tree 5006f1c855d5c4698d7bd6ba9847e4c07ec24f99
parent 56e2570530a3e5c15c73f0cdbfd6790a09e379c9
author Yury Smolsky <yury@smolsky.by> 1520522360 +0200
committer Josh Bleecher Snyder <josharian@gmail.com> 1522438010 +0000

playground: support examples as tests

Playground handles examples in the same way as "go test" does.

If the program contains examples and does not import the "testing"
package, the playground injects the import without changing line numbers.
This is to prevent a mismatch of highlighted error lines on the
web page. The resulting import code is not properly formatted,
but it does not have to be since it is not meant to be read by humans.

Fixes golang/go#24311

Change-Id: I681a22d40d191fe706dfa9949421f4d3829031a4
Reviewed-on: https://go-review.googlesource.com/99595
Reviewed-by: Yury Smolsky <yury@smolsky.by>
Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>