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+# 2012 December 17
+#
+# 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.
+#
+#***********************************************************************
+# This file implements regression tests for SQLite library.
+#
+# This file tests the PRAGMA foreign_key_check command.
+#
+# EVIDENCE-OF: R-15402-03103 PRAGMA schema.foreign_key_check; PRAGMA
+# schema.foreign_key_check(table-name);
+#
+# EVIDENCE-OF: R-41653-15278 The foreign_key_check pragma checks the
+# database, or the table called "table-name", for foreign key
+# constraints that are violated. The foreign_key_check pragma returns
+# one row output for each foreign key violation.
+
+set testdir [file dirname $argv0]
+source $testdir/tester.tcl
+set testprefix fkey5
+
+ifcapable {!foreignkey} {
+ finish_test
+ return
+}
+
+do_test fkey5-1.1 {
+ db eval {
+ CREATE TABLE p1(a INTEGER PRIMARY KEY); INSERT INTO p1 VALUES(88),(89);
+ CREATE TABLE p2(a INT PRIMARY KEY); INSERT INTO p2 VALUES(77),(78);
+ CREATE TABLE p3(a TEXT PRIMARY KEY);
+ INSERT INTO p3 VALUES(66),(67),('alpha'),('BRAVO');
+ CREATE TABLE p4(a TEXT PRIMARY KEY COLLATE nocase);
+ INSERT INTO p4 VALUES('alpha'),('BRAVO'),('55'),('Delta'),('ECHO');
+ CREATE TABLE p5(a INTEGER PRIMARY KEY, b, c, UNIQUE(b,c));
+ INSERT INTO p5 VALUES(1,'Alpha','abc'),(2,'beta','def');
+ CREATE TABLE p6(a INTEGER PRIMARY KEY, b TEXT COLLATE nocase,
+ c TEXT COLLATE rtrim, UNIQUE(b,c));
+ INSERT INTO p6 VALUES(1,'Alpha','abc '),(2,'bETA','def ');
+
+ CREATE TABLE c1(x INTEGER PRIMARY KEY references p1);
+ CREATE TABLE c2(x INTEGER PRIMARY KEY references p2);
+ CREATE TABLE c3(x INTEGER PRIMARY KEY references p3);
+ CREATE TABLE c4(x INTEGER PRIMARY KEY references p4);
+ CREATE TABLE c5(x INT references p1);
+ CREATE TABLE c6(x INT references p2);
+ CREATE TABLE c7(x INT references p3);
+ CREATE TABLE c8(x INT references p4);
+ CREATE TABLE c9(x TEXT UNIQUE references p1);
+ CREATE TABLE c10(x TEXT UNIQUE references p2);
+ CREATE TABLE c11(x TEXT UNIQUE references p3);
+ CREATE TABLE c12(x TEXT UNIQUE references p4);
+ CREATE TABLE c13(x TEXT COLLATE nocase references p3);
+ CREATE TABLE c14(x TEXT COLLATE nocase references p4);
+ CREATE TABLE c15(x, y, FOREIGN KEY(x,y) REFERENCES p5(b,c));
+ CREATE TABLE c16(x, y, FOREIGN KEY(x,y) REFERENCES p5(c,b));
+ CREATE TABLE c17(x, y, FOREIGN KEY(x,y) REFERENCES p6(b,c));
+ CREATE TABLE c18(x, y, FOREIGN KEY(x,y) REFERENCES p6(c,b));
+ CREATE TABLE c19(x TEXT COLLATE nocase, y TEXT COLLATE rtrim,
