graphql-query 1.0.1

use super::{
  parse_ast::{
      ArgumentList, FieldDefinitions, SchemaFieldPlaceholder, SchemaInputFieldPlaceholder,
      SchemaInterfacePlaceholder, SchemaObjectPlaceholder, TypeWrapper,
  },
  parser::ParseSdl,
};
use crate::{
  ast::{ASTContext, DefaultIn},
  schema::{
      BuildClientSchema, IntrospectionQuery, Schema, SchemaEnum, SchemaField, SchemaFields, SchemaInterface, SchemaInterfaces, SchemaObject, SchemaPossibleTypes, SchemaScalar, SchemaType, SchemaUnion, TypeRef
  },
};
use bumpalo::collections::Vec;
use hashbrown::{HashMap, HashSet};
use indoc::indoc;

const DEFAULT_SCALARS: [&str; 5] = [
  "String",
  "Int",
  "Float",
  "Boolean",
  "ID",
];

fn assert_parse<'a, T: 'a>(ctx: &'a ASTContext, source: &'a str, expected: T)
where
  T: ParseSdl<'a> + std::fmt::Debug + PartialEq,
{
  assert_eq!(*T::parse(ctx, source).unwrap(), expected);
}

#[test]
fn empty_schema() {
  let ctx = ASTContext::new();
  let mut types = HashMap::new_in(&ctx.arena);
  for scalar in DEFAULT_SCALARS.iter() {
    types.insert(
      *scalar,
      ctx.alloc(crate::schema::SchemaType::Scalar(ctx.alloc(SchemaScalar { name: scalar }))),
    );
  }

  assert_parse(
      &ctx,
      "",
      Schema {
          query_type: None,
          mutation_type: None,
          subscription_type: None,
          types,
      },
  );
}

#[test]
fn schema_definition() {
  let ctx = ASTContext::new();
  let source = indoc! {"
      schema {
          query: Foo
          mutation: Bar
      }

      type Foo {
        foo: String
      }

      type Bar {
        bar: String
      }
  "};


  let foo_field_type = TypeRef::Type("String");
  let foo_field = SchemaField::new(&ctx, "foo", &foo_field_type);
  let mut foo = SchemaObject::new(&ctx, "Foo");
  foo.add_field(&ctx, foo_field);

  let bar_field_type = TypeRef::Type("String");
  let bar_field = SchemaField::new(&ctx, "bar", &bar_field_type);
  let mut bar = SchemaObject::new(&ctx, "Bar");
  bar.add_field(&ctx, bar_field);

  let foo_type = SchemaType::Object(&foo);
  let bar_type = SchemaType::Object(&bar);
  let mut types = HashMap::new_in(&ctx.arena);
  types.insert("Foo", &foo_type);
  types.insert("Bar", &bar_type);

  for scalar in DEFAULT_SCALARS.iter() {
    types.insert(
      *scalar,
      ctx.alloc(crate::schema::SchemaType::Scalar(ctx.alloc(SchemaScalar { name: scalar }))),
    );
  }

  assert_parse(
      &ctx,
      source,
      Schema {
          query_type: Some(&foo),
          mutation_type: Some(&bar),
          subscription_type: None,
          types,
      },
  );
}

#[test]
fn schema_definition_repeated() {
  let ctx = ASTContext::new();
  let source = indoc! {"
      schema {
          query: Foo
      }

      schema {
          query: Bar
      }

      type Foo {
        foo: String
      }

      type Bar {
        bar: String
      }
  "};

  assert_eq!(
      Schema::parse(&ctx, source).unwrap_err().message,
      "Must not specify more than one Schema Definition."
  );
}

#[test]
fn schema_definition_invalid_operation_type() {
  let ctx = ASTContext::new();
  let source = indoc! {"
      schema {
          query: Foo
          doesNotExist: Foo
      }

      type Foo {
        foo: String
      }
  "};

  assert_eq!(
      Schema::parse(&ctx, source).unwrap_err().message,
      "Expected operation type, got Name(\"doesNotExist\")"
  );
}

