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// fts_spec_test.cpp
/**
* Copyright (C) 2012 10gen Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the GNU Affero General Public License in all respects for
* all of the code used other than as permitted herein. If you modify file(s)
* with this exception, you may extend this exception to your version of the
* file(s), but you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version. If you delete this
* exception statement from all source files in the program, then also delete
* it in the license file.
*/
#include "mongo/platform/basic.h"
#include "mongo/db/fts/fts_spec.h"
#include "mongo/db/json.h"
#include "mongo/unittest/unittest.h"
namespace mongo {
using std::set;
using std::string;
using unittest::assertGet;
namespace fts {
/**
* Assert that fixSpec() accepts the provided text index spec.
*/
void assertFixSuccess(const std::string& s) {
BSONObj user = fromjson(s);
try {
// fixSpec() should not throw on a valid spec.
BSONObj fixed = assertGet(FTSSpec::fixSpec(user));
// fixSpec() on an already-fixed spec shouldn't change it.
BSONObj fixed2 = assertGet(FTSSpec::fixSpec(fixed));
ASSERT_EQUALS(fixed, fixed2);
} catch (UserException&) {
ASSERT(false);
}
}
/**
* Assert that fixSpec() rejects the provided text index spec.
*/
void assertFixFailure(const std::string& s) {
BSONObj user = fromjson(s);
ASSERT_NOT_OK(FTSSpec::fixSpec(user));
}
TEST(FTSSpec, FixNormalKey1) {
assertFixSuccess("{key: {a: 'text'}}");
assertFixSuccess("{key: {a: 'text', b: 'text'}}");
assertFixSuccess("{key: {a: 'text', b: 'text', c: 'text'}}");
assertFixFailure("{key: {_fts: 'text'}}"); // not allowed to index reserved field
assertFixFailure("{key: {_ftsx: 'text'}}");
}
TEST(FTSSpec, FixCompoundKey1) {
assertFixSuccess("{key: {a: 'text', b: 1.0}}");
assertFixSuccess("{key: {a: 'text', b: NumberInt(1)}}");
assertFixSuccess("{key: {a: 'text', b: NumberLong(1)}}");
assertFixSuccess("{key: {a: 'text', b: -1.0}}");
assertFixSuccess("{key: {a: 'text', b: NumberInt(-1)}}");
assertFixSuccess("{key: {a: 'text', b: NumberLong(-1)}}");
assertFixSuccess("{key: {a: 1.0, b: 'text'}}");
assertFixSuccess("{key: {a: NumberInt(1), b: 'text'}}");
assertFixSuccess("{key: {a: NumberLong(1), b: 'text'}}");
assertFixSuccess("{key: {a: -1, b: 'text'}}");
assertFixSuccess("{key: {a: 1, b: 1, c: 'text'}}");
assertFixSuccess("{key: {a: 1, b: -1, c: 'text'}}");
assertFixSuccess("{key: {a: -1, b: 1, c: 'text'}}");
assertFixSuccess("{key: {a: 1, b: 'text', c: 1}}");
assertFixSuccess("{key: {a: 'text', b: 1, c: 1}}");
assertFixSuccess("{key: {a: 'text', b: 1, c: -1}}");
assertFixSuccess("{key: {a: 'text', b: 'text', c: 1}}");
assertFixSuccess("{key: {a: 1, b: 'text', c: 'text'}}");
assertFixFailure("{key: {a: 'text', b: 0}}");
assertFixFailure("{key: {a: 'text', b: '2d'}}"); // not allowed to mix special indexes
assertFixFailure("{key: {a: 'text', b: '1'}}");
assertFixFailure("{key: {a: 'text', _fts: 1}}");
