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dbrock/example.bats

Created October 23, 2013 22:06
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Example of the limits of the Bats preprocessor.
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example.bats
# -*- sh -*-
@test "empty input" { diff <<'^D' - <(bin/html </dev/null); }
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
</head>
<body>
</body>
</html>
^D
@sstephenson
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Yeah, it could be smarter about single-line test declarations. The preprocessor doesn't touch anything past the first line though, so this should work:

@test "empty input" { 
  diff - <(bin/html </dev/null)
}<<'^D'
<!doctype html>
<html lang="en">
  <head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width">
  </head>
  <body>
  </body>
</html>
^D

@dbrock
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dbrock commented Oct 23, 2013

Thanks. Good to know that it only touches the first line. And the function redirection is a great workaround to avoid having to put the brace after the heredoc!

I’ll dig in to the parser to see how it works. Lately I’ve been playing around with the function declaration syntax a lot and having a lot of fun with it, using other kinds of compound commands for function bodies instead of the usual { ... }, etc. I kind of like how flexible it is!

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