#[test]
fn schema_definition_non_object_type() {
  let ctx = ASTContext::new();
  let source = indoc! {"
      schema {
          query: Foo
      }

      scalar Foo
  "};

  assert_eq!(
      Schema::parse(&ctx, source).unwrap_err().message,
      "Query root type `Foo` must be an object type."
  );
}

#[test]
fn schema_definition_non_object_non_root_type() {
  let ctx = ASTContext::new();
  let source = indoc! {"
      schema {
          query: Foo
      }

      type Foo {
        foo: String
      }

      # Note that it's fine to have a non-object type with a default root operation type name as long as the schema
      # definition does not include it.
      interface Mutation {
        foo: String
      }
  "};

  assert!(Schema::parse(&ctx, source).is_ok());
}

#[test]
fn object_type_definition() {
  let ctx = ASTContext::new();
  let source = indoc! {"
      type MyType {
          fieldA: String
          fieldB: Int
      }
  "};

  let mut fields = HashMap::new_in(&ctx.arena);
  fields.insert(
      "fieldA",
      SchemaFieldPlaceholder {
          name: "fieldA",
          arguments: ArgumentList::default_in(&ctx.arena),
          output_type: &TypeWrapper::Named("String"),
      },
  );
  fields.insert(
      "fieldB",
      SchemaFieldPlaceholder {
          name: "fieldB",
          arguments: ArgumentList::default_in(&ctx.arena),
          output_type: &TypeWrapper::Named("Int"),
      },
  );

  assert_parse(
      &ctx,
      source,
      SchemaObjectPlaceholder {
          name: "MyType",
          fields: FieldDefinitions { fields },
          interfaces: Vec::new_in(&ctx.arena)
      },
  );
}

#[test]
fn interface_type_definition() {
  let ctx = ASTContext::new();
  let source = indoc! {"
      interface MyInterface {
          fieldA: String
          fieldB: Int
      }
  "};

  let mut fields = HashMap::new_in(&ctx.arena);
  fields.insert(
      "fieldA",
      SchemaFieldPlaceholder {
          name: "fieldA",
          arguments: ArgumentList::default_in(&ctx.arena),
          output_type: &TypeWrapper::Named("String"),
      },
  );
  fields.insert(
      "fieldB",
      SchemaFieldPlaceholder {
          name: "fieldB",
          arguments: ArgumentList::default_in(&ctx.arena),
          output_type: &TypeWrapper::Named("Int"),
      },
  );

  assert_parse(
      &ctx,
      source,
      SchemaInterfacePlaceholder {
          name: "MyInterface",
          fields: FieldDefinitions { fields },
          interfaces: Vec::new_in(&ctx.arena),
          possible_interfaces: Vec::new_in(&ctx.arena),
          possible_types: Vec::new_in(&ctx.arena),
      },
  );
}

#[test]
fn objects_implementing_interfaces() {
  let ctx = ASTContext::new();
  let source = indoc! {"
      type MyType implements MyInt1 & MyInt2 {
          fieldA: String
          fieldB: Int
      }

      interface MyInt1 {
          fieldA: String
      }

      interface MyInt2 {
          fieldB: Int
      }
  "};

  let field_a_type = TypeRef::Type("String");
  let field_a = SchemaField::new(&ctx,"fieldA", &field_a_type);
  let field_b_type = TypeRef::Type("Int");
  let field_b = SchemaField::new(&ctx,"fieldB", &field_b_type);

  let mut interface1 = SchemaInterface::new(&ctx,"MyInt1");
  interface1.add_field(&ctx, field_a.clone());

  let mut interface2 = SchemaInterface::new(&ctx,"MyInt2");
  interface2.add_field(&ctx, field_b.clone());