assertFixFailure("{key: {a: 'text', _fts: 'text'}}");
assertFixFailure("{key: {a: 'text', _ftsx: 1}}");
assertFixFailure("{key: {a: 'text', _ftsx: 'text'}}");
assertFixFailure("{key: {_fts: 1, a: 'text'}}");
assertFixFailure("{key: {_fts: 'text', a: 'text'}}");
assertFixFailure("{key: {_ftsx: 1, a: 'text'}}");
assertFixFailure("{key: {_ftsx: 'text', a: 'text'}}");
assertFixFailure("{key: {a: 'text', b: 1, c: 'text'}}"); // 'text' must all be adjacent
assertFixFailure("{key: {a: 'text', b: 1, c: 'text', d: 1}}");
assertFixFailure("{key: {a: 1, b: 'text', c: 1, d: 'text', e: 1}}");
}
TEST(FTSSpec, FixDefaultLanguage1) {
assertFixSuccess("{key: {a: 'text'}, default_language: 'english'}");
assertFixSuccess("{key: {a: 'text'}, default_language: 'engLISH'}");
assertFixSuccess("{key: {a: 'text'}, default_language: 'en'}");
assertFixSuccess("{key: {a: 'text'}, default_language: 'eN'}");
assertFixSuccess("{key: {a: 'text'}, default_language: 'spanish'}");
assertFixSuccess("{key: {a: 'text'}, default_language: 'none'}");
assertFixFailure("{key: {a: 'text'}, default_language: 'engrish'}");
assertFixFailure("{key: {a: 'text'}, default_language: ' english'}");
assertFixFailure("{key: {a: 'text'}, default_language: ''}");
}
TEST(FTSSpec, FixWeights1) {
assertFixSuccess("{key: {a: 'text'}, weights: {}}");
assertFixSuccess("{key: {a: 'text'}, weights: {a: 1.0}}");
assertFixSuccess("{key: {a: 'text'}, weights: {a: NumberInt(1)}}");
assertFixSuccess("{key: {a: 'text'}, weights: {a: NumberLong(1)}}");
assertFixSuccess("{key: {a: 'text'}, weights: {a: 99999}}");
assertFixSuccess("{key: {'$**': 'text'}, weights: {'a.b': 2}}");
assertFixSuccess("{key: {'$**': 'text'}, weights: {a: 2, b: 2}}");
assertFixSuccess("{key: {'$**': 'text'}, weights: {'$**': 2}}");
assertFixFailure("{key: {a: 'text'}, weights: 0}");
assertFixFailure("{key: {a: 'text'}, weights: []}");
assertFixFailure("{key: {a: 'text'}, weights: 'x'}");
assertFixFailure("{key: {a: 'text'}, weights: {a: 0}}");
assertFixFailure("{key: {a: 'text'}, weights: {a: -1}}");
assertFixFailure("{key: {a: 'text'}, weights: {a: 100000}}"); // above max weight
assertFixFailure("{key: {a: 'text'}, weights: {a: '1'}}");
assertFixFailure("{key: {a: 'text'}, weights: {'': 1}}"); // "invalid" path
assertFixFailure("{key: {a: 'text'}, weights: {'a.': 1}}");
assertFixFailure("{key: {a: 'text'}, weights: {'.a': 1}}");
assertFixFailure("{key: {a: 'text'}, weights: {'a..a': 1}}");
assertFixFailure("{key: {a: 'text'}, weights: {$a: 1}}");
assertFixFailure("{key: {a: 'text'}, weights: {'a.$a': 1}}");
assertFixFailure("{key: {a: 'text'}, weights: {'a.$**': 1}}");
assertFixFailure("{key: {_fts: 'text', _ftsx: 1}, weights: {}}");
assertFixFailure("{key: {_fts: 'text', _ftsx: 1}}");
}
TEST(FTSSpec, FixLanguageOverride1) {
assertFixSuccess("{key: {a: 'text'}, language_override: 'foo'}");
assertFixSuccess("{key: {a: 'text'}, language_override: 'foo$bar'}");
assertFixFailure("{key: {a: 'text'}, language_override: 'foo.bar'}"); // can't have '.'
