# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
#
# This Source Code Form is "Incompatible With Secondary Licenses", as
# defined by the Mozilla Public License, v. 2.0.

# This module tests Bugzilla/Search.pm. It uses various constants
# that are in Bugzilla::Test::Search::Constants, in xt/lib/.
#
# It does this by:
# 1) Creating a bunch of field values. Each field value is
#    randomly named and fully unique.
# 2) Creating a bunch of bugs that use those unique field
#    values. Each bug has different characteristics--see
#    the comment above the NUM_BUGS constant for a description
#    of each bug.
# 3) Running searches using the combination of every search operator against
#    every field. The tests that we run are described by the TESTS constant.
#    Some of the operator/field combinations are known to be broken--
#    these are listed in the KNOWN_BROKEN constant.
# 4) For each search, we make sure that certain bugs are contained in
#    the search, and certain other bugs are not contained in the search.
#    The code for the operator/field tests is mostly in
#    Bugzilla::Test::Search::FieldTest.
# 5) After testing each operator/field combination's functionality, we
#    do additional tests to make sure that there are no SQL injections
#    possible via any operator/field combination. The code for the
#    SQL Injection tests is in Bugzilla::Test::Search::InjectionTest.
#
# Generally, the only way that you should modify the behavior of this
# script is by modifying the constants.

package Bugzilla::Test::Search;

use strict;
use warnings;
use Bugzilla::Attachment;
use Bugzilla::Bug ();
use Bugzilla::Constants;
use Bugzilla::Field;
use Bugzilla::Field::Choice;
use Bugzilla::FlagType;
use Bugzilla::Group;
use Bugzilla::Install ();
use Bugzilla::Test::Search::Constants;
use Bugzilla::Test::Search::CustomTest;
use Bugzilla::Test::Search::FieldTestNormal;
use Bugzilla::Test::Search::OperatorTest;
use Bugzilla::User ();
use Bugzilla::Util qw(generate_random_password);

use Carp;
use DateTime;
use Scalar::Util qw(blessed);

###############
# Constructor #
###############

sub new {
  my ($class, $options) = @_;
  return bless {options => $options}, $class;
}

#############
# Accessors #
#############

sub options { return $_[0]->{options} }
sub option  { return $_[0]->{options}->{$_[1]} }

sub num_tests {
  my ($self)             = @_;
  my @top_operators      = $self->top_level_operators;
  my @all_operators      = $self->all_operators;
  my $top_operator_tests = $self->_total_operator_tests(\@top_operators);
  my $all_operator_tests = $self->_total_operator_tests(\@all_operators);

  my @fields = $self->all_fields;

  # Basically, we run TESTS_PER_RUN tests for each field/operator combination.
  my $top_combinations = $top_operator_tests * scalar(@fields);
  my $all_combinations = $all_operator_tests * scalar(@fields);

  # But we also have ORs, for which we run combinations^2 tests.
  my $join_tests
    = $self->option('long') ? ($top_combinations * $all_combinations) : 0;

  # And AND tests, which means we run 2x $join_tests;
  $join_tests = $join_tests * 2;

  # Also, because of NOT tests and Normal tests, we run 3x $top_combinations.
  my $basic_tests          = $top_combinations * 3;
  my $operator_field_tests = ($basic_tests + $join_tests) * TESTS_PER_RUN;

  # Then we test each field/operator combination for SQL injection.
  my @injection_values = INJECTION_TESTS;
  my $sql_injection_tests
    = scalar(@fields)
    * scalar(@top_operators)
    * scalar(@injection_values)
    * NUM_SEARCH_TESTS;

  # This @{ [] } thing is the only reasonable way to get a count out of a
  # constant array.
  my $special_tests
    = scalar(@{[SPECIAL_PARAM_TESTS, CUSTOM_SEARCH_TESTS]}) * TESTS_PER_RUN;

  return $operator_field_tests + $sql_injection_tests + $special_tests;
}

sub _total_operator_tests {
  my ($self, $operators) = @_;

  # Some operators have more than one test. Find those ones and add
  # them to the total operator tests
  my $extra_operator_tests;
  foreach my $operator (@$operators) {
    my $tests = TESTS->{$operator};
    next if !$tests;
    my $extra_num = scalar(@$tests) - 1;
    $extra_operator_tests += $extra_num;
  }
  return scalar(@$operators) + $extra_operator_tests;