  let mut obj = SchemaObject::new(&ctx,"MyType");
  obj.add_field(&ctx, field_a.clone());
  obj.add_field(&ctx, field_b.clone());
  obj.add_interface(&ctx, "MyInt1");
  obj.add_interface(&ctx, "MyInt2");

  let mut type_fields = HashMap::new_in(&ctx.arena);
  type_fields.insert("fieldA", &field_a);
  type_fields.insert("fieldB", &field_b);

  interface1.add_possible_type(&ctx, "MyType");
  interface2.add_possible_type(&ctx, "MyType");

  let obj = SchemaType::Object(&obj);
  let interface1 = SchemaType::Interface(&interface1);
  let interface2 = SchemaType::Interface(&interface2);
  let mut types = HashMap::new_in(&ctx.arena);
  types.insert("MyType", &obj);
  types.insert("MyInt1", &interface1);
  types.insert("MyInt2", &interface2);

  for scalar in DEFAULT_SCALARS.iter() {
    types.insert(
      *scalar,
      ctx.alloc(crate::schema::SchemaType::Scalar(ctx.alloc(SchemaScalar { name: scalar }))),
    );
  }

  assert_parse(
      &ctx,
      source,
      Schema {
          query_type: None,
          mutation_type: None,
          subscription_type: None,
          types,
      },
  );
}

#[test]
fn interfaces_implementing_interfaces() {
  let ctx = ASTContext::new();
  let source = indoc! {"
      type MyType implements MyInt1 {
          fieldA: String
          fieldB: Int
      }

      interface MyInt1 implements MyInt2 {
          fieldA: String
          fieldB: Int
      }

      interface MyInt2 {
          fieldB: Int
      }
  "};

  let field_a_type = TypeRef::Type("String");
  let field_a = SchemaField::new(&ctx,"fieldA", &field_a_type);
  let field_b_type = TypeRef::Type("Int");
  let field_b = SchemaField::new(&ctx,"fieldB", &field_b_type);

  let mut interface2 = SchemaInterface::new(&ctx, "MyInt2");
  interface2.add_field(&ctx, field_b.clone());

  let mut interface1 = SchemaInterface::new(&ctx, "MyInt1");
  interface1.add_field(&ctx, field_a.clone());
  interface1.add_field(&ctx, field_b.clone());
  interface1.add_interface(&ctx, "MyInt2");

  let mut obj = SchemaObject::new(&ctx, "MyType");
  obj.add_field(&ctx, field_a);
  obj.add_field(&ctx, field_b);
  obj.add_interface(&ctx, "MyInt1");

  interface1.add_possible_type(&ctx, "MyType");
  //interface2.add_possible_interface(&ctx, "MyInt1");

  let obj = SchemaType::Object(&obj);
  let interface1 = SchemaType::Interface(&interface1);
  let interface2 = SchemaType::Interface(&interface2);
  let mut types = HashMap::new_in(&ctx.arena);
  types.insert("MyType", &obj);
  types.insert("MyInt1", &interface1);
  types.insert("MyInt2", &interface2);

  for scalar in DEFAULT_SCALARS.iter() {
    types.insert(
      *scalar,
      ctx.alloc(crate::schema::SchemaType::Scalar(ctx.alloc(SchemaScalar { name: scalar }))),
    );
  }

  assert_parse(
      &ctx,
      source,
      Schema {
          query_type: None,
          mutation_type: None,
          subscription_type: None,
          types,
      },
  );
}

