test: 6 parallel agents — +40 test files across core, agent, translate, services, API routes, dataset_review. core 100%, agent 100%, services 100%, translate plugin mostly done. Pending: ~10 minor failures to fix

backend/tests/plugins/translate/test_dictionary_validation.py

@@ -0,0 +1,75 @@
+# #region Test.DictionaryValidation [C:2] [TYPE Module] [SEMANTICS test, translate, validation, bcp47]
+# @BRIEF Tests for dictionary_validation.py — _validate_bcp47.
+# @RELATION BINDS_TO -> [_validate_bcp47]
+# @TEST_CONTRACT: _validate_bcp47 -> None | raises ValueError on invalid tag
+# @TEST_EDGE: empty_tag -> ValueError
+# @TEST_EDGE: invalid_format -> ValueError
+# @TEST_EDGE: valid_format -> None
+
+import sys
+from pathlib import Path
+sys.path.insert(0, str(Path(__file__).parent.parent.parent.parent / "src"))
+
+import os
+os.environ.setdefault("SECRET_KEY", "test-secret-key-for-testing")
+os.environ.setdefault("DATABASE_URL", "sqlite:///:memory:")
+os.environ.setdefault("AUTH_DATABASE_URL", "sqlite:///:memory:")
+
+import pytest
+
+from src.plugins.translate.dictionary_validation import _validate_bcp47
+
+
+class TestValidateBcp47:
+    """_validate_bcp47 — BCP-47 language tag validation."""
+
+    def test_valid_basic_tag(self):
+        """Simple language code like 'en' passes."""
+        _validate_bcp47("en", "language")  # no error
+
+    def test_valid_region_tag(self):
+        """Tag with region like 'zh-CN' passes."""
+        _validate_bcp47("zh-CN", "language")
+
+    def test_valid_script_tag(self):
+        """Tag with script like 'zh-Hans' passes."""
+        _validate_bcp47("zh-Hans", "language")
+
+    def test_valid_multi_subtag(self):
+        """Complex tag like 'sr-Latn-RS' passes."""
+        _validate_bcp47("sr-Latn-RS", "language")
+
+    def test_empty_string_raises(self):
+        """Empty tag raises ValueError."""
+        with pytest.raises(ValueError, match="must be a non-empty"):
+            _validate_bcp47("", "language")
+
+    def test_whitespace_only_raises(self):
+        """Whitespace-only tag raises ValueError."""
+        with pytest.raises(ValueError, match="must be a non-empty"):
+            _validate_bcp47("   ", "language")
+
+    def test_none_raises(self):
+        """None tag raises ValueError."""
+        with pytest.raises(ValueError, match="must be a non-empty"):
+            _validate_bcp47(None, "language")  # type: ignore[arg-type]
+
+    def test_invalid_format_raises(self):
+        """Tag with invalid characters raises ValueError."""
+        with pytest.raises(ValueError, match="not a valid BCP-47"):
+            _validate_bcp47("en@utf8", "language")
+
+    def test_invalid_numeric_start_raises(self):
+        """Tag starting with a number raises ValueError."""
+        with pytest.raises(ValueError, match="not a valid BCP-47"):
+            _validate_bcp47("123", "language")
+
+    def test_error_message_includes_field_name(self):
+        """Error message includes the field_name parameter."""
+        with pytest.raises(ValueError, match="source_language"):
+            _validate_bcp47("", "source_language")
+
+    def test_strips_whitespace(self):
+        """Whitespace around tag is stripped."""
+        _validate_bcp47("  en  ", "language")  # no error after strip
+# #endregion Test.DictionaryValidation