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diff --git a/lib/open_api_spex/cast/array.ex b/lib/open_api_spex/cast/array.ex
index 83dc113..4dd07af 100644
--- a/lib/open_api_spex/cast/array.ex
+++ b/lib/open_api_spex/cast/array.ex
@@ -1,70 +1,72 @@
defmodule OpenApiSpex.Cast.Array do
@moduledoc false
alias OpenApiSpex.Cast
- def cast(%{value: []}), do: {:ok, []}
+ def cast(%{value: [], schema: %{minItems: nil}}) do
+ {:ok, []}
+ end
def cast(%{value: items} = ctx) when is_list(items) do
case cast_array(ctx) do
{:cast, ctx} -> cast(ctx)
{items, []} -> Cast.ok(%{ctx | value: items})
{_, errors} -> {:error, errors}
end
end
def cast(ctx),
do: Cast.error(ctx, {:invalid_type, :array})
## Private functions
defp cast_array(%{value: value, schema: %{minItems: minimum}} = ctx) when is_integer(minimum) do
item_count = Enum.count(value)
if item_count < minimum do
Cast.error(ctx, {:min_items, minimum, item_count})
else
Cast.success(ctx, :minItems)
end
end
defp cast_array(%{value: value, schema: %{maxItems: maximum}} = ctx) when is_integer(maximum) do
item_count = Enum.count(value)
if item_count > maximum do
Cast.error(ctx, {:max_items, maximum, item_count})
else
Cast.success(ctx, :maxItems)
end
end
defp cast_array(%{value: value, schema: %{uniqueItems: true}} = ctx) do
unique_size =
value
|> MapSet.new()
|> MapSet.size()
if unique_size != Enum.count(value) do
Cast.error(ctx, {:unique_items})
else
Cast.success(ctx, :uniqueItems)
end
end
defp cast_array(%{value: items} = ctx) do
cast_results =
items
|> Enum.with_index()
|> Enum.map(fn {item, index} ->
path = [index | ctx.path]
Cast.cast(%{ctx | value: item, schema: ctx.schema.items, path: path})
end)
errors =
for({:error, errors} <- cast_results, do: errors)
|> Enum.concat()
items = for {:ok, item} <- cast_results, do: item
{items, errors}
end
end
diff --git a/lib/open_api_spex/cast/error.ex b/lib/open_api_spex/cast/error.ex
index 1a62c2d..c480519 100644
--- a/lib/open_api_spex/cast/error.ex
+++ b/lib/open_api_spex/cast/error.ex
@@ -1,408 +1,408 @@
defmodule OpenApiSpex.Cast.Error do
alias OpenApiSpex.TermType
@type all_of_error :: {:all_of, [String.t()]}
@type any_of_error :: {:any_of, [String.t()]}
@type exclusive_max_error :: {:exclusive_max, non_neg_integer(), non_neg_integer()}
@type exclusive_min_error :: {:exclusive_min, non_neg_integer(), non_neg_integer()}
@type invalid_enum_error :: {:invalid_enum}
@type invalid_format_error :: {:invalid_format, any()}
@type invalid_schema_error :: {:invalid_schema_type}
@type invalid_type_error :: {:invalid_type, String.t() | atom()}
@type max_items_error :: {:max_items, non_neg_integer(), non_neg_integer()}
@type max_length_error :: {:max_length, non_neg_integer()}
@type max_properties_error :: {:max_properties, non_neg_integer(), non_neg_integer()}
@type maximum_error :: {:maximum, integer(), integer()}
@type min_items_error :: {:min_items, non_neg_integer(), non_neg_integer()}
@type min_length_error :: {:min_length, non_neg_integer()}
@type min_properties_error :: {:min_properties, non_neg_integer(), non_neg_integer()}
@type minimum_error :: {:minimum, integer(), integer()}
@type missing_field_error :: {:missing_field, String.t() | atom()}
@type missing_header_error :: {:missing_header, String.t() | atom()}
@type invalid_header_error :: {:invalid_header, String.t() | atom()}
@type multiple_of_error :: {:multiple_of, non_neg_integer(), non_neg_integer()}
@type no_value_for_discriminator_error :: {:no_value_for_discriminator, String.t() | atom()}
@type invalid_discriminator_value_error :: {:invalid_discriminator_value, String.t() | atom()}
@type null_value_error :: {:null_value}
@type one_of_error :: {:one_of, [String.t()]}
@type unexpected_field_error :: {:unexpected_field, String.t() | atom()}
@type unique_items_error :: {:unique_items}
@type reason ::
:all_of
| :any_of
| :invalid_schema_type
| :exclusive_max
| :exclusive_min
| :invalid_discriminator_value
| :invalid_enum
| :invalid_format
| :invalid_type
| :max_items
| :max_length
| :max_properties
| :maximum
| :min_items
| :min_length
| :minimum
| :missing_field
| :missing_header
| :invalid_header
| :multiple_of
| :no_value_for_discriminator
| :null_value
| :one_of
| :unexpected_field
| :unique_items
@type args ::
all_of_error()
| any_of_error()
| invalid_schema_error()
| exclusive_max_error()
| exclusive_min_error()
| invalid_discriminator_value_error()
| invalid_enum_error()
| invalid_format_error()
| invalid_type_error()
| max_items_error()
| max_length_error()
| max_properties_error()
| maximum_error()
| min_items_error()
| min_length_error()
| min_properties_error()
| minimum_error()
