list [list]
do_execsql_test 3.1 {
SELECT * FROM rt1 WHERE id MATCH box(1,1);
}
do_test 3.2 {
set val [lindex $::ptr_list 0]
foreach p $::ptr_list {
if {$p!=$val} {error "pointer mismatch"}
}
} {}
# EVIDENCE-OF: R-60247-35692 The contents of the sqlite3_rtree_geometry
# structure are initialized by SQLite but are not subsequently modified.
proc box_geom {args} {
lappend ::box_geom [concat [lindex $args 0] [lrange $args 2 end-1]]
if {[llength $::box_geom]==3} {
return "zero"
}
return ""
}
set ::box_geom [list]
do_catchsql_test 3.2 {
SELECT * FROM rt1 WHERE id MATCH box(1,1);
} {1 {SQL logic error}}
do_test 3.3 {
set ::box_geom
} [list {*}{
{box {1.0 1.0} {0.0 0.0}}
{box {1.0 1.0} {10.0 10.0}}
{box {1.0 1.0} {11.0 11.0}}
{box 0.0 {12.0 12.0}}
}]
# EVIDENCE-OF: R-31246-29731 The pContext member of the
# sqlite3_rtree_geometry structure is always set to a copy of the
# pContext argument passed to sqlite3_rtree_geometry_callback() when the
# callback is registered.
reset_db
do_execsql_test 4.0 {
CREATE VIRTUAL TABLE r1 USING rtree(id, minX,maxX, minY,maxY);
WITH s(i) AS (
VALUES(1) UNION ALL SELECT i+1 FROM s WHERE i<120
)
INSERT INTO r1 SELECT i,i,i+1, 200,201 FROM s;
}
set ctx [register_box_geom db box_geom]
set ::box_geom [list]
proc box_geom {args} {
lappend ::box_geom [lindex $args 1]
return ""
}
do_execsql_test 4.1 {
SELECT count(*) FROM r1 WHERE id MATCH box(0,150,199,201)
} 120
do_test 4.2 {
foreach g $::box_geom {
if {$g!=$ctx} {error "pointer mismatch"}
}
} {}
# EVIDENCE-OF: R-09904-19077 The aParam[] array (size nParam) contains
# the parameter values passed to the SQL function on the right-hand side
# of the MATCH operator.
proc box_geom {args} {
set ::box_geom [lindex $args 2]
}
foreach {tn q vals} {
1 "SELECT count(*) FROM r1 WHERE id MATCH box(1,2,3)" {1.0 2.0 3.0}
2 "SELECT count(*) FROM r1 WHERE id MATCH box(10001)" {10001.0}
3 "SELECT count(*) FROM r1 WHERE id MATCH box(-10001)" {-10001.0}
} {
do_catchsql_test 5.$tn.1 $q {1 {SQL logic error}}
do_test 5.$tn.2 { set ::box_geom } $vals
}
do_execsql_test 5.0 {
CREATE VIRTUAL TABLE myrtree USING rtree(id, x1,x2);
INSERT INTO myrtree VALUES(1, 1, 1);
INSERT INTO myrtree VALUES(2, 2, 2);
INSERT INTO myrtree VALUES(3, 3, 3);
}
# EVIDENCE-OF: R-44448-00687 The pUser and xDelUser members of the
# sqlite3_rtree_geometry structure are initially set to NULL.
set ::box_geom_calls 0
proc box_geom {args} {
incr ::box_geom_calls
return user_is_zero
}
do_execsql_test 5.1.1 {
SELECT * FROM myrtree WHERE id MATCH box(4, 5);
}
do_test 5.1.2 { set ::box_geom_calls } 3
# EVIDENCE-OF: R-55837-00155 The pUser variable may be set by the
# callback implementation to any arbitrary value that may be useful to
# subsequent invocations of the callback within the same query (for
# example, a pointer to a complicated data structure used to test for
# region intersection).
#
# EVIDENCE-OF: R-34745-08839 If the xDelUser variable is set to a
# non-NULL value, then after the query has finished running SQLite
# automatically invokes it with the value of the pUser variable as the
# only argument.
#
set ::box_geom_calls 0
proc box_geom {args} {
incr ::box_geom_calls
switch -- $::box_geom_calls {
1 {
return user_is_zero
}
2 {
return [list user box_geom_finalizer]
}
}
return ""
}
proc box_geom_finalizer {} {
set ::box_geom_finalizer "::box_geom_calls is $::box_geom_calls"
}
do_execsql_test 5.1.1 {
SELECT * FROM myrtree WHERE id MATCH box(4, 5);
}
do_test 5.1.2 { set ::box_geom_calls } 3
do_test 5.1.3 {
set ::box_geom_finalizer
} {::box_geom_calls is 3}
# EVIDENCE-OF: R-28176-28813 The xGeom callback always does a
# depth-first search of the r-tree.
#
# For a breadth first search, final test case would return "B L" only.
#
do_execsql_test 6.0 {
CREATE VIRTUAL TABLE xyz USING rtree(x, x1,x2, y1,y2);
WITH s(i) AS (
VALUES(1) UNION ALL SELECT i+1 FROM s WHERE i<15
)
INSERT INTO xyz SELECT NULL, one.i,one.i+1, two.i,two.i+1 FROM s one, s two;
}
do_execsql_test 6.1 {
SELECT count(*) FROM xyz_node
} {10}
proc box_geom {args} {
set coords [lindex $args 3]
set area [expr {
([lindex $coords 1]-[lindex $coords 0]) *
([lindex $coords 3]-[lindex $coords 2])
}]
if {$area==1} {
lappend ::box_geom_calls L
} else {
lappend ::box_geom_calls B
}
}
set ::box_geom_calls [list]
do_execsql_test 6.2 {
SELECT count(*) FROM xyz WHERE x MATCH box(0,20,0,20)
} 225
do_test 6.3 {
set prev ""
set box_calls [list]
foreach c $::box_geom_calls {
if {$c!=$prev} {
lappend ::box_calls $c
set prev $c
}
}
set ::box_calls
} {B L B L B L B L B L B L B L B L B L}
finish_test