jstests/core/mr_comments.js


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t = db.mr_comments;
t.drop();

t.insert({foo: 1});
t.insert({foo: 1});
t.insert({foo: 2});

res = db.runCommand({
    mapreduce: "mr_comments",
    map: "// This will fail\n\n    // Emit some stuff\n    emit(this.foo, 1)\n",
    reduce: function(key, values) {
        return Array.sum(values);
    },
    out: "mr_comments_out"
});
assert.eq(3, res.counts.emit);

res = db.runCommand({
    mapreduce: "mr_comments",
    map: "// This will fail\nfunction(){\n    // Emit some stuff\n    emit(this.foo, 1)\n}\n",
    reduce: function(key, values) {
        return Array.sum(values);
    },
    out: "mr_comments_out"
});

assert.eq(3, res.counts.emit);