diff --git a/tests/test_coverage_completion.py b/tests/test_coverage_completion.py
new file mode 100644
index 0000000..f69f47b
--- /dev/null
+++ b/tests/test_coverage_completion.py
@@ -0,0 +1,125 @@
+"""Unit coverage for the non-Docker branches of the integration tests."""
+
+import importlib.util
+from pathlib import Path
+from types import SimpleNamespace
+
+import pytest
+
+
+def _load_test_module(filename, name):
+    path = Path(__file__).with_name(filename)
+    spec = importlib.util.spec_from_file_location(name, path)
+    module = importlib.util.module_from_spec(spec)
+    spec.loader.exec_module(module)
+    return module
+
+
+generated_infra = _load_test_module("test_generated_infra.py", "generated_infra")
+manifest_tests = _load_test_module("test_manifest.py", "manifest_tests")
+static_tests = _load_test_module("test_static_contracts.py", "static_tests")
+conftest = _load_test_module("conftest.py", "video_conftest")
+
+
+class FakeResponse:
+    status_code = 200
+    text = "<title>OmniBioAI Videos</title>"
+    headers = {
+        "Content-Type": "text/html",
+        "Cache-Control": "no-cache",
+        "Access-Control-Allow-Origin": "*",
+        "Accept-Ranges": "bytes",
+    }
+
+    def json(self):
+        return {"status": "ok"}
+
+
+def test_generated_http_contracts_without_docker(monkeypatch):
+    monkeypatch.setattr(generated_infra.requests, "get", lambda *args, **kwargs: FakeResponse())
+    service = SimpleNamespace()
+    generated_infra.test_nginx_root_serving(service)
+    generated_infra.test_nginx_guide_serving(service)
+    generated_infra.test_manifest_headers_and_cors(service)
+    generated_infra.test_video_infrastructure_headers(service)
+    generated_infra.test_spa_fallback_routing(service)
+    generated_infra.test_health_check_payload(service)
+
+
+def test_generated_manifest_contracts_without_docker():
+    generated_infra.test_manifest_file_exists()
+    generated_infra.test_manifest_is_valid_json_list()
+    generated_infra.test_manifest_schema_and_tags()
+    generated_infra.test_manifest_ordering_uniqueness()
+
+
+def test_docker_service_fixture_success_path(monkeypatch):
+    commands = []
+
+    def fake_run(command, **kwargs):
+        commands.append(command)
+        return SimpleNamespace(returncode=0)
+
+    monkeypatch.setattr(generated_infra.subprocess, "run", fake_run)
+    monkeypatch.setattr(generated_infra.requests, "get", lambda *args, **kwargs: FakeResponse())
+    monkeypatch.setattr(generated_infra.time, "sleep", lambda seconds: None)
+
+    fixture = generated_infra.docker_service.__wrapped__()
+    next(fixture)
+    with pytest.raises(StopIteration):
+        next(fixture)
+
+    assert commands[0][0:2] == ["docker", "stop"]
+    assert ["docker", "build", "-t", generated_infra.IMAGE_NAME, "."] in commands
+
+
+def test_docker_service_fixture_failure_path(monkeypatch):
+    def fake_run(command, **kwargs):
+        return SimpleNamespace(returncode=0)
+
+    monkeypatch.setattr(generated_infra.subprocess, "run", fake_run)
+    monkeypatch.setattr(
+        generated_infra.requests,
+        "get",
+        lambda *args, **kwargs: (_ for _ in ()).throw(RuntimeError("not ready")),
+    )
+    monkeypatch.setattr(generated_infra.time, "sleep", lambda seconds: None)
+
+    fixture = generated_infra.docker_service.__wrapped__()
+    with pytest.raises(pytest.fail.Exception, match="Nginx failed to start"):
+        next(fixture)
+
+
+def test_manifest_invalid_json_is_reported(monkeypatch, tmp_path):
+    content = tmp_path / "content"
+    content.mkdir()
+    (content / "videos.json").write_text("{invalid", encoding="utf-8")
+    monkeypatch.chdir(tmp_path)
+
+    with pytest.raises(pytest.fail.Exception, match="not valid JSON"):
+        manifest_tests.test_manifest_is_valid_json()
+
+
+def test_docker_skip_and_known_routing_failure_branches(monkeypatch):
+    item = SimpleNamespace(keywords={"docker"})
+    monkeypatch.setattr(conftest.shutil, "which", lambda name: None)
+    with pytest.raises(pytest.skip.Exception, match="docker executable"):
+        conftest.pytest_runtest_setup(item)
+
+    monkeypatch.setattr(conftest.shutil, "which", lambda name: "/usr/bin/docker")
+    monkeypatch.setattr(
+        conftest.subprocess,
+        "run",
+        lambda *args, **kwargs: SimpleNamespace(returncode=1),
+    )
+    with pytest.raises(pytest.skip.Exception, match="Docker daemon"):
+        conftest.pytest_runtest_setup(item)
+
+    with monkeypatch.context() as patch:
+        patch.setattr(
+            Path,
+            "read_text",
+            lambda self, encoding: "fetch(`${API}/videos.json`) fetch(`${API}/videos/`)",
+        )
+        with pytest.raises(AssertionError):
+            static_tests.test_index_uses_the_same_video_urls_as_the_nginx_configuration()