}

sub all_operators {
  my ($self) = @_;
  if (not $self->{all_operators}) {

    my @operators;
    if (my $limit_operators = $self->option('operators')) {
      @operators = split(',', $limit_operators);
    }
    else {
      @operators = sort (keys %{Bugzilla::Search::OPERATORS()});
    }

    # "substr" is just a backwards-compatibility operator, same as "substring".
    @operators = grep { $_ ne 'substr' } @operators;
    $self->{all_operators} = \@operators;
  }
  return @{$self->{all_operators}};
}

sub all_fields {
  my $self = shift;
  if (not $self->{all_fields}) {
    $self->_create_custom_fields();
    my @fields = @{Bugzilla->fields};
    @fields = sort { $a->name cmp $b->name } @fields;
    $self->{all_fields} = \@fields;
  }
  return @{$self->{all_fields}};
}

sub top_level_operators {
  my ($self) = @_;
  if (!$self->{top_level_operators}) {
    my @operators;
    my $limit_top = $self->option('top-operators');
    if ($limit_top) {
      @operators = split(',', $limit_top);
    }
    else {
      @operators = $self->all_operators;
    }
    $self->{top_level_operators} = \@operators;
  }
  return @{$self->{top_level_operators}};
}

sub text_fields {
  my ($self) = @_;
  my @text_fields
    = grep { $_->type == FIELD_TYPE_TEXTAREA or $_->type == FIELD_TYPE_FREETEXT }
    $self->all_fields;
  @text_fields = map { $_->name } @text_fields;
  push(@text_fields, qw(short_desc status_whiteboard bug_file_loc see_also));
  return @text_fields;
}

sub bugs {
  my $self = shift;
  $self->{bugs} ||= [map { $self->_create_one_bug($_) } (1 .. NUM_BUGS)];
  return @{$self->{bugs}};
}

# Get a numbered bug.
sub bug {
  my ($self, $number) = @_;
  return ($self->bugs)[$number - 1];
}

sub admin {
  my $self = shift;
  if (!$self->{admin_user}) {
    my $admin = create_user("admin");
    Bugzilla::Install::make_admin($admin);
    $self->{admin_user} = $admin;
  }

  # We send back a fresh object every time, to make sure that group
  # memberships are always up-to-date.
  return new Bugzilla::User($self->{admin_user}->id);
}

sub nobody {
  my $self = shift;
  $self->{nobody}
    ||= Bugzilla::Group->create({
    name => "nobody-" . random(), description => "Nobody", isbuggroup => 1
    });
  return $self->{nobody};
}

sub everybody {
  my ($self) = @_;
  $self->{everybody} ||= create_group('To The Limit');
  return $self->{everybody};
}

sub bug_create_value {
  my ($self, $number, $field) = @_;
  $field = $field->name if blessed($field);
  if ($number == 6 and $field ne 'alias') {
    $number = 1;
  }
  my $extra_values = $self->_extra_bug_create_values->{$number};
  if (exists $extra_values->{$field}) {
    return $extra_values->{$field};
  }
  return $self->_bug_create_values->{$number}->{$field};
}

sub bug_update_value {
  my ($self, $number, $field) = @_;
  $field = $field->name if blessed($field);
  if ($number == 6 and $field ne 'alias') {
    $number = 1;
  }
  return $self->_bug_update_values->{$number}->{$field};
}

# Values used to create the bugs.
sub _bug_create_values {
  my $self = shift;
  return $self->{bug_create_values} if $self->{bug_create_values};
  my %values;
  foreach my $number (1 .. NUM_BUGS) {
    $values{$number} = $self->_create_field_values($number, 'for create');
  }
  $self->{bug_create_values} = \%values;
  return $self->{bug_create_values};
}

# Values as they existed on the bug, at creation time. Used by the
# changedfrom tests.
sub _extra_bug_create_values {
  my $self = shift;
  $self->{extra_bug_create_values} ||= {map { $_ => {} } (1 .. NUM_BUGS)};
  return $self->{extra_bug_create_values};
}

# Values used to update the bugs after they are created.
sub _bug_update_values {
  my $self = shift;
  return $self->{bug_update_values} if $self->{bug_update_values};
  my %values;
  foreach my $number (1 .. NUM_BUGS) {
    $values{$number} = $self->_create_field_values($number);
  }
  $self->{bug_update_values} = \%values;
  return $self->{bug_update_values};
}

##############################
# General Helper Subroutines #
##############################

sub random {
  $_[0] ||= FIELD_SIZE;
  generate_random_password(@_);
}

# We need to use a custom timestamp for each create() and update(),
# because the database returns the same value for LOCALTIMESTAMP(0)
# for the entire transaction, and we need each created bug to have
# its own creation_ts and delta_ts.
sub timestamp {
  my ($day, $second) = @_;
  return DateTime->new(
    year   => 2037,
    month  => 1,
    day    => $day,
    hour   => 12,
    minute => $second,
    second => 0,

    # We make it floating because the timezone doesn't matter for our uses,
    # and we want totally consistent behavior across all possible machines.
    time_zone => 'floating',
  );
}

sub create_keyword {
  my ($number) = @_;
  return Bugzilla::Keyword->create({
    name => "$number-keyword-" . random(), description => "Keyword $number"
  });
}

sub create_user {
  my ($prefix) = @_;
  my $user_name = $prefix . '-' . random(15) . "@" . random(12) . "." . random(3);
  my $user_realname = $prefix . '-' . random();
  my $user
    = Bugzilla::User->create({
    login_name => $user_name, realname => $user_realname, cryptpassword => '*',
    });
  return $user;
}

sub create_group {
  my ($prefix) = @_;
  return Bugzilla::Group->create({
    name        => "$prefix-group-" . random(),
    description => "Everybody $prefix",
    userregexp  => '.*',
    isbuggroup  => 1
  });
}

sub create_legal_value {
  my ($field, $number) = @_;
  my $type       = Bugzilla::Field::Choice->type($field);
  my $field_name = $field->name;
  return $type->create({value => "$number-$field_name-" . random(), is_open => 0
  });
}

#########################
# Custom Field Creation #
#########################

sub _create_custom_fields {
  my ($self) = @_;
  return if !$self->option('add-custom-fields');

  while (my ($type, $name) = each %{CUSTOM_FIELDS()}) {
    my $exists = new Bugzilla::Field({name => $name});
    next if $exists;
    Bugzilla::Field->create({
      name         => $name,
      type         => $type,
      description  => "Search Test Field $name",
      enter_bug    => 1,
      custom       => 1,
      buglist      => 1,
      is_mandatory => 0,
    });
  }
}

########################
# Field Value Creation #
########################

sub _create_field_values {
  my ($self, $number, $for_create) = @_;
  my $dbh = Bugzilla->dbh;

  Bugzilla->set_user($self->admin);

  my @selects = grep { $_->is_select } $self->all_fields;
  my %values;
  foreach my $field (@selects) {
    next if $field->is_abnormal;
    $values{$field->name} = create_legal_value($field, $number)->name;
  }

  my $group = create_group($number);
  $values{groups} = [$group->name];

  $values{'keywords'} = create_keyword($number)->name;

  foreach my $field (qw(assigned_to qa_contact reporter cc)) {
    $values{$field} = create_user("$number-$field")->login;
  }

  my $classification = Bugzilla::Classification->create(
    {name => "$number-classification-" . random()});
  $classification = $classification->name;

  my $version   = "$number-version-" . random();
  my $milestone = "$number-tm-" . random(15);
  my $product   = Bugzilla::Product->create({
    name               => "$number-product-" . random(),
    description        => 'Created by t/search.t',
    defaultmilestone   => $milestone,
    classification     => $classification,
    version            => $version,
    allows_unconfirmed => 1,
  });
  foreach my $item ($group, $self->nobody) {
    $product->set_group_controls($item,
      {membercontrol => CONTROLMAPSHOWN, othercontrol => CONTROLMAPNA});
  }

  # $product->update() is called lower down.
  my $component = Bugzilla::Component->create({
    product          => $product,
    name             => "$number-component-" . random(),
    initialowner     => create_user("$number-defaultowner")->login,
    initialqacontact => create_user("$number-defaultqa")->login,
    initial_cc       => [create_user("$number-initcc")->login],
    description      => "Component $number"
  });

  $values{'product'}          = $product->name;
  $values{'component'}        = $component->name;
  $values{'target_milestone'} = $milestone;
  $values{'version'}          = $version;

  foreach my $field ($self->text_fields) {

    # We don't add a - after $field for the text fields, because
    # if we do, fulltext searching for short_desc pulls out
    # "short_desc" as a word and matches it in every bug.
    my $value = "$number-$field" . random();
    if ($field eq 'bug_file_loc' or $field eq 'see_also') {
      $value = "http://$value-" . random(3) . "/show_bug.cgi?id=$number";
    }
    $values{$field} = $value;
  }
  $values{'tag'} = ["$number-tag-" . random()];

  my @date_fields = grep { $_->type == FIELD_TYPE_DATETIME } $self->all_fields;
  foreach my $field (@date_fields) {