assertFixFailure("{key: {a: 'text'}, language_override: ''}");
assertFixFailure("{key: {a: 'text'}, language_override: '$foo'}");
}
TEST(FTSSpec, FixTextIndexVersion1) {
assertFixSuccess("{key: {a: 'text'}, textIndexVersion: 1.0}}");
assertFixSuccess("{key: {a: 'text'}, textIndexVersion: NumberInt(1)}}");
assertFixSuccess("{key: {a: 'text'}, textIndexVersion: NumberLong(1)}}");
assertFixSuccess("{key: {a: 'text'}, textIndexVersion: 2.0}}");
assertFixSuccess("{key: {a: 'text'}, textIndexVersion: NumberInt(2)}}");
assertFixSuccess("{key: {a: 'text'}, textIndexVersion: NumberLong(2)}}");
assertFixSuccess("{key: {a: 'text'}, textIndexVersion: 3.0}");
assertFixSuccess("{key: {a: 'text'}, textIndexVersion: NumberInt(3)}}");
assertFixSuccess("{key: {a: 'text'}, textIndexVersion: NumberLong(3)}}");
assertFixFailure("{key: {a: 'text'}, textIndexVersion: 4}");
assertFixFailure("{key: {a: 'text'}, textIndexVersion: '2'}");
assertFixFailure("{key: {a: 'text'}, textIndexVersion: {}}");
}
TEST(FTSSpec, ScoreSingleField1) {
BSONObj user = BSON("key" << BSON("title"
<< "text"
<< "text"
<< "text") << "weights" << BSON("title" << 10));
FTSSpec spec(assertGet(FTSSpec::fixSpec(user)));
TermFrequencyMap m;
spec.scoreDocument(BSON("title"
<< "cat sat run"),
&m);
ASSERT_EQUALS(3U, m.size());
ASSERT_EQUALS(m["cat"], m["sat"]);
ASSERT_EQUALS(m["cat"], m["run"]);
ASSERT(m["cat"] > 0);
}
TEST(FTSSpec, ScoreMultipleField1) {
BSONObj user = BSON("key" << BSON("title"
<< "text"
<< "text"
<< "text") << "weights" << BSON("title" << 10));
FTSSpec spec(assertGet(FTSSpec::fixSpec(user)));
TermFrequencyMap m;
spec.scoreDocument(BSON("title"
<< "cat sat run"
<< "text"
<< "cat book"),
&m);
ASSERT_EQUALS(4U, m.size());
ASSERT_EQUALS(m["sat"], m["run"]);
ASSERT(m["sat"] > 0);
ASSERT(m["cat"] > m["sat"]);
ASSERT(m["cat"] > m["book"]);
ASSERT(m["book"] > 0);
ASSERT(m["book"] < m["sat"]);
}
TEST(FTSSpec, ScoreMultipleField2) {
// Test where one indexed field is a parent component of another indexed field.
BSONObj user = BSON("key" << BSON("a"
<< "text"
<< "a.b"
<< "text"));
FTSSpec spec(assertGet(FTSSpec::fixSpec(user)));
TermFrequencyMap m;
spec.scoreDocument(BSON("a" << BSON("b"
<< "term")),
&m);
ASSERT_EQUALS(1U, m.size());
}
TEST(FTSSpec, ScoreRepeatWord) {
BSONObj user = BSON("key" << BSON("title"
<< "text"
<< "text"
<< "text") << "weights" << BSON("title" << 10));
FTSSpec spec(assertGet(FTSSpec::fixSpec(user)));
TermFrequencyMap m;
spec.scoreDocument(BSON("title"
<< "cat sat sat run run run"),
&m);
ASSERT_EQUALS(3U, m.size());
ASSERT(m["cat"] > 0);
ASSERT(m["sat"] > m["cat"]);
ASSERT(m["run"] > m["sat"]);
}