+ FOREIGN KEY(x,y) REFERENCES p5(b,c));
+ CREATE TABLE c20(x TEXT COLLATE nocase, y TEXT COLLATE rtrim,
+ FOREIGN KEY(x,y) REFERENCES p5(c,b));
+ CREATE TABLE c21(x TEXT COLLATE nocase, y TEXT COLLATE rtrim,
+ FOREIGN KEY(x,y) REFERENCES p6(b,c));
+ CREATE TABLE c22(x TEXT COLLATE nocase, y TEXT COLLATE rtrim,
+ FOREIGN KEY(x,y) REFERENCES p6(c,b));
+
+ PRAGMA foreign_key_check;
+ }
+} {}
+do_test fkey5-1.2 {
+ db eval {
+ INSERT INTO c1 VALUES(90),(87),(88);
+ PRAGMA foreign_key_check;
+ }
+} {c1 87 p1 0 c1 90 p1 0}
+do_test fkey5-1.2b {
+ db eval {
+ PRAGMA main.foreign_key_check;
+ }
+} {c1 87 p1 0 c1 90 p1 0}
+do_test fkey5-1.2c {
+ db eval {
+ PRAGMA temp.foreign_key_check;
+ }
+} {}
+do_test fkey5-1.3 {
+ db eval {
+ PRAGMA foreign_key_check(c1);
+ }
+} {c1 87 p1 0 c1 90 p1 0}
+do_test fkey5-1.4 {
+ db eval {
+ PRAGMA foreign_key_check(c2);
+ }
+} {}
+do_test fkey5-1.5 {
+ db eval {
+ PRAGMA main.foreign_key_check(c2);
+ }
+} {}
+do_test fkey5-1.6 {
+ catchsql {
+ PRAGMA temp.foreign_key_check(c2);
+ }
+} {1 {no such table: temp.c2}}
+
+# EVIDENCE-OF: R-45728-08709 There are four columns in each result row.
+#
+# EVIDENCE-OF: R-55672-01620 The first column is the name of the table
+# that contains the REFERENCES clause.
+#
+# EVIDENCE-OF: R-00471-55166 The second column is the rowid of the row
+# that contains the invalid REFERENCES clause, or NULL if the child
+# table is a WITHOUT ROWID table.
+#
+# The second clause in the previous is tested by fkey5-10.3.
+#
+# EVIDENCE-OF: R-40482-20265 The third column is the name of the table
+# that is referred to.
+#
+# EVIDENCE-OF: R-62839-07969 The fourth column is the index of the
+# specific foreign key constraint that failed.
+#
+do_test fkey5-2.0 {
+ db eval {
+ INSERT INTO c5 SELECT x FROM c1;
+ DELETE FROM c1;
+ PRAGMA foreign_key_check;
+ }
+} {c5 1 p1 0 c5 3 p1 0}
+do_test fkey5-2.1 {
+ db eval {
+ PRAGMA foreign_key_check(c5);
+ }
+} {c5 1 p1 0 c5 3 p1 0}
+do_test fkey5-2.2 {
+ db eval {
+ PRAGMA foreign_key_check(c1);
+ }
+} {}
+do_execsql_test fkey5-2.3 {
+ PRAGMA foreign_key_list(c5);
+} {0 0 p1 x {} {NO ACTION} {NO ACTION} NONE}
+
+do_test fkey5-3.0 {
+ db eval {
+ INSERT INTO c9 SELECT x FROM c5;
+ DELETE FROM c5;
+ PRAGMA foreign_key_check;
+ }
+} {c9 1 p1 0 c9 3 p1 0}
+do_test fkey5-3.1 {
+ db eval {
+ PRAGMA foreign_key_check(c9);
+ }
+} {c9 1 p1 0 c9 3 p1 0}
+do_test fkey5-3.2 {
+ db eval {
+ PRAGMA foreign_key_check(c5);
+ }
+} {}
+
+do_test fkey5-4.0 {
+ db eval {
+ DELETE FROM c9;
+ INSERT INTO c2 VALUES(79),(77),(76);
+ PRAGMA foreign_key_check;
