feat(utils/is_oss): Add a function to check oss deployment mode (#44)

* feat(utils/is_oss): Add a function to check deployment mode

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

---------

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

Author: gagantrivedi

src/common/core/utils.py

@@ -37,6 +37,10 @@ def is_saas() -> bool:
     return pathlib.Path("./SAAS_DEPLOYMENT").exists()
 
 
+def is_oss() -> bool:
+    return not (is_enterprise() or is_saas())
+
+
 @lru_cache()
 def has_email_provider() -> bool:
     match settings.EMAIL_BACKEND:

tests/unit/common/core/test_utils.py

@@ -10,6 +10,7 @@
     get_version_info,
     has_email_provider,
     is_enterprise,
+    is_oss,
     is_saas,
 )
 
@@ -25,6 +26,27 @@ def clear_lru_caches() -> Generator[None, None, None]:
     is_saas.cache_clear()
 
 
+def test__is_oss_for_enterprise_returns_false(fs: FakeFilesystem) -> None:
+    # Given
+    fs.create_file("./ENTERPRISE_VERSION")
+
+    # Then
+    assert is_oss() is False
+
+
+def test__is_oss_for_saas_returns_false(fs: FakeFilesystem) -> None:
+    # Given
+    fs.create_file("./SAAS_DEPLOYMENT")
+
+    # Then
+    assert is_oss() is False
+
+
+def test__is_oss_for_oss_returns_true(fs: FakeFilesystem) -> None:
+    # Then
+    assert is_oss() is True
+
+
 def test_get_version_info(fs: FakeFilesystem) -> None:
     # Given
     expected_manifest_contents = {