Fixed ZonString early-failure behavior

CHANGELOG.md

@@ -12,6 +12,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Implemented non-default validation
 - Added dimension tests for `ZonString`
 - Added `examples` folder
+- Added `early failure` mechanism to prevent validation on objects after the first validation error
 
 ### Changed
 - Moved everything into a single file to combat circular reference issues

tests/str_test.py

@@ -8,11 +8,6 @@ def validator():
     return zon.string()
 
 
-@pytest.fixture
-def fail_fast_validator():
-    return zon.string(fast_termination=True)
-
-
 def test_str_validate(validator):
     assert validator.validate("1")
 

tests/zon_test.py

@@ -0,0 +1,32 @@
+"""
+Tests related to core Zon functionality that is not necessarily bound to any specific Zon implementation.
+"""
+
+import pytest
+
+import zon
+
+@pytest.fixture
+def normal_validator():
+    # This is just for demonstration purposes
+    return zon.string(fast_termination=False).length(3).max(2)
+
+@pytest.fixture
+def fail_fast_validator():
+    # This is just for demonstration purposes
+    return zon.string(fast_termination=True).length(3).max(2)
+
+
+def test_fail_fast(normal_validator, fail_fast_validator):
+
+    test_input = "12345"
+
+    with pytest.raises(zon.error.ZonError) as fail_fast_result:
+        fail_fast_validator.validate(test_input)
+
+    assert len(fail_fast_result.value.issues) == 1
+
+    with pytest.raises(zon.error.ZonError) as normal_result:
+        normal_validator.validate(test_input)
+
+    assert len(normal_result.value.issues) == 2

zon/__init__.py

@@ -63,7 +63,7 @@ def __init__(self, name: str, fn: Callable[[T], bool], *, additional_data: dict[
         self.name = name
         self.additional_data = additional_data
 
-    def check(self, data: Any, ctx: ValidationContext):
+    def check(self, data: Any, ctx: ValidationContext) -> bool:
         valid = self.fn(data)
 
         if not valid:
@@ -75,6 +75,7 @@ def check(self, data: Any, ctx: ValidationContext):
                 )
             )
 
+        return valid
 
 class Zon(ABC):
     """
@@ -132,6 +133,7 @@ def _validate(self, data: T) -> bool:
         ctx = ValidationContext()
 
         def check_early_termination():
+            print(self._terminate_early, ctx)
             if self._terminate_early and ctx.dirty:
                 ctx.raise_error()
 
@@ -267,7 +269,7 @@ def string(*, fast_termination=False) -> ZonString:
     Returns:
         ZonString: The string data validator.
     """
-    return ZonString(fast_termination=fast_termination)
+    return ZonString(terminate_early=fast_termination)
 
 
 class ZonString(ZonContainer):