Add tests

tests/test_discord_rss_bot.py

@@ -1,5 +1,53 @@
-from discord_rss_bot import __version__
+import os
+
+from discord_rss_bot.main import app
+from discord_rss_bot.settings import Settings
+from typer.testing import CliRunner
+
+runner = CliRunner()
 
 
-def test_version():
-    assert __version__ == '0.1.0'
+def test_stats():
+    result = runner.invoke(app, "stats")
+    assert result.exit_code == 0
+    assert "Average number of entries per day:" in result.stdout
+
+
+def test_check():
+    result = runner.invoke(app, "check")
+    assert result.exit_code == 0
+
+
+def test_backup():
+    # Where we store backups
+    backup_dir = os.path.join(Settings.app_dir, "backup")
+
+    # Check how many files in the backup directory
+    files_before = len(os.listdir(backup_dir))
+
+    # Run the backup command
+    result = runner.invoke(app, "backup")
+
+    # Check how many files in the backup directory after the backup
+    files_after = len(os.listdir(backup_dir))
+
+    # Check if the exit code is 0 and if we got one file more
+    assert result.exit_code == 0
+    assert files_after == files_before + 1
+
+
+def test_add():
+    result = runner.invoke(app, "add https://www.reddit.com/r/Games/new/.rss")
+
+    # Check if the exit code is 0 and if the output contains the word "added" or "already"
+    assert result.exit_code == 0
+    assert "added" or "already" in result.stdout
+
+
+def test_delete():
+    # https://typer.tiangolo.com/tutorial/testing/#testing-input
+    result = runner.invoke(app, "delete", input="1\nY\n")
+
+    # Check if the exit code is 0 and if the output contains the word "deleted"
+    assert result.exit_code == 0
+    assert "deleted" in result.stdout