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enum_test.exs
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enum_test.exs
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defmodule OpenApiSpex.Cast.EnumTest do
use ExUnit.Case
alias OpenApiSpex.{Cast, Schema}
alias OpenApiSpex.Cast.Error
defp cast(ctx), do: Cast.cast(ctx)
defmodule User do
require OpenApiSpex
alias __MODULE__
defstruct [:age]
def schema() do
%OpenApiSpex.Schema{
type: :object,
required: [:age],
properties: %{
age: %Schema{type: :integer},
},
enum: [%User{age: 32}, %User{age: 45}],
"x-struct": __MODULE__
}
end
end
describe "Enum of strings" do
setup do
{:ok, %{schema: %Schema{type: :string, enum: ["one"]}}}
end
test "error on invalid string", %{schema: schema} do
assert {:error, [error]} = cast(schema: schema, value: "two")
assert %Error{} = error
assert error.reason == :invalid_enum
end
test "OK on valid string", %{schema: schema} do
assert {:ok, "one"} = cast(schema: schema, value: "one")
end
end
describe "Enum of atoms" do
setup do
{:ok, %{schema: %Schema{type: :string, enum: [:one, :two, :three]}}}
end
test "string will be converted to atom", %{schema: schema} do
assert {:ok, :three} = cast(schema: schema, value: "three")
end
test "error on invalid string", %{schema: schema} do
assert {:error, [error]} = cast(schema: schema, value: "four")
assert %Error{} = error
assert error.reason == :invalid_enum
end
end
describe "Enum with explicit schema" do
test "converts string keyed map to struct" do
assert {:ok, %User{age: 32}} = cast(schema: User.schema(), value: %{"age" => 32})
end
test "Must be a valid enum value" do
assert {:error, [error]} = cast(schema: User.schema(), value: %{"age" => 33})
assert %Error{} = error
assert error.reason == :invalid_enum
end
end
describe "Enum without explicit schema" do
setup do
schema = %Schema{
type: :object,
enum: [%{age: 55}, %{age: 66}, %{age: 77}]
}
{:ok, %{schema: schema}}
end
test "casts from string keyed map", %{schema: schema} do
assert {:ok, %{age: 55}} = cast(value: %{"age" => 55}, schema: schema)
end
test "value must be a valid enum value", %{schema: schema} do
assert {:error, [error]} = cast(value: %{"age" => 56}, schema: schema)
assert %Error{} = error
assert error.reason == :invalid_enum
end
end
end

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