+ }
+} {c2 76 p2 0 c2 79 p2 0}
+do_test fkey5-4.1 {
+ db eval {
+ PRAGMA foreign_key_check(c2);
+ }
+} {c2 76 p2 0 c2 79 p2 0}
+do_test fkey5-4.2 {
+ db eval {
+ INSERT INTO c6 SELECT x FROM c2;
+ DELETE FROM c2;
+ PRAGMA foreign_key_check;
+ }
+} {c6 1 p2 0 c6 3 p2 0}
+do_test fkey5-4.3 {
+ db eval {
+ PRAGMA foreign_key_check(c6);
+ }
+} {c6 1 p2 0 c6 3 p2 0}
+do_test fkey5-4.4 {
+ db eval {
+ INSERT INTO c10 SELECT x FROM c6;
+ DELETE FROM c6;
+ PRAGMA foreign_key_check;
+ }
+} {c10 1 p2 0 c10 3 p2 0}
+do_test fkey5-4.5 {
+ db eval {
+ PRAGMA foreign_key_check(c10);
+ }
+} {c10 1 p2 0 c10 3 p2 0}
+
+do_test fkey5-5.0 {
+ db eval {
+ DELETE FROM c10;
+ INSERT INTO c3 VALUES(68),(67),(65);
+ PRAGMA foreign_key_check;
+ }
+} {c3 65 p3 0 c3 68 p3 0}
+do_test fkey5-5.1 {
+ db eval {
+ PRAGMA foreign_key_check(c3);
+ }
+} {c3 65 p3 0 c3 68 p3 0}
+do_test fkey5-5.2 {
+ db eval {
+ INSERT INTO c7 SELECT x FROM c3;
+ INSERT INTO c7 VALUES('Alpha'),('alpha'),('foxtrot');
+ DELETE FROM c3;
+ PRAGMA foreign_key_check;
+ }
+} {c7 1 p3 0 c7 3 p3 0 c7 4 p3 0 c7 6 p3 0}
+do_test fkey5-5.3 {
+ db eval {
+ PRAGMA foreign_key_check(c7);
+ }
+} {c7 1 p3 0 c7 3 p3 0 c7 4 p3 0 c7 6 p3 0}
+do_test fkey5-5.4 {
+ db eval {
+ INSERT INTO c11 SELECT x FROM c7;
+ DELETE FROM c7;
+ PRAGMA foreign_key_check;
+ }
+} {c11 1 p3 0 c11 3 p3 0 c11 4 p3 0 c11 6 p3 0}
+do_test fkey5-5.5 {
+ db eval {
+ PRAGMA foreign_key_check(c11);
+ }
+} {c11 1 p3 0 c11 3 p3 0 c11 4 p3 0 c11 6 p3 0}
+
+do_test fkey5-6.0 {
+ db eval {
+ DELETE FROM c11;
+ INSERT INTO c4 VALUES(54),(55),(56);
+ PRAGMA foreign_key_check;
+ }
+} {c4 54 p4 0 c4 56 p4 0}
+do_test fkey5-6.1 {
+ db eval {
+ PRAGMA foreign_key_check(c4);
+ }
+} {c4 54 p4 0 c4 56 p4 0}
+do_test fkey5-6.2 {
+ db eval {
+ INSERT INTO c8 SELECT x FROM c4;
+ INSERT INTO c8 VALUES('Alpha'),('ALPHA'),('foxtrot');
+ DELETE FROM c4;
+ PRAGMA foreign_key_check;
+ }
+} {c8 1 p4 0 c8 3 p4 0 c8 6 p4 0}
+do_test fkey5-6.3 {
+ db eval {
+ PRAGMA foreign_key_check(c8);
+ }
+} {c8 1 p4 0 c8 3 p4 0 c8 6 p4 0}
+do_test fkey5-6.4 {
+ db eval {
+ INSERT INTO c12 SELECT x FROM c8;
+ DELETE FROM c8;
+ PRAGMA foreign_key_check;
+ }
+} {c12 1 p4 0 c12 3 p4 0 c12 6 p4 0}
+do_test fkey5-6.5 {
+ db eval {
+ PRAGMA foreign_key_check(c12);
+ }
+} {c12 1 p4 0 c12 3 p4 0 c12 6 p4 0}
+
+do_test fkey5-7.1 {
+ set res {}
+ db eval {
+ INSERT OR IGNORE INTO c13 SELECT * FROM c12;
+ INSERT OR IGNORE INTO C14 SELECT * FROM c12;
+ DELETE FROM c12;
+ PRAGMA foreign_key_check;
+ } {
+ lappend res [list $table $rowid $fkid $parent]
