New utility for the collection: 'buildrun', a rewrite of my previous

[sgt/utils] / buildrun / test.sh

diff --git a/buildrun/test.sh b/buildrun/test.sh
new file mode 100755 (executable)
index 0000000..8991674
--- /dev/null
+++ b/buildrun/test.sh
@@ -0,0 +1,65 @@
+#!/bin/sh
+
+# Test script for buildrun.
+
+# Can be used with my original inotify-based implementation too,
+# provided you pass --old on the command line.
+
+rm -rf testctl
+rm -f testlog
+
+# The inotify-based version wouldn't cope if the control file didn't
+# exist to begin with. Create an empty one.
+if test "x--old" = "x$1"; then touch testctl; fi
+
+testwrite() { # usage: testwrite <identifier> <exitstatus>
+    buildrun -w testctl sh -c "echo write start $1 >> testlog; sleep 2; echo write end $1 returning $2 >> testlog; exit $2"
+}
+testread() { # usage: testread <identifier>
+    echo read start $1 >> testlog
+    buildrun -r testctl sh -c "echo read end $1 >> testlog"
+}
+
+# Test 1: start buildrun -w first, then buildrun -r. The former
+# completes successfully, and the latter should then finish.
+( testwrite 1 0 ) &
+sleep 0.5
+testread 1
+
+# Test 2: same, but this time the first -w fails and we need a second
+# one that succeeds.
+( testwrite 2a 1; sleep 0.5; testwrite 2b 0 ) &
+sleep 0.5
+testread 2
+
+# Test 3: this time we arrange a failure, and then start up a buildrun
+# -r while no -w is running at all, demonstrating that it can block
+# even when there's nothing to block on.
+testwrite 3pre 1
+( testread 3 ) &
+sleep 0.5
+testwrite 3 0
+sleep 0.5
+
+# Test 4: same, but again we have a failure before a success.
+testwrite 4pre 1
+( testread 4 ) &
+sleep 0.5
+testwrite 4a 1; sleep 0.5; testwrite 4b 0
+sleep 0.5
+
+# Test 5: now that no -w run is active and the last one was
+# successful, do a -r run on its own and check that it returns success
+# without blocking.
+testread 5
+
+if diff -u testout.txt testlog; then
+    # Files match. Report success and clear up.
+    echo "Tests passed."
+    rm -rf testctl
+    rm -f testlog
+else
+    # They don't match. Leave the temporary files lying around and
+    # return failure.
+    exit 1
+fi