fix: rename acceptance/bastunit.sh add _test suffix

Author: Chemaclass

tests/acceptance/bashunit.sh renamed to tests/acceptance/bashunit_test.sh

@@ -1,4 +1,5 @@
 #!/bin/bash
+set -euo pipefail
 
 function set_up_before_script() {
   TEST_ENV_FILE="tests/acceptance/fixtures/.env.default"

tests/acceptance/snapshots/bashunit_test_sh.test_bashunit_should_display_help.snapshot

@@ -0,0 +1,39 @@
+bashunit [arguments] [options]
+
+Arguments:
+  Specifies the directory or file containing the tests to run.
+  If a directory is specified, it will execute the tests within files ending with test.sh.
+  If you use wildcards, bashunit will run any tests it finds.
+
+Options:
+  -a|--assert <function ...args>
+    Run a core assert function standalone without a test context.
+
+  -e|--env <file-path>
+    Load a custom env file overriding the .env environment variables.
+
+  -f|--filter <filter>
+    Filters the tests to run based on the test name.
+
+  -l|--log-junit <out.xml>
+    Create a report JUnit XML file that contains information about the test results.
+
+  -r|--report-html <out.html>
+    Create a report HTML file that contains information about the test results.
+
+  -s|simple || -v|verbose
+    Enables simplified or verbose output to the console.
+
+  -S|--stop-on-failure
+    Force to stop the runner right after encountering one failing test.
+
+  --version
+    Displays the current version of bashunit.
+
+  --upgrade
+    Upgrade to latest version of bashunit.
+
+  --help
+    This message.
+
+See more: https://bashunit.typeddevs.com/command-line