1 files changed, 33 insertions, 0 deletions
diff --git a/fluent-bit/tests/lib/shunit2/examples/mock_file_test.sh b/fluent-bit/tests/lib/shunit2/examples/mock_file_test.sh
new file mode 100755
index 00000000..1da8dd2a
--- /dev/null
+++ b/fluent-bit/tests/lib/shunit2/examples/mock_file_test.sh
@@ -0,0 +1,33 @@
+#!/bin/sh
+#
+# shUnit2 example for mocking files.
+
+MOCK_PASSWD=''  # This will be overridden in oneTimeSetUp().
+
+test_root_uid_from_passed_filename() {
+  result="$(root_uid_from_passed_filename "${MOCK_PASSWD}")"
+  assertEquals 'unexpected root uid' '0' "${result}"
+}
+
+test_root_uid_from_derived_filename() {
+  result="$(root_uid_from_derived_filename)"
+  assertEquals 'unexpected root uid' '0' "${result}"
+}
+
+oneTimeSetUp() {
+  # Provide a mock passwd file for testing. This will be cleaned up
+  # automatically by shUnit2.
+  MOCK_PASSWD="${SHUNIT_TMPDIR}/passwd"
+  cat <<EOF >"${MOCK_PASSWD}"
+nobody:*:-2:-2:Unprivileged User:/var/empty:/usr/bin/false
+root:*:0:0:System Administrator:/var/root:/bin/sh
+daemon:*:1:1:System Services:/var/root:/usr/bin/false
+EOF
+
+  # Load script under test.
+  . './mock_file.sh'
+}
+
+# Load and run shUnit2.
+[ -n "${ZSH_VERSION:-}" ] && SHUNIT_PARENT=$0
+. ../shunit2