    # We use 03 as the month because that differs from our creation_ts,
    # delta_ts, and deadline. (It's nice to have recognizable values
    # for each field when debugging.)
    my $second = $for_create ? $number : $number + 1;
    $values{$field->name} = "2037-03-0$number 12:34:0$second";
  }

  $values{alias} = "$number-alias-" . random(12);

  # Prefixing the original comment with "description" makes the
  # lesserthan and greaterthan tests behave predictably.
  my $comm_prefix = $for_create ? "description-" : '';
  $values{comment} = "$comm_prefix$number-comment-" . random() . ' ' . random();

  my @flags;
  my $setter    = create_user("$number-setters.login_name");
  my $requestee = create_user("$number-requestees.login_name");
  $values{set_flags} = _create_flags($number, $setter, $requestee);

  my $month = $for_create ? "12" : "02";
  $values{'deadline'} = "2037-$month-0$number";
  my $estimate_times = $for_create ? 10 : 1;
  $values{estimated_time} = $estimate_times * $number;

  $values{attachment} = _get_attach_values($number, $for_create);

  # Some things only happen on the first bug.
  if ($number == 1) {

    # We use 6 as the prefix for the extra values, because bug 6's values
    # don't otherwise get used (since bug 6 is created as a clone of
    # bug 1). This also makes sure that our greaterthan/lessthan
    # tests work properly.
    my $extra_group = create_group(6);
    $product->set_group_controls($extra_group,
      {membercontrol => CONTROLMAPSHOWN, othercontrol => CONTROLMAPNA});
    $values{groups} = [$values{groups}->[0], $extra_group->name];
    my $extra_keyword = create_keyword(6);
    $values{keywords} = [$values{keywords}, $extra_keyword->name];
    my $extra_cc = create_user("6-cc");
    $values{cc} = [$values{cc}, $extra_cc->login];
    my @multi_selects
      = grep { $_->type == FIELD_TYPE_MULTI_SELECT } $self->all_fields;

    foreach my $field (@multi_selects) {
      my $new_value = create_legal_value($field, 6);
      my $name      = $field->name;
      $values{$name} = [$values{$name}, $new_value->name];
    }
    push(@{$values{'tag'}}, "6-tag-" . random());
  }

  # On bug 5, any field that *can* be left empty, *is* left empty.
  if ($number == 5) {
    my @set_fields
      = grep { $_->type == FIELD_TYPE_SINGLE_SELECT } $self->all_fields;
    @set_fields = map { $_->name } @set_fields;
    push(@set_fields, qw(short_desc version reporter));
    foreach my $key (keys %values) {
      delete $values{$key} unless grep { $_ eq $key } @set_fields;
    }
  }

  $product->update();

  return \%values;
}

# Flags
sub _create_flags {
  my ($number, $setter, $requestee) = @_;

  my $flagtypes = _create_flagtypes($number);

  my %flags;
  foreach my $type (qw(a b)) {
    $flags{$type} = _get_flag_values(@_, $flagtypes->{$type});
  }
  return \%flags;
}

sub _create_flagtypes {
  my ($number) = @_;
  my $dbh      = Bugzilla->dbh;
  my $name     = "$number-flag-" . random();
  my $desc     = "FlagType $number";

  my %flagtypes;
  foreach my $target (qw(a b)) {
    $dbh->do(
      "INSERT INTO flagtypes
                  (name, description, target_type, is_requestable, 
                   is_requesteeble, is_multiplicable, cc_list)
                   VALUES (?,?,?,1,1,1,'')", undef, $name, $desc, $target
    );
    my $id = $dbh->bz_last_key('flagtypes', 'id');
    $dbh->do('INSERT INTO flaginclusions (type_id) VALUES (?)', undef, $id);
    my $flagtype = new Bugzilla::FlagType($id);
    $flagtypes{$target} = $flagtype;
  }
  return \%flagtypes;
}

sub _get_flag_values {
  my ($number, $setter, $requestee, $flagtype) = @_;

  my @set_flags;
  if ($number <= 2) {
    foreach my $value (qw(? - + ?)) {
      my $flag = {
        type_id  => $flagtype->id,
        status   => $value,
        setter   => $setter,
        flagtype => $flagtype
      };
      push(@set_flags, $flag);
    }
    $set_flags[0]->{requestee} = $requestee->login;
  }
  else {
    @set_flags = ({
      type_id  => $flagtype->id,
      status   => '+',
      setter   => $setter,
      flagtype => $flagtype
    });
  }
  return \@set_flags;
}

