Fix web concurrency Gunicorn worker calculation

#11

The README explains, "If either `MAX_WORKERS` or `WEB_CONCURRENCY` are
set to 1, the total number of workers will be 1, overriding the default
minimum of 2." This was true for `MAX_WORKERS`, but `WEB_CONCURRENCY`
was still set to minimum 2.

This commit will allow `WEB_CONCURRENCY` (number of Gunicorn workers) to
have a minimum of 1.

Author: br3ndonland

inboard/gunicorn_conf.py

@@ -16,7 +16,7 @@ def calculate_workers(
     if max_workers_str and int(max_workers_str) > 0:
         use_max_workers = int(max_workers_str)
     if web_concurrency_str and int(web_concurrency_str) > 0:
-        use_web_concurrency = max(int(web_concurrency_str), 2)
+        use_web_concurrency = int(web_concurrency_str)
     return (
         min(use_max_workers, use_web_concurrency)
         if max_workers_str and web_concurrency_str

tests/test_start.py

@@ -69,21 +69,22 @@ def test_gunicorn_conf_workers_custom_max(self, monkeypatch: MonkeyPatch) -> Non
             == 1
         )
 
+    @pytest.mark.parametrize("number_of_workers", ["1", "2", "4"])
     def test_gunicorn_conf_workers_custom_concurrency(
-        self, monkeypatch: MonkeyPatch
+        self, monkeypatch: MonkeyPatch, number_of_workers: str
     ) -> None:
         """Test custom Gunicorn worker process calculation."""
-        monkeypatch.setenv("WEB_CONCURRENCY", "4")
+        monkeypatch.setenv("WEB_CONCURRENCY", number_of_workers)
         monkeypatch.setenv("WORKERS_PER_CORE", "0.5")
-        assert os.getenv("WEB_CONCURRENCY") == "4"
+        assert os.getenv("WEB_CONCURRENCY") == number_of_workers
         assert os.getenv("WORKERS_PER_CORE") == "0.5"
         assert (
             gunicorn_conf.calculate_workers(
                 None,
                 str(os.getenv("WEB_CONCURRENCY")),
                 str(os.getenv("WORKERS_PER_CORE")),
             )
-            == 4
+            == int(number_of_workers)
         )
 
     def test_gunicorn_conf_workers_custom_cores(self, monkeypatch: MonkeyPatch) -> None: