added a configuration file and library

definitions.py

@@ -0,0 +1,19 @@
+"""This file contains definitions that will be used throughout the entire
+project
+"""
+
+from __future__ import annotations
+
+from pathlib import Path
+from enum import Enum, auto
+
+PROJECT_ROOT = Path(__file__).parent
+
+
+class Subsystems(Enum):
+    """enum of the simulated subsystems."""
+
+    ADCS = auto()
+    EPS = auto()
+    IRIS = auto()
+    UHF = auto()

docs/definitions.md

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+# Definitions Module
+
+## Overview
+
+This module contains immutable definitions that are shared
+throughout the project. Things such as the root path of the
+project directory on any file system, and `enum` that
+represents the different simulated subsystems.
+
+## Content
+
+### PROJECT_ROOT
+
+This is a `pathlib.Path` object that contains the path to
+the root of the project. This value is dynamic, as it 
+will update between machines.
+
+### Subsystems
+
+This `enum` contains the fixed grouping of subsystems
+supported by this project.

docs/simconfig.md

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+# Simconfig Module
+
+## Overview
+
+This is a helper library that can read the `simulated_config.ini`
+configuration files.
+
+## Usage
+
+### Obtaining root config
+
+The following Python snippet is how the configuration
+dictionary can be obtained from the configuration file
+in the root.
+
+```python
+from simconfig import get_simulated_config
+from definitions import TEST_PATH, Subsystems
+
+config_dictionary = get_simulated_config(TEST_PATH, Subsystems.ADCS)
+
+config_dictionary
+# {"port": "61200"}
+```

docs/testing.md

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+# Testing
+
+## Dependencies
+
+| Module name | version |
+| --- | --- |
+| Python | >=3.10 |
+| pytest | |
+
+## Running Tests
+
+To run tests in this repository, navigate to the project root, and run the
+following command:
+```bash
+pytest
+```
+
+## Writing Tests
+
+Simply add a new file with a name that starts with the word `test` in the
+`test` directory. You do not need to import `pytest`, only the module
+that you are trying to test. To get a quick overview of python modules,
+refer to [this document](https://docs.python.org/3.10/tutorial/modules.html).

simconfig/__init__.py

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+"""This library provides the tools required to read configuration from the filesystem.
+Using the INI format as it has broad compatabilities.
+"""
+
+from __future__ import annotations
+
+from configparser import ConfigParser
+from pathlib import Path
+
+from definitions import Subsystems
+
+
+def get_simulated_config(
+    config_file_path: Path, subsystem: Subsystems
+) -> dict[str, str]:
+    """This function will read the configuration
+    file defined by config_file_path and obtain
+    the configuration for the defined subsystem.
+    """
+    config = ConfigParser()
+    config.read(config_file_path)
+
+    subsystem_name = subsystem.name.lower()
+    return dict(config[subsystem_name])
+
+
+def make_fresh_config(file_path: Path) -> None:
+    """This function creates a new subsystem_config.ini file, in the case that
+    a reset must occur.
+
+    Will create configuration for all the subsystems that are defined in the
+    definitions.py file.
+    """
+    config = ConfigParser()
+    for index, subsystem in enumerate(Subsystems):
+        config[subsystem.name.lower()] = _make_default_subsystem_values(index)
+
+    with open(file_path, "w", encoding="utf-8") as configfile:
+        config.write(configfile)
+
+
+def _make_default_subsystem_values(i: int) -> dict[str, str]:
+    """This makes the default port for the simulated subsystem. Takes a port
+    offset as parameter.
+
+    NOTE:
+    -   Left as a function for potential future extensions.
+    -   The port is in the ephemeral range.
+    """
+    sim_port = 61200 + i
+
+    return {"port": str(sim_port)}

simulated_config.ini

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+[adcs]
+port = 61200
+
+[eps]
+port = 61201
+
+[iris]
+port = 61202
+
+[uhf]
+port = 61203
+

test/test_sim_config.py

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+"""Tests for the config reader helper library"""
+
+from __future__ import annotations
+
+from configparser import ConfigParser
+
+import definitions
+from simconfig import get_simulated_config, make_fresh_config
+
+TEST_PATH = definitions.PROJECT_ROOT / "test.ini"
+
+
+def test_make_default_simconfig() -> None:
+    """Tests if we could make a clean configuration file"""
+    checks = tuple(x.name.lower() for x in definitions.Subsystems)
+    make_fresh_config(TEST_PATH)
+    read_config = ConfigParser()
+    read_config.read(TEST_PATH)
+
+    for index, subsystem in enumerate(checks):
+        config_port = read_config[subsystem]["port"]
+        # There is a hardcoded testing value for the port. At risk of change
+        assert int(config_port) == 61200 + index, f"{subsystem}"
+
+    TEST_PATH.unlink()
+
+
+def test_obtain_default_ports() -> None:
+    """Testing if we could read from the config file, and
+    obtain the ports"""
+    checks = tuple(x for x in definitions.Subsystems)
+    make_fresh_config(TEST_PATH)
+    read_config = ConfigParser()
+    read_config.read(TEST_PATH)
+
+    for index, subsystem in enumerate(checks):
+        config_dict = get_simulated_config(TEST_PATH, subsystem)
+        # There is a hardcoded testing value for the port. At risk of change
+        assert (
+            "port" in config_dict
+        ), f"Missing port for {subsystem.name}, a required field"
+        assert int(config_dict["port"]) == 61200 + index, f"{subsystem}"
+
+    TEST_PATH.unlink()