TEST(FTSSpec, Extra1) {
BSONObj user = BSON("key" << BSON("data"
<< "text"));
FTSSpec spec(assertGet(FTSSpec::fixSpec(user)));
ASSERT_EQUALS(0U, spec.numExtraBefore());
ASSERT_EQUALS(0U, spec.numExtraAfter());
}
TEST(FTSSpec, Extra2) {
BSONObj user = BSON("key" << BSON("data"
<< "text"
<< "x" << 1));
BSONObj fixed = assertGet(FTSSpec::fixSpec(user));
FTSSpec spec(fixed);
ASSERT_EQUALS(0U, spec.numExtraBefore());
ASSERT_EQUALS(1U, spec.numExtraAfter());
ASSERT_EQUALS(StringData("x"), spec.extraAfter(0));
BSONObj fixed2 = assertGet(FTSSpec::fixSpec(fixed));
ASSERT_EQUALS(fixed, fixed2);
}
TEST(FTSSpec, Extra3) {
BSONObj user = BSON("key" << BSON("x" << 1 << "data"
<< "text"));
BSONObj fixed = assertGet(FTSSpec::fixSpec(user));
ASSERT_EQUALS(BSON("x" << 1 << "_fts"
<< "text"
<< "_ftsx" << 1),
fixed["key"].Obj());
ASSERT_EQUALS(BSON("data" << 1), fixed["weights"].Obj());
BSONObj fixed2 = assertGet(FTSSpec::fixSpec(fixed));
ASSERT_EQUALS(fixed, fixed2);
FTSSpec spec(fixed);
ASSERT_EQUALS(1U, spec.numExtraBefore());
ASSERT_EQUALS(StringData("x"), spec.extraBefore(0));
ASSERT_EQUALS(0U, spec.numExtraAfter());
BSONObj prefix;
ASSERT(spec.getIndexPrefix(BSON("x" << 2), &prefix).isOK());
ASSERT_EQUALS(BSON("x" << 2), prefix);
ASSERT(spec.getIndexPrefix(BSON("x" << 3 << "y" << 4), &prefix).isOK());
ASSERT_EQUALS(BSON("x" << 3), prefix);
ASSERT(!spec.getIndexPrefix(BSON("x" << BSON("$gt" << 5)), &prefix).isOK());
ASSERT(!spec.getIndexPrefix(BSON("y" << 4), &prefix).isOK());
ASSERT(!spec.getIndexPrefix(BSONObj(), &prefix).isOK());
}
// Test for correct behavior when encountering nested arrays (both directly nested and
// indirectly nested).
TEST(FTSSpec, NestedArraysPos1) {
BSONObj user = BSON("key" << BSON("a.b"
<< "text"));
FTSSpec spec(assertGet(FTSSpec::fixSpec(user)));
// The following document matches {"a.b": {$type: 2}}, so "term" should be indexed.
BSONObj obj = fromjson("{a: [{b: ['term']}]}"); // indirectly nested arrays
TermFrequencyMap m;
spec.scoreDocument(obj, &m);
ASSERT_EQUALS(1U, m.size());
}
TEST(FTSSpec, NestedArraysPos2) {
BSONObj user = BSON("key" << BSON("$**"
<< "text"));
FTSSpec spec(assertGet(FTSSpec::fixSpec(user)));
// The wildcard spec implies a full recursive traversal, so "term" should be indexed.
BSONObj obj = fromjson("{a: {b: [['term']]}}"); // directly nested arrays
TermFrequencyMap m;
spec.scoreDocument(obj, &m);
ASSERT_EQUALS(1U, m.size());
}
TEST(FTSSpec, NestedArraysNeg1) {
BSONObj user = BSON("key" << BSON("a.b"
<< "text"));
FTSSpec spec(assertGet(FTSSpec::fixSpec(user)));
// The following document does not match {"a.b": {$type: 2}}, so "term" should not be
// indexed.