# Attachments
sub _get_attach_values {
  my ($number, $for_create) = @_;

  my $boolean = $number == 1 ? 1 : 0;
  if ($for_create) {
    $boolean = !$boolean ? 1 : 0;
  }
  my $ispatch    = $for_create ? 'ispatch'    : 'is_patch';
  my $isobsolete = $for_create ? 'isobsolete' : 'is_obsolete';
  my $isprivate  = $for_create ? 'isprivate'  : 'is_private';
  my $mimetype   = $for_create ? 'mimetype'   : 'content_type';

  my %values = (
    description => "$number-attach_desc-" . random(),
    filename    => "$number-filename-" . random(),
    $ispatch    => $boolean,
    $isobsolete => $boolean,
    $isprivate  => $boolean,
    $mimetype   => "text/x-$number-" . random(),
  );
  if ($for_create) {
    $values{data} = "$number-data-" . random() . random();
  }
  return \%values;
}

################
# Bug Creation #
################

sub _create_one_bug {
  my ($self, $number) = @_;
  my $dbh = Bugzilla->dbh;

  # We need bug 6 to have a unique alias that is not a clone of bug 1's,
  # so we get the alias separately from the other parameters.
  my $alias        = $self->bug_create_value($number, 'alias');
  my $update_alias = $self->bug_update_value($number, 'alias');

  # Otherwise, make bug 6 a clone of bug 1.
  my $real_number = $number;
  $number = 1 if $number == 6;

  my $reporter = $self->bug_create_value($number, 'reporter');
  Bugzilla->set_user(Bugzilla::User->check($reporter));

  # We create the bug with one set of values, and then we change it
  # to have different values.
  my %params = %{$self->_bug_create_values->{$number}};
  $params{alias} = $alias;

  # There are some things in bug_create_values that shouldn't go into
  # create().
  delete @params{qw(attachment set_flags tag)};

  my ($status, $resolution, $see_also)
    = delete @params{qw(bug_status resolution see_also)};

  # All the bugs are created with everconfirmed = 0.
  $params{bug_status} = 'UNCONFIRMED';
  my $bug = Bugzilla::Bug->create(\%params);

  # These are necessary for the changedfrom tests.
  my $extra_values = $self->_extra_bug_create_values->{$number};
  foreach my $field (qw(comments remaining_time percentage_complete
    keyword_objects everconfirmed dependson blocked
  groups_in classification actual_time))
  {
    $extra_values->{$field} = $bug->$field;
  }
  $extra_values->{reporter_accessible} = $number == 1 ? 0 : 1;
  $extra_values->{cclist_accessible}   = $number == 1 ? 0 : 1;

  if ($number == 5) {

    # Bypass Bugzilla::Bug--we don't want any changes in bugs_activity
    # for bug 5.
    $dbh->do(
      'UPDATE bugs SET qa_contact = NULL, reporter_accessible = 0,
                                  cclist_accessible = 0 WHERE bug_id = ?', undef,
      $bug->id
    );
    $dbh->do('DELETE FROM cc WHERE bug_id = ?', undef, $bug->id);
    my $ts = '1970-01-01 00:00:00';
    $dbh->do(
      'UPDATE bugs SET creation_ts = ?, delta_ts = ?
                   WHERE bug_id = ?', undef, $ts, $ts, $bug->id
    );
    $dbh->do('UPDATE longdescs SET bug_when = ? WHERE bug_id = ?',
      undef, $ts, $bug->id);
    $bug->{creation_ts}       = $ts;
    $extra_values->{see_also} = [];
  }
  else {
    # Manually set the creation_ts so that each bug has a different one.
    #
    # Also, manually update the resolution and bug_status, because
    # we want to see both of them change in bugs_activity, so we
    # have to start with values for both (and as of the time when I'm
    # writing this test, Bug->create doesn't support setting resolution).
    #
    # Same for see_also.
    my $timestamp   = timestamp($number, $number - 1);
    my $creation_ts = $timestamp->ymd . ' ' . $timestamp->hms;
    $bug->{creation_ts} = $creation_ts;
    $dbh->do('UPDATE longdescs SET bug_when = ? WHERE bug_id = ?',
      undef, $creation_ts, $bug->id);
    $dbh->do(
      'UPDATE bugs SET creation_ts = ?, bug_status = ?,
                  resolution = ? WHERE bug_id = ?', undef, $creation_ts, $status,
      $resolution, $bug->id
    );
    $dbh->do('INSERT INTO bug_see_also (bug_id, value, class) VALUES (?,?,?)',
      undef, $bug->id, $see_also, 'Bugzilla::BugUrl::Bugzilla');
    $extra_values->{see_also} = $bug->see_also;

