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    1: # 2010 November 30
    2: #
    3: # The author disclaims copyright to this source code.  In place of
    4: # a legal notice, here is a blessing:
    5: #
    6: #    May you do good and not evil.
    7: #    May you find forgiveness for yourself and forgive others.
    8: #    May you share freely, never taking more than you give.
    9: #
   10: #***********************************************************************
   11: #
   12: # This file implements tests to verify that the "testable statements" in 
   13: # the lang_naming.html document are correct.
   14: #
   15: 
   16: set testdir [file dirname $argv0]
   17: source $testdir/tester.tcl
   18: set ::testprefix e_resolve
   19: 
   20: # An example database schema for testing name resolution:
   21: #
   22: set schema {
   23:   ATTACH 'test.db2' AS at1;
   24:   ATTACH 'test.db3' AS at2;
   25: 
   26:   CREATE TABLE   temp.n1(x, y); INSERT INTO temp.n1 VALUES('temp', 'n1');
   27:   CREATE TRIGGER temp.n3 AFTER INSERT ON n1 BEGIN SELECT 1; END;
   28:   CREATE INDEX   temp.n4 ON n1(x, y);
   29: 
   30:   CREATE TABLE   main.n1(x, y); INSERT INTO main.n1 VALUES('main', 'n1');
   31:   CREATE TABLE   main.n2(x, y); INSERT INTO main.n2 VALUES('main', 'n2');
   32:   CREATE INDEX   main.n3 ON n2(y, x);
   33:   CREATE TRIGGER main.n4 BEFORE INSERT ON n2 BEGIN SELECT 1; END;
   34: 
   35:   CREATE TABLE   at1.n1(x, y);  INSERT INTO at1.n1 VALUES('at1', 'n1');
   36:   CREATE TABLE   at1.n2(x, y);  INSERT INTO at1.n2 VALUES('at1', 'n2');
   37:   CREATE TABLE   at1.n3(x, y);  INSERT INTO at1.n3 VALUES('at1', 'n3');
   38: 
   39:   CREATE TABLE   at2.n1(x, y);  INSERT INTO at2.n1 VALUES('at2', 'n1');
   40:   CREATE TABLE   at2.n2(x, y);  INSERT INTO at2.n2 VALUES('at2', 'n2');
   41:   CREATE TABLE   at2.n3(x, y);  INSERT INTO at2.n3 VALUES('at2', 'n3');
   42:   CREATE TABLE   at2.n4(x, y);  INSERT INTO at2.n4 VALUES('at2', 'n4');
   43:   CREATE TRIGGER at2.n4 BEFORE INSERT ON n4 BEGIN SELECT 1; END;
   44: }
   45: 
   46: proc resolve_reopen_db {} {
   47:   db close
   48:   forcedelete test.db test.db2 test.db3
   49:   sqlite3 db test.db
   50:   db eval $::schema
   51: }
   52: 
   53: 
   54: 
   55: # EVIDENCE-OF: R-33528-20612 If no database is specified as part of the
   56: # object reference, then SQLite searches the main, temp and all attached
   57: # databases for an object with a matching name. The temp database is
   58: # searched first, followed by the main database, followed all attached
   59: # databases in the order that they were attached. The reference resolves
   60: # to the first match found.
   61: #
   62: resolve_reopen_db
   63: do_execsql_test 1.1 { SELECT * FROM n1 } {temp n1}
   64: do_execsql_test 1.2 { SELECT * FROM n2 } {main n2}
   65: do_execsql_test 1.3 { SELECT * FROM n3 } {at1  n3}
   66: do_execsql_test 1.4 { SELECT * FROM n4 } {at2  n4}
   67: 
   68: # EVIDENCE-OF: R-54577-28142 If a database name is specified as part of
   69: # an object reference, it must be either "main", or "temp" or the name
   70: # of an attached database.
   71: #
   72: #   Or else it is a "no such table: xxx" error.
