// namespacestring_test.cpp

/*    Copyright 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/unittest/unittest.h"

#include "mongo/db/namespace_string.h"

namespace mongo {

using std::string;

TEST(NamespaceStringTest, Normal) {
    ASSERT(NamespaceString::normal("a"));
    ASSERT(NamespaceString::normal("a.b"));
    ASSERT(NamespaceString::normal("a.b.c"));

    ASSERT(!NamespaceString::normal("a.b.$c"));
    ASSERT(!NamespaceString::normal("a.b.$.c"));

    ASSERT(NamespaceString::normal("local.oplog.$main"));
    ASSERT(NamespaceString::normal("local.oplog.rs"));
}

TEST(NamespaceStringTest, Oplog) {
    ASSERT(!NamespaceString::oplog("a"));
    ASSERT(!NamespaceString::oplog("a.b"));

    ASSERT(NamespaceString::oplog("local.oplog.rs"));
    ASSERT(NamespaceString::oplog("local.oplog.foo"));
    ASSERT(NamespaceString::oplog("local.oplog.$main"));
    ASSERT(NamespaceString::oplog("local.oplog.$foo"));
}

TEST(NamespaceStringTest, Special) {
    ASSERT(NamespaceString::special("a.$.b"));
    ASSERT(NamespaceString::special("a.system.foo"));
    ASSERT(!NamespaceString::special("a.foo"));
    ASSERT(!NamespaceString::special("a.foo.system.bar"));
    ASSERT(!NamespaceString::special("a.systemfoo"));
}

TEST(NamespaceStringTest, DatabaseValidNames) {
    ASSERT(NamespaceString::validDBName("foo"));
    ASSERT(!NamespaceString::validDBName("foo/bar"));
    ASSERT(!NamespaceString::validDBName("foo bar"));
    ASSERT(!NamespaceString::validDBName("foo.bar"));
    ASSERT(!NamespaceString::validDBName("foo.bar"));
    ASSERT(!NamespaceString::validDBName("foo\\bar"));
    ASSERT(!NamespaceString::validDBName("foo\"bar"));
    ASSERT(!NamespaceString::validDBName(StringData("a\0b", StringData::LiteralTag())));
#ifdef _WIN32
    ASSERT(!NamespaceString::validDBName("foo*bar"));
    ASSERT(!NamespaceString::validDBName("foo<bar"));
    ASSERT(!NamespaceString::validDBName("foo>bar"));
    ASSERT(!NamespaceString::validDBName("foo:bar"));
    ASSERT(!NamespaceString::validDBName("foo|bar"));
    ASSERT(!NamespaceString::validDBName("foo?bar"));
#endif

    ASSERT(NamespaceString::normal("asdads"));
    ASSERT(!NamespaceString::normal("asda$ds"));
    ASSERT(NamespaceString::normal("local.oplog.$main"));
}

TEST(NamespaceStringTest, ListCollectionsCursorNS) {
    ASSERT(NamespaceString("test.$cmd.listCollections").isListCollectionsCursorNS());

    ASSERT(!NamespaceString("test.foo").isListCollectionsCursorNS());
    ASSERT(!NamespaceString("test.foo.$cmd.listCollections").isListCollectionsCursorNS());
    ASSERT(!NamespaceString("test.$cmd.").isListCollectionsCursorNS());
    ASSERT(!NamespaceString("test.$cmd.foo.").isListCollectionsCursorNS());
    ASSERT(!NamespaceString("test.$cmd.listCollections.").isListCollectionsCursorNS());
    ASSERT(!NamespaceString("test.$cmd.listIndexes").isListCollectionsCursorNS());
    ASSERT(!NamespaceString("test.$cmd.listIndexes.foo").isListCollectionsCursorNS());
}

TEST(NamespaceStringTest, ListIndexesCursorNS) {
    NamespaceString ns1("test.$cmd.listIndexes.f");
    ASSERT(ns1.isListIndexesCursorNS());
    ASSERT("test.f" == ns1.getTargetNSForListIndexes().ns());

    NamespaceString ns2("test.$cmd.listIndexes.foo");
    ASSERT(ns2.isListIndexesCursorNS());
    ASSERT("test.foo" == ns2.getTargetNSForListIndexes().ns());

    NamespaceString ns3("test.$cmd.listIndexes.foo.bar");
    ASSERT(ns3.isListIndexesCursorNS());
    ASSERT("test.foo.bar" == ns3.getTargetNSForListIndexes().ns());

    ASSERT(!NamespaceString("test.foo").isListIndexesCursorNS());
    ASSERT(!NamespaceString("test.foo.$cmd.listIndexes").isListIndexesCursorNS());
    ASSERT(!NamespaceString("test.$cmd.").isListIndexesCursorNS());
    ASSERT(!NamespaceString("test.$cmd.foo.").isListIndexesCursorNS());
    ASSERT(!NamespaceString("test.$cmd.listIndexes").isListIndexesCursorNS());
    ASSERT(!NamespaceString("test.$cmd.listIndexes.").isListIndexesCursorNS());
    ASSERT(!NamespaceString("test.$cmd.listCollections").isListIndexesCursorNS());
    ASSERT(!NamespaceString("test.$cmd.listCollections.foo").isListIndexesCursorNS());
}

