tests for set,frozenset,list,dict,typed_dict

Author: samuelcolvin

python/pydantic_core/core_schema.py

@@ -2854,7 +2854,7 @@ def typed_dict_field(
 
     Args:
         schema: The schema to use for the field
-        required: Whether the field is required
+        required: Whether the field is required, otherwise uses the value from `total` on the typed dict
         validation_alias: The alias(es) to use to find the field in the validation data
         serialization_alias: The alias to use as a key when serializing
         serialization_exclude: Whether to exclude the field when serializing
@@ -2930,7 +2930,7 @@ class MyTypedDict(TypedDict):
         ref: optional unique identifier of the schema, used to reference the schema in other places
         metadata: Any other information you want to include with the schema, not used by pydantic-core
         extra_behavior: The extra behavior to use for the typed dict
-        total: Whether the typed dict is total
+        total: Whether the typed dict is total, otherwise uses `typed_dict_total` from config
         populate_by_name: Whether the typed dict should populate by name
         serialization: Custom serialization schema
     """

src/errors/line_error.rs

@@ -146,11 +146,11 @@ impl ValLineError {
         self
     }
 
-    pub fn last_loc_item(&self) -> Option<&LocItem> {
+    pub fn first_loc_item(&self) -> Option<&LocItem> {
         match &self.location {
             Location::Empty => None,
-            // first because order is reversed
-            Location::List(loc_items) => loc_items.first(),
+            // last because order is reversed
+            Location::List(loc_items) => loc_items.last(),
         }
     }
 }

src/errors/mod.rs

@@ -1,4 +1,3 @@
-use crate::validators::ValidationState;
 use pyo3::prelude::*;
 
 mod line_error;
@@ -31,40 +30,3 @@ pub fn py_err_string(py: Python, err: PyErr) -> String {
         Err(_) => "Unknown Error".to_string(),
     }
 }
-
-/// If we're in `allow_partial` mode, whether all errors occurred in the last element of the input.
-pub fn sequence_valid_as_partial(state: &ValidationState, input_length: usize, errors: &[ValLineError]) -> bool {
-    if !state.extra().allow_partial {
-        return false;
-    }
-    // for the error to be in the last element, the index of all errors must be `input_length - 1`
-    let last_index = (input_length - 1) as i64;
-    errors.iter().all(|error| {
-        if let Some(LocItem::I(loc_index)) = error.last_loc_item() {
-            *loc_index == last_index
-        } else {
-            false
-        }
-    })
-}
-
-/// If we're in `allow_partial` mode, whether all errors occurred in the last  value of the input.
-pub fn mapping_valid_as_partial(
-    state: &ValidationState,
-    opt_last_key: Option<impl Into<LocItem>>,
-    errors: &[ValLineError],
-) -> bool {
-    if !state.extra().allow_partial {
-        return false;
-    }
-    let Some(last_key) = opt_last_key.map(Into::into) else {
-        return false;
-    };
-    errors.iter().all(|error| {
-        if let Some(loc_item) = error.last_loc_item() {
-            loc_item == &last_key
-        } else {
-            false
-        }
-    })
-}

src/input/return_enums.rs

@@ -17,8 +17,7 @@ use pyo3::types::{PyBytes, PyComplex, PyFloat, PyFrozenSet, PyIterator, PyMappin
 use serde::{ser::Error, Serialize, Serializer};
 
 use crate::errors::{
-    py_err_string, sequence_valid_as_partial, ErrorType, ErrorTypeDefaults, InputValue, ToErrorValue, ValError,
-    ValLineError, ValResult,
+    py_err_string, ErrorType, ErrorTypeDefaults, InputValue, LocItem, ToErrorValue, ValError, ValLineError, ValResult,
 };
 use crate::py_gc::PyGcTraverse;
 use crate::tools::{extract_i64, extract_int, new_py_string, py_err};
@@ -131,7 +130,6 @@ pub(crate) fn validate_iter_to_vec<'py>(
     let mut errors: Vec<ValLineError> = Vec::new();
     let mut index = 0;
     for item_result in iter {
-        index += 1;
         let item = item_result.map_err(|e| any_next_error!(py, e, max_length_check.input, index))?;
         match validator.validate(py, item.borrow_input(), state) {
             Ok(item) => {
@@ -148,6 +146,7 @@ pub(crate) fn validate_iter_to_vec<'py>(
             Err(ValError::Omit) => (),
             Err(err) => return Err(err),
         }
+        index += 1;
     }
 
     if errors.is_empty() || sequence_valid_as_partial(state, index, &errors) {
@@ -157,6 +156,23 @@ pub(crate) fn validate_iter_to_vec<'py>(
     }
 }
 
+/// If we're in `allow_partial` mode, whether all errors occurred in the last element of the input.
+pub fn sequence_valid_as_partial(state: &ValidationState, input_length: usize, errors: &[ValLineError]) -> bool {
+    if !state.extra().allow_partial {
+        false
+    } else {
+        // for the error to be in the last element, the index of all errors must be `input_length - 1`
+        let last_index = (input_length - 1) as i64;
+        errors.iter().all(|error| {
+            if let Some(LocItem::I(loc_index)) = error.first_loc_item() {
+                *loc_index == last_index
+            } else {
+                false
+            }
+        })
+    }
+}
+
 pub trait BuildSet {
     fn build_add(&self, item: PyObject) -> PyResult<()>;
 
