Add bashunit (#82)

* Add bashunit

* Add bashunit authors

* Add bashunit docs link

Author: Chemaclass

_posts/2023-09-11-bashunit.md

@@ -0,0 +1,50 @@
+---
+layout: post
+title: "bashunit"
+description: "A simple testing library for bash scripts."
+category: bash
+tags: [bash, testing, ci]
+---
+
+## Usage
+
+Write tests files like:
+
+```bash
+# file: tests/my_test.sh
+
+function test_using_snake_case() {
+  assertEquals "1" "1"
+  assertContains "Linux" "GNU/Linux"
+}
+
+function testUsingCamelCase() {
+  assertNotContains "Linus" "GNU/Linux"
+  assertMatches ".*Linu*" "GNU/Linux"
+  assertExitCode "0"
+}
+```
+
+Then run the test:
+
+```bash
+$ bashunit tests/my_test.sh
+
+Running logic_test.sh
+✓ Passed: UsingCamelCase
+✓ Passed: Using snake case
+
+Tests:      2 passed, 2 total
+Assertions: 5 passed, 5 total
+All tests passed
+```
+
+## Links
+
+* [Source Code (GitHub)](https://github.com/TypedDevs/bashunit)
+* Authors: [Jose Maria Valera Reales](https://github.com/Chemaclass), [Emmanuel Valverde Ramos](https://github.com/khru), [Antonio Gonzalez Gea
+  ](https://github.com/Tito-Kati)
+* [Documentation](https://bashunit.typeddevs.com)
+
+{% include JB/setup %}
+