Update test/* directory, it seem to be a bit bit-rotted

Added README; modified sigkill_rain.c to be more understandable,
made clone.c compile; added wait_must_be_interruptible.c test;
updated Makefile and .gitignore.

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>

1 files changed, 17 insertions, 0 deletions

diff --git a/test/README b/test/README
new file mode 100644
index 000000000..7fae09b6f
--- /dev/null
+++ b/test/README
@@ -0,0 +1,17 @@
+To run a test:
+* Run make
+* Run resulting executable(s) under strace
+* Check strace output and/or program's output and exitcode
+
+To add a new test:
+* Add its .c source to this dir
+* Add it to "all" and "clean" targets in Makefile
+* Add it to .gitignore file
+
+Please spend some time making your testcase understandable.
+For example, it may print an explanation how it should be used
+(which strace options to use, and what to look for in strace output).
+
+If possible, make it so that your testcase detects error/bug
+it is intended to test for, and prints error message and exits with 1
+if the bug is detected, instead of relying on user to peruse strace output.