(function() {
    "use strict";

    function assertFailsValidation(res) {
        var DocumentValidationFailure = 121;
        assert.writeError(res);
        assert.eq(res.getWriteError().code, DocumentValidationFailure);
    }

    var t = db.doc_validation_options;
    t.drop();
    
    assert.commandWorked(db.createCollection(t.getName(),
                                             {validator: {a : 1}}));

    assertFailsValidation(t.insert({a:2}));
    t.insert({a:1});
    assert.eq(1, t.count());

    // test default to strict
    assertFailsValidation(t.update({}, {$set: {a:2}}));
    assert.eq(1, t.find({a:1}).itcount());

    // check we can do a bad update in warn mode
    assert.commandWorked(t.runCommand("collMod",
                                      {validationAction: "warn"}));
    t.update({}, {$set: {a:2}});
    assert.eq(1, t.find({a:2}).itcount());

    // TODO: check log for message?

    // make sure persisted
    var info = db.getCollectionInfos({name: t.getName()})[0];
    assert.eq("warn", info.options.validationAction, tojson(info));
    
    // check we can go back to enforce strict
    assert.commandWorked(t.runCommand("collMod",
                                      {validationAction: "error",
                                       validationLevel: "strict"}));
    assertFailsValidation(t.update({}, {$set: {a:3}}));
    assert.eq(1, t.find({a:2}).itcount());
    
    // check bad -> bad is ok
    assert.commandWorked(t.runCommand("collMod",
                                      {validationLevel: "moderate"}));
    t.update({}, {$set: {a:3}});
    assert.eq(1, t.find({a:3}).itcount());

    // test create
    t.drop();
    assert.commandWorked(db.createCollection(t.getName(),
                                             {validator: {a : 1},
                                              validationAction: "warn"}));
    
    t.insert({a:2});
    t.insert({a:1});
    assert.eq(2, t.count());
    
})();