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You are broadcasting those code-sniplets (for testing!), right?

You have to build a tree, or in this case a line as: map -> odom -> base_link -> base_laser

If you look at the code sniplets you have posted, you can see, that you interchanged parent and child a bid.

You also have to continuously publish all transforms and later on obviously with real data. If that doesn't help follow the comment by Eric Perko.