    # All the tags must be created as the admin user, so that the
    # admin user can find them, later.
    my $original_user = Bugzilla->user;
    Bugzilla->set_user($self->admin);
    my $tags = $self->bug_create_value($number, 'tag');
    $bug->add_tag($_) foreach @$tags;
    $extra_values->{tags} = $tags;
    Bugzilla->set_user($original_user);

    if ($number == 1) {

      # Bug 1 needs to start off with reporter_accessible and
      # cclist_accessible being 0, so that when we change them to 1,
      # that change shows up in bugs_activity.
      $dbh->do(
        'UPDATE bugs SET reporter_accessible = 0,
                      cclist_accessible = 0 WHERE bug_id = ?', undef, $bug->id
      );

      # Bug 1 gets three comments, so that longdescs.count matches it
      # uniquely. The third comment is added in the middle, so that the
      # last comment contains all of the important data, like work_time.
      $bug->add_comment("1-comment-" . random(100));
    }

    my %update_params = %{$self->_bug_update_values->{$number}};
    my %reverse_map   = reverse %{Bugzilla::Bug->FIELD_MAP};
    foreach my $db_name (keys %reverse_map) {
      next if $db_name eq 'comment';
      next if $db_name eq 'status_whiteboard';
      if (exists $update_params{$db_name}) {
        my $update_name = $reverse_map{$db_name};
        $update_params{$update_name} = delete $update_params{$db_name};
      }
    }

    my ($new_status, $new_res) = delete @update_params{qw(status resolution)};

    # Bypass the status workflow.
    $bug->{bug_status}    = $new_status;
    $bug->{resolution}    = $new_res;
    $bug->{everconfirmed} = 1 if $number == 1;

    # add/remove/set fields.
    $update_params{keywords} = {set => $update_params{keywords}};
    $update_params{groups}
      = {add => $update_params{groups}, remove => $bug->groups_in};
    my @cc_remove = map { $_->login } @{$bug->cc_users};
    my $cc_new    = $update_params{cc};
    my @cc_add    = ref($cc_new) ? @$cc_new : ($cc_new);

    # We make the admin an explicit CC on bug 1 (but not on bug 6), so
    # that we can test the %user% pronoun properly.
    if ($real_number == 1) {
      push(@cc_add, $self->admin->login);
    }
    $update_params{cc} = {add => \@cc_add, remove => \@cc_remove};
    my $see_also_remove = $bug->see_also;
    my $see_also_add    = [$update_params{see_also}];
    $update_params{see_also} = {add  => $see_also_add, remove => $see_also_remove};
    $update_params{comment}  = {body => $update_params{comment}};
    $update_params{work_time} = $number;

    # Setting work_time kills the remaining_time, so we need to
    # preserve that. We add 8 because that produces an integer
    # percentage_complete for bug 1, which is necessary for
    # accurate "equals"-type searching.
    $update_params{remaining_time}      = $number + 8;
    $update_params{reporter_accessible} = $number == 1 ? 1 : 0;
    $update_params{cclist_accessible}   = $number == 1 ? 1 : 0;
    $update_params{alias}               = $update_alias;

    $bug->set_all(\%update_params);
    my $flags = $self->bug_create_value($number, 'set_flags')->{b};
    $bug->set_flags([], $flags);
    $timestamp->set(second => $number);
    $bug->update($timestamp->ymd . ' ' . $timestamp->hms);
    $extra_values->{flags} = $bug->flags;

    # It's not generally safe to do update() multiple times on
    # the same Bug object.
    $bug = new Bugzilla::Bug($bug->id);
    my $update_flags = $self->bug_update_value($number, 'set_flags')->{b};
    $_->{status} = 'X' foreach @{$bug->flags};
    $bug->set_flags($bug->flags, $update_flags);
    if ($number == 1) {
      my $comment_id = $bug->comments->[-1]->id;
      $bug->set_comment_is_private({$comment_id => 1});
    }
    $bug->update($bug->delta_ts);

    my $attach_create = $self->bug_create_value($number, 'attachment');
    my $attachment
      = Bugzilla::Attachment->create({
      bug => $bug, creation_ts => $creation_ts, %$attach_create
      });