#[test]
fn unions() {
  let ctx = ASTContext::new();
  let source = indoc! {"
      type MyTypeA {
          fieldA: String
      }

      type MyTypeB {
          fieldB: Int
      }

      union MyUnion = MyTypeA | MyTypeB
  "};

  let field_a_type = TypeRef::Type("String");
  let field_a = SchemaField::new(&ctx,"fieldA", &field_a_type);
  let field_b_type = TypeRef::Type("Int");
  let field_b = SchemaField::new(&ctx,"fieldB", &field_b_type);

  let mut obj_a = SchemaObject::new(&ctx, "MyTypeA");
  obj_a.add_field(&ctx, field_a);

  let mut obj_b = SchemaObject::new(&ctx, "MyTypeB");
  obj_b.add_field(&ctx, field_b);

  let mut union = SchemaUnion::new(&ctx, "MyUnion");
  union.add_possible_type(&ctx, "MyTypeA");
  union.add_possible_type(&ctx, "MyTypeB");

  let obj_a = SchemaType::Object(&obj_a);
  let obj_b = SchemaType::Object(&obj_b);
  let union = SchemaType::Union(&union);
  let mut types = HashMap::new_in(&ctx.arena);
  types.insert("MyTypeA", &obj_a);
  types.insert("MyTypeB", &obj_b);
  types.insert("MyUnion", &union);

  for scalar in DEFAULT_SCALARS.iter() {
    types.insert(
      *scalar,
      ctx.alloc(crate::schema::SchemaType::Scalar(ctx.alloc(SchemaScalar { name: scalar }))),
    );
  }

  assert_parse(
      &ctx,
      source,
      Schema {
          query_type: None,
          mutation_type: None,
          subscription_type: None,
          types,
      },
  );
}

#[test]
fn enum_type_definition() {
  let ctx = ASTContext::new();
  let source = indoc! {"
      enum MyEnum {
          FOO
          BAR
      }
  "};

  let mut values = HashSet::new_in(&ctx.arena);
  values.insert("FOO");
  values.insert("BAR");

  assert_parse(
      &ctx,
      source,
      SchemaEnum {
          name: "MyEnum",
          values,
      },
  );
}

#[test]
fn scalar_type_definition() {
  let ctx = ASTContext::new();
  let source = indoc! {"
      scalar MyScalar
  "};

  assert_parse(&ctx, source, SchemaScalar { name: "MyScalar" });
}

#[test]
fn field_definition() {
  let ctx = ASTContext::new();
  let source = indoc! {"
          fieldA(arg1: Int, arg2: SomeType): String
  "};

  let mut arguments = HashMap::new_in(&ctx.arena);
  arguments.insert(
      "arg1",
      SchemaInputFieldPlaceholder {
          name: "arg1",
          input_type: &TypeWrapper::Named("Int"),
      },
  );
  arguments.insert(
      "arg2",
      SchemaInputFieldPlaceholder {
          name: "arg2",
          input_type: &TypeWrapper::Named("SomeType"),
      },
  );

  let arguments = ArgumentList { arguments };

  assert_parse(
      &ctx,
      source,
      SchemaFieldPlaceholder {
          name: "fieldA",
          arguments,
          output_type: &TypeWrapper::Named("String"),
      },
  );
}

#[test]
fn input_output_type() {
  let ctx = ASTContext::new();
  let source = indoc! {"
      String
  "};

  assert_parse(&ctx, source, TypeWrapper::Named("String"));

  let source = indoc! {"
      String!
  "};

  assert_parse(
      &ctx,
      source,
      TypeWrapper::NonNull(&TypeWrapper::Named("String")),
  );

  let source = indoc! {"
      [String]
  "};

  assert_parse(
      &ctx,
      source,
      TypeWrapper::List(&TypeWrapper::Named("String")),
  );

  let source = indoc! {"
      [String]!
  "};

  assert_parse(
      &ctx,
      source,
      TypeWrapper::NonNull(&TypeWrapper::List(&TypeWrapper::Named("String"))),
  );

  let source = indoc! {"
      [String!]
  "};

  assert_parse(
      &ctx,
      source,
      TypeWrapper::List(&TypeWrapper::NonNull(&TypeWrapper::Named("String"))),
  );

  let source = indoc! {"
      [[String]]
  "};

  assert_parse(
      &ctx,
      source,
      TypeWrapper::List(&TypeWrapper::List(&TypeWrapper::Named("String"))),
  );

  let source = indoc! {"
      [[String!]!]!
  "};

  assert_parse(
      &ctx,
      source,
      TypeWrapper::NonNull(&TypeWrapper::List(&TypeWrapper::NonNull(
          &TypeWrapper::List(&TypeWrapper::NonNull(&TypeWrapper::Named("String"))),
      ))),
  );
}