   73: #
   74: resolve_reopen_db
   75: do_execsql_test 2.1.1 { SELECT * FROM main.n1 } {main n1}
   76: do_execsql_test 2.1.2 { SELECT * FROM temp.n1 } {temp n1}
   77: do_execsql_test 2.1.3 { SELECT * FROM at1.n1 } {at1 n1}
   78: do_execsql_test 2.1.4 { SELECT * FROM at2.n1 } {at2 n1}
   79: 
   80: do_catchsql_test 2.2 { SELECT * FROM xxx.n1 } {1 {no such table: xxx.n1}}
   81: 
   82: # EVIDENCE-OF: R-26223-47623 Like other SQL identifiers, database names
   83: # are case-insensitive.
   84: #
   85: resolve_reopen_db
   86: do_execsql_test 3.1 { SELECT * FROM MAIN.n1 } {main n1}
   87: do_execsql_test 3.2 { SELECT * FROM tEmP.n1 } {temp n1}
   88: do_execsql_test 3.3 { SELECT * FROM aT1.n1 } {at1 n1}
   89: do_execsql_test 3.4 { SELECT * FROM At2.n1 } {at2 n1}
   90: 
   91: # EVIDENCE-OF: R-15639-28392 If a database name is specified, then only
   92: # the named database is searched for the named object.
   93: #
   94: do_catchsql_test 4.1 { SELECT * FROM temp.n2 } {1 {no such table: temp.n2}}
   95: do_catchsql_test 4.2 { SELECT * FROM main.n2 } {0 {main n2}}
   96: do_catchsql_test 4.3 { SELECT * FROM at1.n2 }  {0 {at1 n2}}
   97: do_catchsql_test 4.4 { SELECT * FROM at2.n2 }  {0 {at2 n2}}
   98: 
   99: # EVIDENCE-OF: R-08951-19801 When searching database schemas for a named
  100: # object, objects of types that cannot be used in the context of the
  101: # reference are always ignored.
  102: #
  103: #   In this case, "types that cannot be used" are triggers and indexes.
  104: #   The temp and main databases both contain triggers and indexes named
  105: #   "n3" and "n4". Database "at2" contains a trigger called "n4". And yet:
  106: #
  107: do_execsql_test 5.1 { SELECT * FROM n3 } {at1  n3}
  108: do_execsql_test 5.2 { SELECT * FROM n4 } {at2  n4}
  109: 
  110: #-------------------------------------------------------------------------
  111: # EVIDENCE-OF: R-37286-42536 
  112: #
  113: db close
  114: forcedelete test.db file.db
  115: sqlite3 db test.db
  116: do_execsql_test 6.1 {
  117:   ATTACH 'file.db' AS aux;
  118:   CREATE TABLE t1(x, y);
  119:   CREATE TEMP TABLE t1(x, y);
  120:   CREATE TABLE aux.t1(x, y);
  121: }
  122: 
  123: do_execsql_test  6.2.0 { DROP TABLE t1 }
  124: do_catchsql_test 6.2.1 { SELECT * FROM temp.t1 } {1 {no such table: temp.t1}}
  125: do_catchsql_test 6.2.2 { SELECT * FROM main.t1 } {0 {}}
  126: do_catchsql_test 6.2.3 { SELECT * FROM aux.t1  } {0 {}}
  127: 
  128: do_execsql_test  6.3.0 { DROP TABLE t1 }
  129: do_catchsql_test 6.3.1 { SELECT * FROM main.t1 } {1 {no such table: main.t1}}
  130: do_catchsql_test 6.3.3 { SELECT * FROM aux.t1  } {0 {}}
  131: 
  132: do_execsql_test  6.4.0 { DROP TABLE t1 }
  133: do_catchsql_test 6.4.1 { SELECT * FROM aux.t1 } {1 {no such table: aux.t1}}
  134: 
  135: finish_test