tests: split example_filesystems into its own package

Running these tests from integration_tests' TestMain() was awkward
because they were run twice with unchanged settings.
integration_tests tests everything with OpenSSL and with native
Go crypto, but this does not take affect for the example filesystems.

To make this work, test_helpers is also split into its own package.

1 files changed, 10 insertions, 0 deletions

diff --git a/benchmark-synthetic.bash b/benchmark-synthetic.bash
new file mode 100755
index 0000000..8c5c9ce
--- /dev/null
+++ b/benchmark-synthetic.bash
@@ -0,0 +1,10 @@
+#!/bin/bash
+
+# Run the synthetic benchmarks that are built into gocryptfs using
+# "go test".
+
+set -eu
+
+source build.bash
+
+go test ./tests/integration_tests -bench=. -defaultonly