+ }
+ lsort $res
+} {{c13 1 0 p3} {c13 2 0 p3} {c13 3 0 p3} {c13 4 0 p3} {c13 5 0 p3} {c13 6 0 p3} {c14 1 0 p4} {c14 3 0 p4} {c14 6 0 p4}}
+do_test fkey5-7.2 {
+ db eval {
+ PRAGMA foreign_key_check(c14);
+ }
+} {c14 1 p4 0 c14 3 p4 0 c14 6 p4 0}
+do_test fkey5-7.3 {
+ db eval {
+ PRAGMA foreign_key_check(c13);
+ }
+} {c13 1 p3 0 c13 2 p3 0 c13 3 p3 0 c13 4 p3 0 c13 5 p3 0 c13 6 p3 0}
+
+do_test fkey5-8.0 {
+ db eval {
+ DELETE FROM c13;
+ DELETE FROM c14;
+ INSERT INTO c19 VALUES('alpha','abc');
+ PRAGMA foreign_key_check(c19);
+ }
+} {c19 1 p5 0}
+do_test fkey5-8.1 {
+ db eval {
+ DELETE FROM c19;
+ INSERT INTO c19 VALUES('Alpha','abc');
+ PRAGMA foreign_key_check(c19);
+ }
+} {}
+do_test fkey5-8.2 {
+ db eval {
+ INSERT INTO c20 VALUES('Alpha','abc');
+ PRAGMA foreign_key_check(c20);
+ }
+} {c20 1 p5 0}
+do_test fkey5-8.3 {
+ db eval {
+ DELETE FROM c20;
+ INSERT INTO c20 VALUES('abc','Alpha');
+ PRAGMA foreign_key_check(c20);
+ }
+} {}
+do_test fkey5-8.4 {
+ db eval {
+ INSERT INTO c21 VALUES('alpha','abc ');
+ PRAGMA foreign_key_check(c21);
+ }
+} {}
+do_test fkey5-8.5 {
+ db eval {
+ DELETE FROM c21;
+ INSERT INTO c19 VALUES('Alpha','abc');
+ PRAGMA foreign_key_check(c21);
+ }
+} {}
+do_test fkey5-8.6 {
+ db eval {
+ INSERT INTO c22 VALUES('Alpha','abc');
+ PRAGMA foreign_key_check(c22);
+ }
+} {c22 1 p6 0}
+do_test fkey5-8.7 {
+ db eval {
+ DELETE FROM c22;
+ INSERT INTO c22 VALUES('abc ','ALPHA');
+ PRAGMA foreign_key_check(c22);
+ }
+} {}
+
+
+#-------------------------------------------------------------------------
+# Tests 9.* verify that missing parent tables are handled correctly.
+#
+do_execsql_test 9.1.1 {
+ CREATE TABLE k1(x REFERENCES s1);
+ PRAGMA foreign_key_check(k1);
+} {}
+do_execsql_test 9.1.2 {
+ INSERT INTO k1 VALUES(NULL);
+ PRAGMA foreign_key_check(k1);
+} {}
+do_execsql_test 9.1.3 {
+ INSERT INTO k1 VALUES(1);
+ PRAGMA foreign_key_check(k1);
+} {k1 2 s1 0}
+
+do_execsql_test 9.2.1 {
+ CREATE TABLE k2(x, y, FOREIGN KEY(x, y) REFERENCES s1(a, b));
+ PRAGMA foreign_key_check(k2);
+} {}
+do_execsql_test 9.2 {
+ INSERT INTO k2 VALUES(NULL, 'five');
+ PRAGMA foreign_key_check(k2);
+} {}
+do_execsql_test 9.3 {
+ INSERT INTO k2 VALUES('one', NULL);
+ PRAGMA foreign_key_check(k2);
+} {}
+do_execsql_test 9.4 {
+ INSERT INTO k2 VALUES('six', 'seven');
+ PRAGMA foreign_key_check(k2);
+} {k2 3 s1 0}
+
+#-------------------------------------------------------------------------
+# Test using a WITHOUT ROWID table as the child table with an INTEGER
+# PRIMARY KEY as the parent key.