/// Complete test schema of what we currently support.
/// As opposed to the tests above, this is a full-stack test of actually building
/// a schema, not only building the partial templates used to assemble it.
#[test]
fn kitchen_sink() {
  let ctx = ASTContext::new();
  let source = indoc! {"
        type AllBasicScalars {
            string: String!
            stringOpt: String
            stringList: [String]
            int: Int!
            intOpt: Int
            intList: [Int]
            float: Float!
            floatOpt: Float
            floatList: [Float]
            bool: Boolean!
            boolOpt: Boolean
            boolList: [Boolean]
            id: ID!
            idOpt: ID
            idList: [ID]
        }

        type CircularA {
            other: String
            fieldB: CircularB!
        }

        type CircularB {
            fieldA: CircularA
            other: Int
        }

        union Circulars = CircularA | CircularB

        type FlatImpl implements SomeInterface1 {
            field1: String
        }

        type ListMadness {
            single: [String]
            required: [String]!
            reqReq: [String!]!
            multi: [[String]]
            multiReq: [[String]]!
            multiReqReq: [[String!]!]!
        }

        type Mutation {
            updateSomething(data: UpdateData!): Boolean!
        }

        scalar MyScalar

        input NestedData {
            booleanField: Boolean!
            stringField: String!
        }

        type NestedImpl implements SomeInterface1 & SomeInterface2 & SomeInterface3 {
            field1: String
            field2: String
            field3: String
        }

        type Query {
            someQuery(input: QueryInput!): String
        }

        input QueryInput {
            list: [String!]!
            someEnum: SomeEnum!
        }

        enum SomeEnum {
            ValOne
            ValTwo
            ValThree
        }

        interface SomeInterface1 {
            field1: String
        }

        interface SomeInterface2 {
            field2: String
        }

        interface SomeInterface3 implements SomeInterface1 & SomeInterface2 {
            field1: String
            field2: String
            field3: String
        }

        type Subscription {
            streamData: [String!]!
        }

        input UpdateData {
            id: ID!
            nested: NestedData
        }
  "};

  let introspection: IntrospectionQuery = serde_json::from_str(KITCHEN_SINK).unwrap();
  let mut expected = introspection.build_client_schema(&ctx).clone();
  for (key, _typ) in expected.types.clone().iter() {
    if key.starts_with("__") {
        expected.types.remove(key);
    }
}

  let parsed = Schema::parse(&ctx, source).unwrap();
  assert_eq!(parsed, &expected);
}