| missing_field_error()
| missing_header_error()
| invalid_header_error()
| multiple_of_error()
| no_value_for_discriminator_error()
| null_value_error()
| one_of_error()
| unexpected_field_error()
| unique_items_error()
@type t :: %__MODULE__{
reason: reason(),
value: any(),
format: String.t(),
name: String.t(),
path: list(String.t()),
length: non_neg_integer(),
meta: map()
}
defstruct reason: nil,
value: nil,
format: nil,
type: nil,
name: nil,
path: [],
length: 0,
meta: %{}
@spec new(map(), args()) :: %__MODULE__{}
def new(ctx, {:invalid_schema_type}) do
%__MODULE__{reason: :invalid_schema_type, type: ctx.schema.type}
|> add_context_fields(ctx)
end
def new(ctx, {:null_value}) do
type = ctx.schema && ctx.schema.type
%__MODULE__{reason: :null_value, type: type}
|> add_context_fields(ctx)
end
def new(ctx, {:all_of, schema_detail}) do
%__MODULE__{reason: :all_of, meta: %{invalid_schema: schema_detail}}
|> add_context_fields(ctx)
end
def new(ctx, {:any_of, schema_names}) do
%__MODULE__{reason: :any_of, meta: %{failed_schemas: schema_names}}
|> add_context_fields(ctx)
end
def new(ctx, {:one_of, schema_names}) do
%__MODULE__{reason: :one_of, meta: %{failed_schemas: schema_names}}
|> add_context_fields(ctx)
end
def new(ctx, {:min_length, length}) do
%__MODULE__{reason: :min_length, length: length}
|> add_context_fields(ctx)
end
def new(ctx, {:max_length, length}) do
%__MODULE__{reason: :max_length, length: length}
|> add_context_fields(ctx)
end
def new(ctx, {:multiple_of, multiple, item_count}) do
%__MODULE__{reason: :multiple_of, length: multiple, value: item_count}
|> add_context_fields(ctx)
end
def new(ctx, {:unique_items}) do
%__MODULE__{reason: :unique_items}
|> add_context_fields(ctx)
end
def new(ctx, {:min_items, min_items, item_count}) do
%__MODULE__{reason: :min_items, length: min_items, value: item_count}
|> add_context_fields(ctx)
end
def new(ctx, {:max_items, max_items, value}) do
%__MODULE__{reason: :max_items, length: max_items, value: value}
|> add_context_fields(ctx)
end
def new(ctx, {:minimum, minimum, value}) do
%__MODULE__{reason: :minimum, length: minimum, value: value}
|> add_context_fields(ctx)
end
def new(ctx, {:maximum, maximum, value}) do
%__MODULE__{reason: :maximum, length: maximum, value: value}
|> add_context_fields(ctx)
end
def new(ctx, {:exclusive_min, exclusive_min, value}) do
%__MODULE__{reason: :exclusive_min, length: exclusive_min, value: value}
|> add_context_fields(ctx)
end
def new(ctx, {:exclusive_max, exclusive_max, value}) do
%__MODULE__{reason: :exclusive_max, length: exclusive_max, value: value}
|> add_context_fields(ctx)
end
def new(ctx, {:invalid_type, type}) do
%__MODULE__{reason: :invalid_type, type: type}
|> add_context_fields(ctx)
end
def new(ctx, {:invalid_format, format}) do
%__MODULE__{reason: :invalid_format, format: format}
|> add_context_fields(ctx)
end
def new(ctx, {:invalid_enum}) do
%__MODULE__{reason: :invalid_enum}
|> add_context_fields(ctx)
end
def new(ctx, {:unexpected_field, name}) do
%__MODULE__{reason: :unexpected_field, name: name}
|> add_context_fields(ctx)
end
def new(ctx, {:missing_field, name}) do
%__MODULE__{reason: :missing_field, name: name}
|> add_context_fields(ctx)
end
def new(ctx, {:missing_header, name}) do
%__MODULE__{reason: :missing_header, name: name}
|> add_context_fields(ctx)
end
def new(ctx, {:invalid_header, name}) do
%__MODULE__{reason: :invalid_header, name: name}
|> add_context_fields(ctx)
end
def new(ctx, {:no_value_for_discriminator, field}) do
%__MODULE__{reason: :no_value_for_discriminator, name: field}
|> add_context_fields(ctx)
end
def new(ctx, {:invalid_discriminator_value, field}) do
%__MODULE__{reason: :invalid_discriminator_value, name: field}
|> add_context_fields(ctx)
end
def new(ctx, {:max_properties, max_properties, property_count}) do
%__MODULE__{
reason: :max_properties,
meta: %{max_properties: max_properties, property_count: property_count}
}
|> add_context_fields(ctx)
end
def new(ctx, {:min_properties, min_properties, property_count}) do
%__MODULE__{
reason: :min_properties,
meta: %{min_properties: min_properties, property_count: property_count}
}
|> add_context_fields(ctx)
end
@spec message(t()) :: String.t()
def message(%{reason: :invalid_schema_type, type: type}) do
"Invalid schema.type. Got: #{inspect(type)}"
end
def message(%{reason: :null_value} = error) do
case error.type do
nil -> "null value"
type -> "null value where #{type} expected"
end
end
def message(%{reason: :all_of, meta: %{invalid_schema: invalid_schema}}) do
"Failed to cast value as #{invalid_schema}. Value must be castable using `allOf` schemas listed."