BSONObj obj = fromjson("{a: {b: [['term']]}}"); // directly nested arrays
TermFrequencyMap m;
spec.scoreDocument(obj, &m);
ASSERT_EQUALS(0U, m.size());
}
// Multi-language test_1: test independent stemming per sub-document
TEST(FTSSpec, NestedLanguages_PerArrayItemStemming) {
BSONObj indexSpec = BSON("key" << BSON("a.b.c"
<< "text"));
FTSSpec spec(assertGet(FTSSpec::fixSpec(indexSpec)));
TermFrequencyMap tfm;
BSONObj obj = fromjson(
"{ a :"
" { b :"
" [ { c : \"walked\", language : \"english\" },"
" { c : \"camminato\", language : \"italian\" },"
" { c : \"ging\", language : \"german\" } ]"
" }"
" }");
spec.scoreDocument(obj, &tfm);
set<string> hits;
hits.insert("walk");
hits.insert("cammin");
hits.insert("ging");
for (TermFrequencyMap::const_iterator i = tfm.begin(); i != tfm.end(); ++i) {
string term = i->first;
ASSERT_EQUALS(1U, hits.count(term));
}
}
// Multi-language test_2: test nested stemming per sub-document
TEST(FTSSpec, NestedLanguages_PerSubdocStemming) {
BSONObj indexSpec = BSON("key" << BSON("a.b.c"
<< "text"));
FTSSpec spec(assertGet(FTSSpec::fixSpec(indexSpec)));
TermFrequencyMap tfm;
BSONObj obj = fromjson(
"{ language : \"english\","
" a :"
" { language : \"danish\","
" b :"
" [ { c : \"foredrag\" },"
" { c : \"foredragsholder\" },"
" { c : \"lector\" } ]"
" }"
"}");
spec.scoreDocument(obj, &tfm);
set<string> hits;
hits.insert("foredrag");
hits.insert("foredragshold");
hits.insert("lector");
for (TermFrequencyMap::const_iterator i = tfm.begin(); i != tfm.end(); ++i) {
string term = i->first;
ASSERT_EQUALS(1U, hits.count(term));
}
}
// Multi-language test_3: test nested arrays
TEST(FTSSpec, NestedLanguages_NestedArrays) {
BSONObj indexSpec = BSON("key" << BSON("a.b.c"
<< "text"));
FTSSpec spec(assertGet(FTSSpec::fixSpec(indexSpec)));
TermFrequencyMap tfm;
BSONObj obj = fromjson(
"{ language : \"english\","
" a : ["
" { language : \"danish\","
" b :"
" [ { c : [\"foredrag\"] },"
" { c : [\"foredragsholder\"] },"
" { c : [\"lector\"] } ]"
" } ]"
"}");
spec.scoreDocument(obj, &tfm);
set<string> hits;
hits.insert("foredrag");
hits.insert("foredragshold");
hits.insert("lector");
for (TermFrequencyMap::const_iterator i = tfm.begin(); i != tfm.end(); ++i) {
string term = i->first;
ASSERT_EQUALS(1U, hits.count(term));
}
}
// Multi-language test_4: test pruning
TEST(FTSSpec, NestedLanguages_PathPruning) {
BSONObj indexSpec = BSON("key" << BSON("a.b.c"
<< "text"));
FTSSpec spec(assertGet(FTSSpec::fixSpec(indexSpec)));
TermFrequencyMap tfm;
BSONObj obj = fromjson(
"{ language : \"english\","
" a : "
" { language : \"danish\","
" bc : \"foo\","
" b : { d: \"bar\" },"
" b :"
" [ { c : \"foredrag\" },"
" { c : \"foredragsholder\" },"
" { c : \"lector\" } ]"
" }"
"}");
spec.scoreDocument(obj, &tfm);
set<string> hits;
hits.insert("foredrag");
hits.insert("foredragshold");
hits.insert("lector");
for (TermFrequencyMap::const_iterator i = tfm.begin(); i != tfm.end(); ++i) {
string term = i->first;
ASSERT_EQUALS(1U, hits.count(term));
}
}
// Multi-language test_5: test wildcard spec
TEST(FTSSpec, NestedLanguages_Wildcard) {
BSONObj indexSpec = BSON("key" << BSON("$**"
