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tag: r2.0.6-rc0
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// unittest.h

/* Copyright 2009 10gen Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/

#pragma once

namespace mongo {

    /* The idea here is to let all initialization of global variables (classes inheriting from UnitTest)
complete before we run the tests -- otherwise order of initilization being arbitrary may mess
us up. The app's main() function should call runTests().

To define a unit test, inherit from this and implement run. instantiate one object for the new class
as a global.

These tests are ran on *every* startup of mongod, so they have to be very lightweight. But it is a
good quick check for a bad build.
*/
    struct UnitTest {
        UnitTest() {
            registerTest(this);
        }
        virtual ~UnitTest() {}

        // assert if fails
        virtual void run() = 0;

        static bool testsInProgress() { return running; }
    private:
        static vector<UnitTest*> *tests;
        static bool running;
    public:
        static void registerTest(UnitTest *t) {
            if ( tests == 0 )
                tests = new vector<UnitTest*>();
            tests->push_back(t);
        }

        static void runTests() {
            running = true;
            for ( vector<UnitTest*>::iterator i = tests->begin(); i != tests->end(); i++ ) {
                (*i)->run();
            }
            running = false;
        }
    };


} // namespace mongo
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