BessereTests/README.md

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# Bessere Tests
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**Bessere Tests** is a dead simple and easy to setup unit testing system for Godot 4.
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## Index
- [Why](#why)
- [Installation](#installation)
- [Writing tests](#writing-tests)
- [Configuring](#configuring)
- [File structure](#file-structure)
## Why?
Why this exist you might ask? Well...:
- Gut 9 doesn't seem to support using get_tree() at all
- every other unit testing plugin is too simple or complicated
- we wanted to write our own
## Installation
To install BessereTests execute this in your project root:
```bash
mkdir -p submodules addons # Create 'submodules' and 'addons' folders
cd submodules
touch .gdignore # Make Godot ignore the 'submodules' directory
# Now choose what you want to do:
# -> Cloning (use if you don't use git (yet))
git clone https://git.staropensource.de/StarOpenSource/BessereTests.git besseretests
# -> Using submodules (use if you have a git repository set up)
# git submodule update --init --recursive
# git submodule add https://git.staropensource.de/StarOpenSource/BessereTests.git besseretests
cd ../addons
ln -s ../submodules/besseretests/addons/besseretests . # Symlink 'submodules/besseretests/addons/besseretests' to 'addons/besseretools'
```
Now simply activate the plugin in your project settings. To run tests, simply click the *Run tests* button in the upper-left corner of your main editor window.
## Writing tests
First of all create a directory at `res://tests` (default path, is customizable). Then create a GDScript file, we'll name it `readme_example.gd`. Now open your script and replace the contents with this:
```gdscript
extends BessereTestsTest
# You can name this whatever you want as long as the function is prefixed with 'test_'.
# If not, it will not be run.
func test_example() -> void:
# Logging examples
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ldiag("DIAGNOSTIC MESSAGE")
lverb("VERBOSE MESSAGE")
linfo("INFORMATIONAL MESSAGE")
lwarn("WARNING MESSAGE")
lerror("ERROR MESSAGE")
#await lcrash("Something horrible happened") # Must be awaited, uncomment for a little nuke
# Test result
# You can use `ok(message)`, `warn(message)`, `error(message)` or `skip(message)` to set your test result.
ok("Hello Test!")
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# You can create multiple tests btw.
func test_proprietary_blob() -> void:
error("Not open source.")
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# Some unimplemented test
func test_unimplemented() -> void:
skip()
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```
Use this example to build your tests. And remember: You can have multiple test files (we call them "test suites" or "suites" for short).
## Configuring
If you want to update **Bessere Tests**'s configuration create a GDScript file at `res://addons/besseretests_config.gd` and paste this in:
```gdscript
extends Node
# What directory should tests be located in?
var test_directory: String = "res://tests"
```
This is the default configuration. If you want to keep a config key to it's default simply comment it out.
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## Command line
Use this command to test your project in the command line:
```bash
/bin/to/godot.binary --headless -d -v -s --path "." addons/besseretests/src/cmd.gd
# │ │ │ │ │ │ └───────── Path to Bessere Tests' command line script
# │ │ │ │ └──────┴──────────── Tells Godot where your project is located
# │ │ │ └───────────────────── Tells Godot to operate in script mode
# │ │ └─────────────────────── Makes the output verbose, omit if it prints too much irrelevant output
# │ └───────────────────────── Starts the engine in debug mode, helps debugging issues in your tests
# └─────────────────────────────────── Tells Godot to not display a window. Omit if you strictly need a window.
```
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## File structure
Here's a file structure for this project:
```plain
.
├── addons
│   ├── besseretests
│   │   ├── examples Example tests used during development
│   │   │   ├── example_test.gd Contains many tests
│   │   │   └── showcase_logging.gd Simply tests the logger functionality
│   │   ├── plugin.cfg
│   │   ├── plugin.gd Plugin enable/disable logic
│   │   ├── scenesrc
│   │   │   ├── editorbutton.tscn
│   │   │   └── runtimescene.tscn
│   │   └── src
│   │   ├── editorbutton.gd The run scene button but it points to 'res://addons/besseretests/scenesrc/runtimescene.tscn'
│   │   ├── runtimescene.gd Where the real magic happens, executed after clicking on 'Run tests'
│   │   └── testclass.gd The 'BessereTestsTest' class
│   └── besseretests_config.gd Configuration file for development
├── LICENSE
├── project.godot
└── README.md
```