Kir Kolyshkin 6752cc9f2f int-cli/TestSearchCmdOptions: fail earlier
Sometimes this test fails (allegedly due to problems with Docker Hub),
but it fails later than it should, for example:

> 01:20:34.845 assertion failed: expression is false: strings.Count(outSearchCmdStars, "[OK]") <= strings.Count(outSearchCmd, "[OK]"): The quantity of images with stars should be less than that of all images: <...>

This, with non-empty list of images following, means that the initial
`docker search busybox` command returned not enough results. So, add
a check that `docker search busybox` returns something.

While at it,
 * raise the number of stars to 10;
 * simplify check for number of lines (no need to count [OK]'s);
 * improve error message.

Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
(cherry picked from commit 4f80a1953d66265d9a1cbf4e172b8fa58e3e403a)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Upstream-commit: 8a369c735b2bf07da53275fe9fe61d429320f233
Component: engine
2019-05-21 12:50:36 +02:00
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