Solution to secret handshake in Bash

bash/secret-handshake/secret_handshake.bats

@@ -0,0 +1,81 @@
+#!/usr/bin/env bats
+load bats-extra
+
+# local version: 1.2.0.0
+
+@test "wink for 1" {
+    #[[ $BATS_RUN_SKIPPED == "true" ]] || skip
+    run bash secret_handshake.sh 1
+    assert_success
+    assert_output "wink"
+}
+
+@test "double blink for 10" {
+    [[ $BATS_RUN_SKIPPED == "true" ]] || skip
+    run bash secret_handshake.sh 2
+    assert_success
+    assert_output "double blink"
+}
+
+@test "close your eyes for 100" {
+    [[ $BATS_RUN_SKIPPED == "true" ]] || skip
+    run bash secret_handshake.sh 4
+    assert_success
+    assert_output "close your eyes"
+}
+
+@test "jump for 1000" {
+    [[ $BATS_RUN_SKIPPED == "true" ]] || skip
+    run bash secret_handshake.sh 8
+    assert_success
+    assert_output "jump"
+}
+
+@test "combine two actions" {
+    [[ $BATS_RUN_SKIPPED == "true" ]] || skip
+    run bash secret_handshake.sh 3
+    assert_success
+    assert_output "wink,double blink"
+}
+
+@test "all possible actions" {
+    [[ $BATS_RUN_SKIPPED == "true" ]] || skip
+    run bash secret_handshake.sh 15
+    assert_success
+    assert_output "wink,double blink,close your eyes,jump"
+}
+
+@test "do nothing for zero" {
+    [[ $BATS_RUN_SKIPPED == "true" ]] || skip
+    run bash secret_handshake.sh 0
+    assert_success
+    assert_output ""
+}
+
+@test "reversing no actions still gives no actions" {
+    [[ $BATS_RUN_SKIPPED == "true" ]] || skip
+    run bash secret_handshake.sh 16
+    assert_success
+    assert_output ""
+}
+
+@test "reversing one action gives the same action" {
+    [[ $BATS_RUN_SKIPPED == "true" ]] || skip
+    run bash secret_handshake.sh 24
+    assert_success
+    assert_output "jump"
+}
+
+@test "reverse two actions" {
+    [[ $BATS_RUN_SKIPPED == "true" ]] || skip
+    run bash secret_handshake.sh 19
+    assert_success
+    assert_output "double blink,wink"
+}
+
+@test "reverse all possible actions" {
+    [[ $BATS_RUN_SKIPPED == "true" ]] || skip
+    run bash secret_handshake.sh 31
+    assert_success
+    assert_output "jump,close your eyes,double blink,wink"
+}