end
def message(%{reason: :any_of, meta: %{failed_schemas: failed_schemas}}) do
"Failed to cast value using any of: #{failed_schemas}"
end
def message(%{reason: :one_of, meta: %{failed_schemas: failed_schemas}}) do
"Failed to cast value to one of: #{failed_schemas}"
end
def message(%{reason: :min_length, length: length}) do
"String length is smaller than minLength: #{length}"
end
def message(%{reason: :max_length, length: length}) do
"String length is larger than maxLength: #{length}"
end
def message(%{reason: :unique_items}) do
"Array items must be unique"
end
- def message(%{reason: :min_items, length: min, value: count}) do
- "Array length #{count} is smaller than minItems: #{min}"
+ def message(%{reason: :min_items, length: min, value: array}) do
+ "Array length #{length(array)} is smaller than minItems: #{min}"
end
- def message(%{reason: :max_items, length: max, value: count}) do
- "Array length #{count} is larger than maxItems: #{max}"
+ def message(%{reason: :max_items, length: max, value: array}) do
+ "Array length #{length(array)} is larger than maxItems: #{max}"
end
def message(%{reason: :multiple_of, length: multiple, value: count}) do
"#{count} is not a multiple of #{multiple}"
end
def message(%{reason: :exclusive_max, length: max, value: value})
when value >= max do
"#{value} is larger than exclusive maximum #{max}"
end
def message(%{reason: :maximum, length: max, value: value})
when value > max do
"#{value} is larger than inclusive maximum #{max}"
end
def message(%{reason: :exclusive_min, length: min, value: value})
when value <= min do
"#{value} is smaller than exclusive minimum #{min}"
end
def message(%{reason: :minimum, length: min, value: value})
when value < min do
"#{value} is smaller than inclusive minimum #{min}"
end
def message(%{reason: :invalid_type, type: type, value: value}) do
"Invalid #{type}. Got: #{TermType.type(value)}"
end
def message(%{reason: :invalid_format, format: format}) do
"Invalid format. Expected #{inspect(format)}"
end
def message(%{reason: :invalid_enum}) do
"Invalid value for enum"
end
def message(%{reason: :polymorphic_failed, type: polymorphic_type}) do
"Failed to cast to any schema in #{polymorphic_type}"
end
def message(%{reason: :unexpected_field, name: name}) do
"Unexpected field: #{safe_string(name)}"
end
def message(%{reason: :no_value_for_discriminator, name: field}) do
"Value used as discriminator for `#{field}` matches no schemas"
end
def message(%{reason: :invalid_discriminator_value, name: field}) do
"No value provided for required discriminator `#{field}`"
end
def message(%{reason: :unknown_schema, name: name}) do
"Unknown schema: #{name}"
end
def message(%{reason: :missing_field, name: name}) do
"Missing field: #{name}"
end
def message(%{reason: :missing_header, name: name}) do
"Missing header: #{name}"
end
def message(%{reason: :invalid_header, name: name}) do
"Invalid value for header: #{name}"
end
def message(%{reason: :max_properties, meta: meta}) do
"Object property count #{meta.property_count} is greater than maxProperties: #{
meta.max_properties
}"
end
def message(%{reason: :min_properties, meta: meta}) do
"Object property count #{meta.property_count} is less than minProperties: #{
meta.min_properties
}"
end
def message_with_path(error) do
prepend_path(error, message(error))
end
def path_to_string(%{path: path} = _error) do
path =
if path == [] do
""
else
path |> Enum.map(&to_string/1) |> Path.join()
end
"/" <> path
end
defp add_context_fields(error, ctx) do
%{error | path: Enum.reverse(ctx.path), value: ctx.value}
end
defp prepend_path(error, message) do
path =
case error.path do
[] -> "#"
_ -> "#" <> path_to_string(error)
end