+#
+reset_db
+do_execsql_test 10.1 {
+ CREATE TABLE p30 (id INTEGER PRIMARY KEY);
+ CREATE TABLE IF NOT EXISTS c30 (
+ line INTEGER,
+ master REFERENCES p30(id),
+ PRIMARY KEY(master)
+ ) WITHOUT ROWID;
+
+ INSERT INTO p30 (id) VALUES (1);
+ INSERT INTO c30 (master, line) VALUES (1, 999);
+}
+do_execsql_test 10.2 {
+ PRAGMA foreign_key_check;
+}
+# EVIDENCE-OF: R-00471-55166 The second column is the rowid of the row
+# that contains the invalid REFERENCES clause, or NULL if the child
+# table is a WITHOUT ROWID table.
+do_execsql_test 10.3 {
+ INSERT INTO c30 VALUES(45, 45);
+ PRAGMA foreign_key_check;
+} {c30 {} p30 0}
+
+#-------------------------------------------------------------------------
+# Test "foreign key mismatch" errors.
+#
+reset_db
+do_execsql_test 11.0 {
+ CREATE TABLE tt(y);
+ CREATE TABLE c11(x REFERENCES tt(y));
+}
+do_catchsql_test 11.1 {
+ PRAGMA foreign_key_check;
+} {1 {foreign key mismatch - "c11" referencing "tt"}}
+
+# 2020-07-03 Bug in foreign_key_check discovered while working on the
+# forum reports that pragma_foreign_key_check does not accept an argument:
+# If two separate schemas seem to reference one another, that causes
+# problems for foreign_key_check.
+#
+reset_db
+do_execsql_test 12.0 {
+ ATTACH ':memory:' as aux;
+ CREATE TABLE aux.t1(a INTEGER PRIMARY KEY, b TEXT REFERENCES t2);
+ CREATE TABLE main.t2(x TEXT PRIMARY KEY, y INT);
+ INSERT INTO main.t2 VALUES('abc',11),('def',22),('xyz',99);
+ INSERT INTO aux.t1 VALUES(5,'abc'),(7,'xyz'),(9,'oops');
+ PRAGMA foreign_key_check=t1;
+} {t1 5 t2 0 t1 7 t2 0 t1 9 t2 0}
+do_execsql_test 12.1 {
+ CREATE TABLE aux.t2(x TEXT PRIMARY KEY, y INT);
+ INSERT INTO aux.t2 VALUES('abc',11),('def',22),('xyz',99);
+ PRAGMA foreign_key_check=t1;
+} {t1 9 t2 0}
+
+# 2020-07-03: the pragma_foreign_key_check virtual table should
+# accept arguments for the table name and/or schema name.
+#
+ifcapable vtab {
+ do_execsql_test 13.0 {
+ SELECT *, 'x' FROM pragma_foreign_key_check('t1');
+ } {t1 9 t2 0 x}
+ do_catchsql_test 13.1 {
+ SELECT *, 'x' FROM pragma_foreign_key_check('t1','main');
+ } {1 {no such table: main.t1}}
+ do_execsql_test 13.2 {
+ SELECT *, 'x' FROM pragma_foreign_key_check('t1','aux');
+ } {t1 9 t2 0 x}
+}
+
+ifcapable vtab {
+ reset_db
+ do_execsql_test 13.10 {
+ PRAGMA foreign_keys=OFF;
+ CREATE TABLE t1(a INTEGER PRIMARY KEY, b TEXT REFERENCES t2);
+ CREATE TABLE t2(x TEXT PRIMARY KEY, y INT);
+ CREATE TABLE t3(w TEXT, z INT REFERENCES t1);
+ INSERT INTO t2 VALUES('abc',11),('def',22),('xyz',99);
+ INSERT INTO t1 VALUES(5,'abc'),(7,'xyz'),(9,'oops');
+ INSERT INTO t3 VALUES(11,7),(22,19);
+ } {}
+ do_execsql_test 13.11 {
+ SELECT x.*, '|'
+ FROM sqlite_schema, pragma_foreign_key_check(name) AS x
+ WHERE type='table'
+ ORDER BY x."table";
+ } {t1 9 t2 0 | t3 2 t1 0 |}
+ do_execsql_test 13.12 {
+ SELECT *, '|'
+ FROM pragma_foreign_key_check AS x
+ ORDER BY x."table";
+ } {t1 9 t2 0 | t3 2 t1 0 |}
+}
+
+finish_test
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