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SQLite training in Houston TX on 2019-11-05 (details)
Part of the 2019 Tcl Conference

Artifact b01e3a18cdfabbff8104a96a5242a06a68a998a0:


# 2014 June 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.
#
#*************************************************************************
#
# Test the fts5 expression parser directly using the fts5_expr() SQL
# test function.
#

source [file join [file dirname [info script]] fts5_common.tcl]
set testprefix fts5ea

# If SQLITE_ENABLE_FTS5 is defined, omit this file.
ifcapable !fts5 {
  finish_test
  return
}

proc do_syntax_error_test {tn expr err} {
  set ::se_expr $expr
  do_catchsql_test $tn {SELECT fts5_expr($se_expr)} [list 1 $err]
}

proc do_syntax_test {tn expr res} {
  set ::se_expr $expr
  do_execsql_test $tn {SELECT fts5_expr($se_expr)} [list $res]
}

foreach {tn expr res} {
  1  {abc}                           {"abc"}
  2  {abc def}                       {"abc" AND "def"}
  3  {abc*}                          {"abc" *}
  4  {"abc def ghi" *}               {"abc" + "def" + "ghi" *}
  5  {one AND two}                   {"one" AND "two"}
  6  {one+two}                       {"one" + "two"}
  7  {one AND two OR three}          {("one" AND "two") OR "three"}
  8  {one OR two AND three}          {"one" OR ("two" AND "three")}
  9  {NEAR(one two)}                 {NEAR("one" "two", 10)}
  10 {NEAR("one three"* two, 5)}     {NEAR("one" + "three" * "two", 5)}
  11 {a OR b NOT c}                  {"a" OR ("b" NOT "c")}
  12 "\x20one\x20two\x20three"       {"one" AND "two" AND "three"}
  13 "\x09one\x0Atwo\x0Dthree"       {"one" AND "two" AND "three"}
  14 {"abc""def"}                    {"abc" + "def"}
} {
  do_execsql_test 1.$tn {SELECT fts5_expr($expr)} [list $res]
}

foreach {tn expr res} {
  1 {c1:abc}                           
    {c1 : "abc"}
  2 {c2 : NEAR(one two) c1:"hello world"} 
    {c2 : NEAR("one" "two", 10) AND c1 : "hello" + "world"}
} {
  do_execsql_test 2.$tn {SELECT fts5_expr($expr, 'c1', 'c2')} [list $res]
}

foreach {tn expr err} {
  1 {AND}                          {fts5: syntax error near "AND"}
  2 {abc def AND}                  {fts5: syntax error near ""}
  3 {abc OR AND}                   {fts5: syntax error near "AND"}
  4 {(a OR b) abc}                 {fts5: syntax error near "abc"}
  5 {NEaR (a b)}                   {fts5: syntax error near "NEaR"}
  6 {NEa (a b)}                    {fts5: syntax error near "NEa"}
  7 {(a OR b) NOT c)}              {fts5: syntax error near ")"}
  8 {nosuch: a nosuch2: b}         {no such column: nosuch}
  9 {addr: a nosuch2: b}           {no such column: nosuch2}
  10 {NOT}                          {fts5: syntax error near "NOT"}
  11 {a AND "abc}                  {unterminated string}

  12 {NEAR(a b, xyz)}              {expected integer, got "xyz"}
  13 {NEAR(a b, // )}              {fts5: syntax error near "/"}
  14 {NEAR(a b, "xyz" )}           {expected integer, got ""xyz""}
} {
  do_catchsql_test 3.$tn {SELECT fts5_expr($expr, 'name', 'addr')} [list 1 $err]
}

#-------------------------------------------------------------------------
# Experiment with a tokenizer that considers " to be a token character.
#
do_execsql_test 4.0 {
  SELECT fts5_expr('a AND """"', 'x', 'tokenize="unicode61 tokenchars ''""''"');
} {{"a" AND """"}}

#-------------------------------------------------------------------------
# Experiment with a tokenizer that considers " to be a token character.
#
do_catchsql_test 5.0 {
  SELECT fts5_expr('abc | def');
} {1 {fts5: syntax error near "|"}}



finish_test