TEST(NamespaceStringTest, CollectionComponentValidNames) {
    ASSERT(NamespaceString::validCollectionComponent("a.b"));
    ASSERT(NamespaceString::validCollectionComponent("a.b"));
    ASSERT(!NamespaceString::validCollectionComponent("a."));
    ASSERT(!NamespaceString::validCollectionComponent("a..foo"));
    ASSERT(NamespaceString::validCollectionComponent("a.b."));  // TODO: should this change?
}

TEST(NamespaceStringTest, CollectionValidNames) {
    ASSERT(NamespaceString::validCollectionName("a"));
    ASSERT(NamespaceString::validCollectionName("a.b"));
    ASSERT(NamespaceString::validCollectionName("a."));    // TODO: should this change?
    ASSERT(NamespaceString::validCollectionName("a.b."));  // TODO: should this change?
    ASSERT(!NamespaceString::validCollectionName(".a"));
    ASSERT(!NamespaceString::validCollectionName("$a"));
    ASSERT(!NamespaceString::validCollectionName("a$b"));
    ASSERT(!NamespaceString::validCollectionName(""));
    ASSERT(!NamespaceString::validCollectionName(StringData("a\0b", StringData::LiteralTag())));
}

TEST(NamespaceStringTest, DBHash) {
    ASSERT_EQUALS(nsDBHash("foo"), nsDBHash("foo"));
    ASSERT_EQUALS(nsDBHash("foo"), nsDBHash("foo.a"));
    ASSERT_EQUALS(nsDBHash("foo"), nsDBHash("foo."));

    ASSERT_EQUALS(nsDBHash(""), nsDBHash(""));
    ASSERT_EQUALS(nsDBHash(""), nsDBHash(".a"));
    ASSERT_EQUALS(nsDBHash(""), nsDBHash("."));

    ASSERT_NOT_EQUALS(nsDBHash("foo"), nsDBHash("food"));
    ASSERT_NOT_EQUALS(nsDBHash("foo."), nsDBHash("food"));
    ASSERT_NOT_EQUALS(nsDBHash("foo.d"), nsDBHash("food"));
}

#define testEqualsBothWays(X, Y)       \
    ASSERT_TRUE(nsDBEquals((X), (Y))); \
    ASSERT_TRUE(nsDBEquals((Y), (X)));
#define testNotEqualsBothWays(X, Y)     \
    ASSERT_FALSE(nsDBEquals((X), (Y))); \
    ASSERT_FALSE(nsDBEquals((Y), (X)));

TEST(NamespaceStringTest, DBEquals) {
    testEqualsBothWays("foo", "foo");
    testEqualsBothWays("foo", "foo.a");
    testEqualsBothWays("foo.a", "foo.a");
    testEqualsBothWays("foo.a", "foo.b");

    testEqualsBothWays("", "");
    testEqualsBothWays("", ".");
    testEqualsBothWays("", ".x");

    testNotEqualsBothWays("foo", "bar");
    testNotEqualsBothWays("foo", "food");
    testNotEqualsBothWays("foo.", "food");

    testNotEqualsBothWays("", "x");
    testNotEqualsBothWays("", "x.");
    testNotEqualsBothWays("", "x.y");
    testNotEqualsBothWays(".", "x");
    testNotEqualsBothWays(".", "x.");
    testNotEqualsBothWays(".", "x.y");
}

TEST(NamespaceStringTest, nsToDatabase1) {
    ASSERT_EQUALS("foo", nsToDatabaseSubstring("foo.bar"));
    ASSERT_EQUALS("foo", nsToDatabaseSubstring("foo"));
    ASSERT_EQUALS("foo", nsToDatabase("foo.bar"));
    ASSERT_EQUALS("foo", nsToDatabase("foo"));
    ASSERT_EQUALS("foo", nsToDatabase(string("foo.bar")));
    ASSERT_EQUALS("foo", nsToDatabase(string("foo")));
}

TEST(NamespaceStringTest, nsToDatabase2) {
    char buf[MaxDatabaseNameLen];

    nsToDatabase("foo.bar", buf);
    ASSERT_EQUALS('f', buf[0]);
    ASSERT_EQUALS('o', buf[1]);
    ASSERT_EQUALS('o', buf[2]);
    ASSERT_EQUALS(0, buf[3]);

    nsToDatabase("bar", buf);
    ASSERT_EQUALS('b', buf[0]);
    ASSERT_EQUALS('a', buf[1]);
    ASSERT_EQUALS('r', buf[2]);
    ASSERT_EQUALS(0, buf[3]);
}

TEST(NamespaceStringTest, NamespaceStringParse1) {
    NamespaceString ns("a.b");
    ASSERT_EQUALS((string) "a", ns.db());
    ASSERT_EQUALS((string) "b", ns.coll());
}

TEST(NamespaceStringTest, NamespaceStringParse2) {
    NamespaceString ns("a.b.c");
    ASSERT_EQUALS((string) "a", ns.db());
    ASSERT_EQUALS((string) "b.c", ns.coll());
}

TEST(NamespaceStringTest, NamespaceStringParse3) {
    NamespaceString ns("abc");
    ASSERT_EQUALS((string) "", ns.db());
    ASSERT_EQUALS((string) "", ns.coll());
}

TEST(NamespaceStringTest, NamespaceStringParse4) {
    NamespaceString ns("abc.");
    ASSERT_EQUALS((string) "abc", ns.db());
    ASSERT_EQUALS((string) "", ns.coll());
}
}