const KITCHEN_SINK: &str = r#"{"__schema":{"description":null,"queryType":{"name":"Query"},"mutationType":{"name":"Mutation"},"subscriptionType":{"name":"Subscription"},"types":[{"kind":"OBJECT","name":"AllBasicScalars","description":null,"specifiedByURL":null,"fields":[{"name":"string","description":null,"args":[],"type":{"kind":"NON_NULL","name":null,"ofType":{"kind":"SCALAR","name":"String","ofType":null}},"isDeprecated":false,"deprecationReason":null},{"name":"stringOpt","description":null,"args":[],"type":{"kind":"SCALAR","name":"String","ofType":null},"isDeprecated":false,"deprecationReason":null},{"name":"stringList","description":null,"args":[],"type":{"kind":"LIST","name":null,"ofType":{"kind":"SCALAR","name":"String","ofType":null}},"isDeprecated":false,"deprecationReason":null},{"name":"int","description":null,"args":[],"type":{"kind":"NON_NULL","name":null,"ofType":{"kind":"SCALAR","name":"Int","ofType":null}},"isDeprecated":false,"deprecationReason":null},{"name":"intOpt","description":null,"args":[],"type":{"kind":"SCALAR","name":"Int","ofType":null},"isDeprecated":false,"deprecationReason":null},{"name":"intList","description":null,"args":[],"type":{"kind":"LIST","name":null,"ofType":{"kind":"SCALAR","name":"Int","ofType":null}},"isDeprecated":false,"deprecationReason":null},{"name":"float","description":null,"args":[],"type":{"kind":"NON_NULL","name":null,"ofType":{"kind":"SCALAR","name":"Float","ofType":null}},"isDeprecated":false,"deprecationReason":null},{"name":"floatOpt","description":null,"args":[],"type":{"kind":"SCALAR","name":"Float","ofType":null},"isDeprecated":false,"deprecationReason":null},{"name":"floatList","description":null,"args":[],"type":{"kind":"LIST","name":null,"ofType":{"kind":"SCALAR","name":"Float","ofType":null}},"isDeprecated":false,"deprecationReason":null},{"name":"bool","description":null,"args":[],"type":{"kind":"NON_NULL","name":null,"ofType":{"kind":"SCALAR","name":"Boolean","ofType":null}},"isDeprecated":false,"deprecationReason":null},{"name":"boolOpt","description":null,"args":[],"type":{"kind":"SCALAR","name":"Boolean","ofType":null},"isDeprecated":false,"deprecationReason":null},{"name":"boolList","description":null,"args":[],"type":{"kind":"LIST","name":null,"ofType":{"kind":"SCALAR","name":"Boolean","ofType":null}},"isDeprecated":false,"deprecationReason":null},{"name":"id","description":null,"args":[],"type":{"kind":"NON_NULL","name":null,"ofType":{"kind":"SCALAR","name":"ID","ofType":null}},"isDeprecated":false,"deprecationReason":null},{"name":"idOpt","description":null,"args":[],"type":{"kind":"SCALAR","name":"ID","ofType":null},"isDeprecated":false,"deprecationReason":null},{"name":"idList","description":null,"args":[],"type":{"kind":"LIST","name":null,"ofType":{"kind":"SCALAR","name":"ID","ofType":null}},"isDeprecated":false,"deprecationReason":null}],"inputFields":null,"interfaces":[],"enumValues":null,"possibleTypes":null},{"kind":"SCALAR","name":"String","description":"The `String` scalar type represents textual data, represented as UTF-8 character sequences. The String type is most often used by GraphQL to represent free-form human-readable text.","specifiedByURL":null,"fields":null,"inputFields":null,"interfaces":null,"enumValues":null,"possibleTypes":null},{"kind":"SCALAR","name":"Int","description":"The `Int` scalar type represents non-fractional signed whole numeric values. Int can represent values between -(2^31) and 2^31 - 1.","specifiedByURL":null,"fields":null,"inputFields":null,"interfaces":null,"enumValues":null,"possibleTypes":null},{"kind":"SCALAR","name":"Float","description":"The `Float` scalar type represents signed double-precision fractional values as specified by [IEEE 754](https://en.wikipedia.org/wiki/IEEE_floating_point).","specifiedByURL":null,"fields":null,"inputFields":null,"interfaces":null,"enumValues":null,"possibleTypes":null},{"kind":"SCALAR","name":"Boolean","description":"The `Boolean` scalar type represents `true` or `false`.","specifiedByURL":null,"fields":null,"inputFields":null,"interfaces":null,"enumValues":null,"possibleTypes":null},{"kind":"SCALAR","name":"ID","description":"The `ID` scalar type represents a unique identifier, often used to refetch an object or as key for a cache. The ID type appears in a JSON response as a String; however, it is not intended to be human-readable. When expected as an input type, any string (such as `\"4\"`) or integer (such as `4`) input value will be accepted as an 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