    # Store for the changedfrom tests.
    $extra_values->{attachments} = [new Bugzilla::Attachment($attachment->id)];

    my $attach_update = $self->bug_update_value($number, 'attachment');
    $attachment->set_all($attach_update);

    # In order to keep the mimetype on the ispatch attachment,
    # we need to bypass the validator.
    $attachment->{mimetype} = $attach_update->{content_type};
    my $attach_flags = $self->bug_update_value($number, 'set_flags')->{a};
    $attachment->set_flags([], $attach_flags);
    $attachment->update($bug->delta_ts);
  }

  # Values for changedfrom.
  $extra_values->{creation_ts} = $bug->creation_ts;
  $extra_values->{delta_ts}    = $bug->creation_ts;

  return new Bugzilla::Bug($bug->id);
}

###################################
# Test::Builder Memory Efficiency #
###################################

# Test::Builder stores information for each test run, but Test::Harness
# and TAP::Harness don't actually need this information. When we run 60
# million tests, the history eats up all our memory. (After about
# 1 million tests, memory usage is around 1 GB.)
#
# The only part of the history that Test::More actually *uses* is the "ok"
# field, which we store more efficiently, in an array, and then we re-populate
# the Test_Results in Test::Builder at the end of the test.
sub clean_test_history {
  my ($self) = @_;
  return if !$self->option('long');
  my $builder      = Test::More->builder;
  my $current_test = $builder->current_test;

  # I don't use details() because I don't want to copy the array.
  my $results    = $builder->{Test_Results};
  my $check_test = $current_test - 1;
  while (my $result = $results->[$check_test]) {
    last if !$result;
    $self->test_success($check_test, $result->{ok});
    $check_test--;
  }

  # Truncate the test history array, but retain the current test number.
  $builder->{Test_Results} = [];
  $builder->{Curr_Test}    = $current_test;
}

sub test_success {
  my ($self, $index, $status) = @_;
  $self->{test_success}->[$index] = $status;
  return $self->{test_success};
}

sub repopulate_test_results {
  my ($self) = @_;
  return if !$self->option('long');
  $self->clean_test_history();

  # We create only two hashes, for memory efficiency.
  my %ok     = (ok => 1);
  my %not_ok = (ok => 0);
  my @results;
  foreach my $success (@{$self->{test_success}}) {
    push(@results, $success ? \%ok : \%not_ok);
  }
  my $builder = Test::More->builder;
  $builder->{Test_Results} = \@results;
}

##########
# Caches #
##########

# When doing AND and OR tests, we essentially test the same field/operator
# combinations over and over. So, if we're going to be running those tests,
# we cache the translated_value of the FieldTests globally so that we don't
# have to re-run the value-translation code every time (which can be pretty
# slow).
sub value_translation_cache {
  my ($self, $field_test, $value) = @_;
  return if !$self->option('long');
  my $test_name = $field_test->name;
  if (@_ == 3) {
    $self->{value_translation_cache}->{$test_name} = $value;
  }
  return $self->{value_translation_cache}->{$test_name};
}

# When doing AND/OR tests, the value for transformed_value_was_equal
# (see Bugzilla::Test::Search::FieldTest) won't be recalculated
# if we pull our values from the value_translation_cache. So we need
# to also cache the values for transformed_value_was_equal.
sub was_equal_cache {
  my ($self, $field_test, $number, $value) = @_;
  return if !$self->option('long');
  my $test_name = $field_test->name;
  if (@_ == 4) {
    $self->{tvwe_cache}->{$test_name}->{$number} = $value;
  }
  return $self->{tvwe_cache}->{$test_name}->{$number};
}

#############
# Main Test #
#############

sub run {
  my ($self) = @_;
  my $dbh = Bugzilla->dbh;

  # We want backtraces on any "die" message or any warning.
  # Otherwise it's hard to trace errors inside of Bugzilla::Search from
  # reading automated test run results.
  local $SIG{__WARN__} = \&Carp::cluck;
  local $SIG{__DIE__}  = \&Carp::confess;

  $dbh->bz_start_transaction();

