// update_index_data_tests.cpp


/**
 *    Copyright (C) 2018-present MongoDB, Inc.
 *
 *    This program is free software: you can redistribute it and/or modify
 *    it under the terms of the Server Side Public License, version 1,
 *    as published by MongoDB, Inc.
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 *    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
 *    Server Side Public License for more details.
 *
 *    You should have received a copy of the Server Side Public License
 *    along with this program. If not, see
 *    <http://www.mongodb.com/licensing/server-side-public-license>.
 *
 *    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 Server Side Public License in all respects for
 *    all of the code used other than as permitted herein. If you modify file(s)
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 */

#include "mongo/unittest/unittest.h"

#include "mongo/db/update_index_data.h"

namespace mongo {

using std::string;

TEST(UpdateIndexDataTest, Simple1) {
    UpdateIndexData a;
    a.addPath("a.b");
    ASSERT_TRUE(a.mightBeIndexed("a.b"));
    ASSERT_TRUE(a.mightBeIndexed("a"));
    ASSERT_TRUE(a.mightBeIndexed("a.b.c"));
    ASSERT_TRUE(a.mightBeIndexed("a.$.b"));

    ASSERT_FALSE(a.mightBeIndexed("b"));
    ASSERT_FALSE(a.mightBeIndexed("a.c"));

    a.clear();
    ASSERT_FALSE(a.mightBeIndexed("a.b"));
}

TEST(UpdateIndexDataTest, Simple2) {
    UpdateIndexData a;
    a.addPath("ab");
    ASSERT_FALSE(a.mightBeIndexed("a"));
    a.clear();
    ASSERT_FALSE(a.mightBeIndexed("ab"));
}

TEST(UpdateIndexDataTest, Component1) {
    UpdateIndexData a;
    a.addPathComponent("a");
    ASSERT_FALSE(a.mightBeIndexed(""));
    ASSERT_TRUE(a.mightBeIndexed("a"));
    ASSERT_TRUE(a.mightBeIndexed("b.a"));
    ASSERT_TRUE(a.mightBeIndexed("a.b"));
    ASSERT_TRUE(a.mightBeIndexed("b.a.c"));
    ASSERT_FALSE(a.mightBeIndexed("b.c"));
    ASSERT_FALSE(a.mightBeIndexed("ab"));
    a.clear();
    ASSERT_FALSE(a.mightBeIndexed("a"));
}

TEST(UpdateIndexDataTest, AllPathsIndexed1) {
    UpdateIndexData a;
    a.allPathsIndexed();
    ASSERT_TRUE(a.mightBeIndexed("a"));
    a.clear();
    ASSERT_FALSE(a.mightBeIndexed("a"));
}

TEST(UpdateIndexDataTest, AllPathsIndexed2) {
    UpdateIndexData a;
    a.allPathsIndexed();
    ASSERT_TRUE(a.mightBeIndexed("a"));
    ASSERT_TRUE(a.mightBeIndexed(""));
    a.addPathComponent("a");
    ASSERT_TRUE(a.mightBeIndexed("a"));
    ASSERT_TRUE(a.mightBeIndexed("b"));
    a.clear();
    ASSERT_FALSE(a.mightBeIndexed("a"));
}

TEST(UpdateIndexDataTest, getCanonicalIndexField1) {
    string x;

    ASSERT_FALSE(getCanonicalIndexField("a", &x));
    ASSERT_FALSE(getCanonicalIndexField("aaa", &x));
    ASSERT_FALSE(getCanonicalIndexField("a.b", &x));

    ASSERT_TRUE(getCanonicalIndexField("a.$", &x));
    ASSERT_EQUALS(x, "a");
    ASSERT_TRUE(getCanonicalIndexField("a.0", &x));
    ASSERT_EQUALS(x, "a");
    ASSERT_TRUE(getCanonicalIndexField("a.123", &x));
    ASSERT_EQUALS(x, "a");

    ASSERT_TRUE(getCanonicalIndexField("a.$.b", &x));
    ASSERT_EQUALS(x, "a.b");
    ASSERT_TRUE(getCanonicalIndexField("a.0.b", &x));
    ASSERT_EQUALS(x, "a.b");
    ASSERT_TRUE(getCanonicalIndexField("a.123.b", &x));
    ASSERT_EQUALS(x, "a.b");

    ASSERT_FALSE(getCanonicalIndexField("a.$ref", &x));
    ASSERT_FALSE(getCanonicalIndexField("a.$ref.b", &x));


    ASSERT_FALSE(getCanonicalIndexField("a.c$d.b", &x));

    ASSERT_FALSE(getCanonicalIndexField("a.123a", &x));
    ASSERT_FALSE(getCanonicalIndexField("a.a123", &x));
    ASSERT_FALSE(getCanonicalIndexField("a.123a.b", &x));
    ASSERT_FALSE(getCanonicalIndexField("a.a123.b", &x));

    ASSERT_FALSE(getCanonicalIndexField("a.", &x));
}

TEST(UpdateIndexDataTest, CanonicalIndexFieldForConsecutiveDigits) {
    std::string indexField;

    ASSERT_TRUE(getCanonicalIndexField("a.0.0", &indexField));
    ASSERT_EQ(indexField, "a");

    ASSERT_TRUE(getCanonicalIndexField("a.55.01", &indexField));
    ASSERT_EQ(indexField, "a");

    ASSERT_TRUE(getCanonicalIndexField("a.0.0.b.1", &indexField));
    ASSERT_EQ(indexField, "a");

    ASSERT_TRUE(getCanonicalIndexField("a.0b.1", &indexField));
    ASSERT_EQ(indexField, "a.0b");

    ASSERT_TRUE(getCanonicalIndexField("a.0.b.1.2", &indexField));
    ASSERT_EQ(indexField, "a.b");

    ASSERT_TRUE(getCanonicalIndexField("a.0.11b", &indexField));
    ASSERT_EQ(indexField, "a.11b");
}
}