<< "text"));
FTSSpec spec(assertGet(FTSSpec::fixSpec(indexSpec)));
TermFrequencyMap tfm;
BSONObj obj = fromjson(
"{ language : \"english\","
" b : \"walking\","
" c : { e: \"walked\" },"
" d : "
" { language : \"danish\","
" e :"
" [ { f : \"foredrag\" },"
" { f : \"foredragsholder\" },"
" { f : \"lector\" } ]"
" }"
"}");
spec.scoreDocument(obj, &tfm);
set<string> hits;
hits.insert("foredrag");
hits.insert("foredragshold");
hits.insert("lector");
hits.insert("walk");
for (TermFrequencyMap::const_iterator i = tfm.begin(); i != tfm.end(); ++i) {
string term = i->first;
ASSERT_EQUALS(1U, hits.count(term));
}
}
// Multi-language test_6: test wildcard spec with override
TEST(FTSSpec, NestedLanguages_WildcardOverride) {
BSONObj indexSpec = BSON("key" << BSON("$**"
<< "text") << "weights" << BSON("d.e.f" << 20));
FTSSpec spec(assertGet(FTSSpec::fixSpec(indexSpec)));
TermFrequencyMap tfm;
BSONObj obj = fromjson(
"{ language : \"english\","
" b : \"walking\","
" c : { e: \"walked\" },"
" d : "
" { language : \"danish\","
" e :"
" [ { f : \"foredrag\" },"
" { f : \"foredragsholder\" },"
" { f : \"lector\" } ]"
" }"
"}");
spec.scoreDocument(obj, &tfm);
set<string> hits;
hits.insert("foredrag");
hits.insert("foredragshold");
hits.insert("lector");
hits.insert("walk");
for (TermFrequencyMap::const_iterator i = tfm.begin(); i != tfm.end(); ++i) {
string term = i->first;
ASSERT_EQUALS(1U, hits.count(term));
}
}
/** Test differences across textIndexVersion values in handling of nested arrays. */
TEST(FTSSpec, TextIndexLegacyNestedArrays) {
BSONObj obj = fromjson("{a: [{b: ['hello']}]}");
// textIndexVersion=1 FTSSpec objects do not index nested arrays.
{
BSONObj indexSpec = fromjson("{key: {'a.b': 'text'}, textIndexVersion: 1}");
FTSSpec spec(assertGet(FTSSpec::fixSpec(indexSpec)));
TermFrequencyMap tfm;
spec.scoreDocument(obj, &tfm);
ASSERT_EQUALS(tfm.size(), 0U);
}
// textIndexVersion=2 FTSSpec objects do index nested arrays.
{
BSONObj indexSpec = fromjson("{key: {'a.b': 'text'}, textIndexVersion: 2}");
FTSSpec spec(assertGet(FTSSpec::fixSpec(indexSpec)));
TermFrequencyMap tfm;
spec.scoreDocument(obj, &tfm);
ASSERT_EQUALS(tfm.size(), 1U);
}
}
/** Test differences across textIndexVersion values in handling of language annotations. */
TEST(FTSSpec, TextIndexLegacyLanguageRecognition) {
BSONObj obj = fromjson("{a: 'the', language: 'EN'}");
// textIndexVersion=1 FTSSpec objects treat two-letter language annotations as "none"
// for purposes of stopword processing.
{
BSONObj indexSpec = fromjson("{key: {'a': 'text'}, textIndexVersion: 1}");
FTSSpec spec(assertGet(FTSSpec::fixSpec(indexSpec)));
TermFrequencyMap tfm;
spec.scoreDocument(obj, &tfm);
ASSERT_EQUALS(tfm.size(), 1U); // "the" not recognized as stopword
}
// textIndexVersion=2 FTSSpec objects recognize two-letter codes.
{
BSONObj indexSpec = fromjson("{key: {'a': 'text'}, textIndexVersion: 2}");
FTSSpec spec(assertGet(FTSSpec::fixSpec(indexSpec)));
TermFrequencyMap tfm;
spec.scoreDocument(obj, &tfm);
ASSERT_EQUALS(tfm.size(), 0U); // "the" recognized as stopword
}
}
}
}
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