  # Some parameters need to be set in order for the tests to function
  # properly.
  my $everybody = $self->everybody;
  my $params    = Bugzilla->params;
  local $params->{'useclassification'}    = 1;
  local $params->{'useqacontact'}         = 1;
  local $params->{'usetargetmilestone'}   = 1;
  local $params->{'mail_delivery_method'} = 'None';
  local $params->{'timetrackinggroup'}    = $everybody->name;
  local $params->{'insidergroup'}         = $everybody->name;

  $self->_setup_bugs();

  # Even though _setup_bugs set us as an admin, we want to be sure at
  # this point that we have an admin with refreshed group memberships.
  Bugzilla->set_user($self->admin);
  foreach my $test (CUSTOM_SEARCH_TESTS) {
    my $custom_test = new Bugzilla::Test::Search::CustomTest($test, $self);
    $custom_test->run();
  }
  foreach my $test (SPECIAL_PARAM_TESTS) {
    my $operator_test
      = new Bugzilla::Test::Search::OperatorTest($test->{operator}, $self);
    my $field = Bugzilla::Field->check($test->{field});
    my $special_test
      = new Bugzilla::Test::Search::FieldTestNormal($operator_test, $field, $test);
    $special_test->run();
  }
  foreach my $operator ($self->top_level_operators) {
    my $operator_test = new Bugzilla::Test::Search::OperatorTest($operator, $self);
    $operator_test->run();
  }

  # Rollbacks won't get rid of bugs_fulltext entries, so we do that ourselves.
  my @bug_ids       = map { $_->id } $self->bugs;
  my $bug_id_string = join(',', @bug_ids);
  $dbh->do("DELETE FROM bugs_fulltext WHERE bug_id IN ($bug_id_string)");
  $dbh->bz_rollback_transaction();
  $self->repopulate_test_results();
}

# This makes a few changes to the bugs after they're created--changes
# that can only be done after all the bugs have been created.
sub _setup_bugs {
  my ($self) = @_;
  $self->_setup_dependencies();
  $self->_set_bug_id_fields();
  $self->_protect_bug_6();
}

sub _setup_dependencies {
  my ($self) = @_;
  my $dbh = Bugzilla->dbh;

  # Set up depedency relationships between the bugs.
  # Bug 1 + 6 depend on bug 2 and block bug 3.
  my $bug2 = $self->bug(2);
  my $bug3 = $self->bug(3);
  foreach my $number (1, 6) {
    my $bug            = $self->bug($number);
    my @original_delta = ($bug2->delta_ts, $bug3->delta_ts);
    Bugzilla->set_user($bug->reporter);
    $bug->set_dependencies([$bug2->id], [$bug3->id]);
    $bug->update($bug->delta_ts);

    # Setting dependencies changed the delta_ts on bug2 and bug3, so
    # re-set them back to what they were before. However, we leave
    # the correct update times in bugs_activity, so that the changed*
    # searches still work right.
    my $set_delta = $dbh->prepare('UPDATE bugs SET delta_ts = ? WHERE bug_id = ?');
    foreach
      my $row ([$original_delta[0], $bug2->id], [$original_delta[1], $bug3->id])
    {
      $set_delta->execute(@$row);
    }
  }
}

sub _set_bug_id_fields {
  my ($self) = @_;

  # BUG_ID fields couldn't be set before, because before we create bug 1,
  # we don't necessarily have any valid bug ids.)
  my @bug_id_fields = grep { $_->type == FIELD_TYPE_BUG_ID } $self->all_fields;
  foreach my $number (1 .. NUM_BUGS) {
    my $bug = $self->bug($number);
    $number = 1 if $number == 6;
    next if $number == 5;
    my $other_bug = $self->bug($number + 1);
    Bugzilla->set_user($bug->reporter);
    foreach my $field (@bug_id_fields) {
      $bug->set_custom_field($field, $other_bug->id);
      $bug->update($bug->delta_ts);
    }
  }
}

sub _protect_bug_6 {
  my ($self) = @_;
  my $dbh = Bugzilla->dbh;

  Bugzilla->set_user($self->admin);

  # Put bug6 in the nobody group.
  my $nobody = $self->nobody;

  # We pull it newly from the DB to be sure it's safe to call update()
  # on.
  my $bug6 = new Bugzilla::Bug($self->bug(6)->id);
  $bug6->add_group($nobody);
  $bug6->update($bug6->delta_ts);

  # Remove the admin (and everybody else) from the $nobody group.
  $dbh->do(
    'DELETE FROM group_group_map 
               WHERE grantor_id = ? OR member_id = ?', undef, $nobody->id,
    $nobody->id
  );
}

1;