path <> ": " <> message
end
defp safe_string(string) do
to_string(string) |> String.slice(0..39)
end
end
defimpl String.Chars, for: OpenApiSpex.Cast.Error do
def to_string(error) do
OpenApiSpex.Cast.Error.message(error)
end
end
diff --git a/test/cast/array_test.exs b/test/cast/array_test.exs
index ac0721f..a5f300c 100644
--- a/test/cast/array_test.exs
+++ b/test/cast/array_test.exs
@@ -1,65 +1,70 @@
defmodule OpenApiSpec.Cast.ArrayTest do
use ExUnit.Case
alias OpenApiSpex.Cast.{Array, Error}
alias OpenApiSpex.{Cast, Schema}
defp cast(map), do: Array.cast(struct(Cast, map))
describe "cast/4" do
test "array" do
schema = %Schema{type: :array}
assert cast(value: [], schema: schema) == {:ok, []}
assert cast(value: [1, 2, 3], schema: schema) == {:ok, [1, 2, 3]}
assert cast(value: ["1", "2", "3"], schema: schema) == {:ok, ["1", "2", "3"]}
assert {:error, [error]} = cast(value: %{}, schema: schema)
assert %Error{} = error
assert error.reason == :invalid_type
assert error.value == %{}
end
test "with maxItems" do
schema = %Schema{type: :array, maxItems: 2}
assert cast(value: [1, 2], schema: schema) == {:ok, [1, 2]}
assert {:error, [error]} = cast(value: [1, 2, 3], schema: schema)
assert %Error{} = error
assert error.reason == :max_items
assert error.value == [1, 2, 3]
end
test "with minItems" do
schema = %Schema{type: :array, minItems: 2}
assert cast(value: [1, 2], schema: schema) == {:ok, [1, 2]}
assert {:error, [error]} = cast(value: [1], schema: schema)
assert %Error{} = error
assert error.reason == :min_items
assert error.value == [1]
+
+ # Test for #179, "minLength validation ignores empty array"
+ assert {:error, [%Error{reason: :min_items, value: []}]} = cast(value: [], schema: schema)
+ # Negative test, check that minItems: 0 allows an empty array
+ assert cast(value: [], schema: %Schema{type: :array, minItems: 0}) == {:ok, []}
end
test "with uniqueItems" do
schema = %Schema{type: :array, uniqueItems: true}
assert cast(value: [1, 2], schema: schema) == {:ok, [1, 2]}
assert {:error, [error]} = cast(value: [1, 1], schema: schema)
assert %Error{} = error
assert error.reason == :unique_items
assert error.value == [1, 1]
end
test "array with items schema" do
items_schema = %Schema{type: :integer}
schema = %Schema{type: :array, items: items_schema}
assert cast(value: [], schema: schema) == {:ok, []}
assert cast(value: [1, 2, 3], schema: schema) == {:ok, [1, 2, 3]}
assert cast(value: ["1", "2", "3"], schema: schema) == {:ok, [1, 2, 3]}
assert {:error, [error]} = cast(value: [1, "two"], schema: schema)
assert %Error{} = error
assert error.reason == :invalid_type
assert error.value == "two"
assert error.path == [1]
end
end
end
diff --git a/test/cast/error_test.exs b/test/cast/error_test.exs
index dfe35e8..738cb11 100644
--- a/test/cast/error_test.exs
+++ b/test/cast/error_test.exs
@@ -1,11 +1,26 @@
defmodule OpenApiSpex.Cast.ErrorTest do
use ExUnit.Case
alias OpenApiSpex.Cast.Error
describe "path_to_string/1" do
test "with empty path" do
error = %Error{path: []}
assert Error.path_to_string(error) == "/"
end
end
+
+ describe "message" do
+ test "it returns the correct error message for :min_items errors" do
+ assert "Array length 0 is smaller than minItems: 1" ==
+ Error.message(%{reason: :min_items, length: 1, value: []})
+
+ assert "Array length 1 is smaller than minItems: 2" ==
+ Error.message(%{reason: :min_items, length: 2, value: ["one"]})
+ end
+
+ test "it returns the correct error message for :max_items errors" do
+ assert "Array length 2 is larger than maxItems: 1" ==
+ Error.message(%{reason: :max_items, length: 1, value: ["one", "two"]})
+ end
+ end
end

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