@@ -202,7 +218,6 @@ pub(crate) fn validate_iter_to_set<'py>(
     let mut errors: Vec<ValLineError> = Vec::new();
     let mut index = 0;
     for item_result in iter {
-        index += 1;
         let item = item_result.map_err(|e| any_next_error!(py, e, input, index))?;
         match validator.validate(py, item.borrow_input(), state) {
             Ok(item) => {
@@ -233,6 +248,7 @@ pub(crate) fn validate_iter_to_set<'py>(
         if fail_fast && !errors.is_empty() {
             return Err(ValError::LineErrors(errors));
         }
+        index += 1;
     }
 
     if errors.is_empty() || sequence_valid_as_partial(state, index, &errors) {

src/validators/dict.rs

@@ -3,7 +3,7 @@ use pyo3::prelude::*;
 use pyo3::types::PyDict;
 
 use crate::build_tools::is_strict;
-use crate::errors::{sequence_valid_as_partial, LocItem, ValError, ValLineError, ValResult};
+use crate::errors::{LocItem, ValError, ValLineError, ValResult};
 use crate::input::BorrowInput;
 use crate::input::ConsumeIterator;
 use crate::input::{Input, ValidatedDict};
@@ -109,10 +109,13 @@ where
     fn consume_iterator(self, iterator: impl Iterator<Item = ValResult<(Key, Value)>>) -> ValResult<PyObject> {
         let output = PyDict::new_bound(self.py);
         let mut errors: Vec<ValLineError> = Vec::new();
-        let mut input_length = 0;
+        // this should only be set to if:
+        // we get errors in a value, there are no previous errors, and no items come after that
+        // e.g. if we get errors just in the last value
+        let mut errors_in_last = false;
 
         for item_result in iterator {
-            input_length += 1;
+            errors_in_last = false;
             let (key, value) = item_result?;
             let output_key = match self.key_validator.validate(self.py, key.borrow_input(), self.state) {
                 Ok(value) => Some(value),
@@ -127,22 +130,23 @@ where
                 Err(err) => return Err(err),
             };
             let output_value = match self.value_validator.validate(self.py, value.borrow_input(), self.state) {
-                Ok(value) => Some(value),
+                Ok(value) => value,
                 Err(ValError::LineErrors(line_errors)) => {
+                    errors_in_last = errors.is_empty();
                     for err in line_errors {
                         errors.push(err.with_outer_location(key.clone()));
                     }
-                    None
+                    continue;
                 }
                 Err(ValError::Omit) => continue,
                 Err(err) => return Err(err),
             };
-            if let (Some(key), Some(value)) = (output_key, output_value) {
-                output.set_item(key, value)?;
+            if let Some(key) = output_key {
+                output.set_item(key, output_value)?;
             }
         }
 
-        if errors.is_empty() || sequence_valid_as_partial(self.state, input_length, &errors) {
+        if errors.is_empty() || (self.state.extra().allow_partial && errors_in_last) {
             let input = self.input;
             length_check!(input, "Dictionary", self.min_length, self.max_length, output);
             Ok(output.into())

src/validators/typed_dict.rs

@@ -6,7 +6,7 @@ use ahash::AHashSet;
 
 use crate::build_tools::py_schema_err;
 use crate::build_tools::{is_strict, schema_or_config, schema_or_config_same, ExtraBehavior};
-use crate::errors::{mapping_valid_as_partial, LocItem};
+use crate::errors::LocItem;
 use crate::errors::{ErrorTypeDefaults, ValError, ValLineError, ValResult};
 use crate::input::BorrowInput;
 use crate::input::ConsumeIterator;
@@ -35,6 +35,7 @@ pub struct TypedDictValidator {
     extras_validator: Option<Box<CombinedValidator>>,
     strict: bool,
     loc_by_alias: bool,
+    allow_partial: bool,
 }
 
 impl BuildValidator for TypedDictValidator {
@@ -124,13 +125,14 @@ impl BuildValidator for TypedDictValidator {
                 required,
             });
         }
-
+        let allow_partial = fields.iter().all(|f| !f.required);
         Ok(Self {
             fields,
             extra_behavior,
             extras_validator,
             strict,
             loc_by_alias: config.get_as(intern!(py, "loc_by_alias"))?.unwrap_or(true),
+            allow_partial,
         }
         .into())
     }
@@ -322,7 +324,7 @@ impl Validator for TypedDictValidator {
             })??;
         }
 
-        if errors.is_empty() || mapping_valid_as_partial(state, dict.last_key(), &errors) {
+        if errors.is_empty() || self.valid_as_partial(state, dict.last_key(), &errors) {
             Ok(output_dict.to_object(py))
         } else {
             Err(ValError::LineErrors(errors))
@@ -333,3 +335,27 @@ impl Validator for TypedDictValidator {
         Self::EXPECTED_TYPE
     }
 }
+
+impl TypedDictValidator {
+    /// If we're in `allow_partial` mode, whether all errors occurred in the last value of the dict.
+    fn valid_as_partial(
+        &self,
+        state: &ValidationState,
+        opt_last_key: Option<impl Into<LocItem>>,
+        errors: &[ValLineError],
+    ) -> bool {
+        if !state.extra().allow_partial || !self.allow_partial {
+            false
+        } else if let Some(last_key) = opt_last_key.map(Into::into) {
+            errors.iter().all(|error| {
+                if let Some(loc_item) = error.first_loc_item() {
+                    loc_item == &last_key
+                } else {
+                    false
+                }
+            })
+        } else {
+            false
+        }
+    }
+}

tests/requirements.txt

@@ -1,6 +1,7 @@
 backports.zoneinfo==0.2.1;python_version<"3.9"
 coverage==7.6.1
 dirty-equals==0.8.0
+inline-snapshot==0.13.3
 hypothesis==6.111.2
 # pandas doesn't offer prebuilt wheels for all versions and platforms we test in CI e.g. aarch64 musllinux
 pandas==2.1.3; python_version >= "3.9" and python_version < "3.13" and implementation_name == "cpython" and platform_machine == 'x86_64'