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Merged
merged 3 commits into from
Dec 19, 2022
Merged

add tests for federation schema parsing #117

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0f46649
add tests for federation schema parsing
samisuteria Dec 17, 2022
4e8e70f
run swiftformat
samisuteria Dec 17, 2022
ec9d18f
Merge branch 'main' into federation-parsing
NeedleInAJayStack Dec 19, 2022
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338 changes: 338 additions & 0 deletions Tests/GraphQLTests/FederationTests/FederationTests.swift
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@testable import GraphQL
import XCTest

final class FederationTests: XCTestCase {
func testFederationSampleSchema() throws {
// Confirm that the Apollo test schema can be parsed as expected https://github.com/apollographql/apollo-federation-subgraph-compatibility/blob/main/COMPATIBILITY.md
let source =
"""
extend schema
@link(
url: "https://specs.apollo.dev/federation/v2.0",
import: [
"@extends",
"@external",
"@key",
"@inaccessible",
"@override",
"@provides",
"@requires",
"@shareable",
"@tag"
]
)

type Product
@key(fields: "id")
@key(fields: "sku package")
@key(fields: "sku variation { id }") {
id: ID!
sku: String
package: String
variation: ProductVariation
dimensions: ProductDimension
createdBy: User @provides(fields: "totalProductsCreated")
notes: String @tag(name: "internal")
research: [ProductResearch!]!
}

type DeprecatedProduct @key(fields: "sku package") {
sku: String!
package: String!
reason: String
createdBy: User
}

type ProductVariation {
id: ID!
}

type ProductResearch @key(fields: "study { caseNumber }") {
study: CaseStudy!
outcome: String
}

type CaseStudy {
caseNumber: ID!
description: String
}

type ProductDimension @shareable {
size: String
weight: Float
unit: String @inaccessible
}

extend type Query {
product(id: ID!): Product
deprecatedProduct(sku: String!, package: String!): DeprecatedProduct @deprecated(reason: "Use product query instead")
}

extend type User @key(fields: "email") {
averageProductsCreatedPerYear: Int @requires(fields: "totalProductsCreated yearsOfEmployment")
email: ID! @external
name: String @override(from: "users")
totalProductsCreated: Int @external
yearsOfEmployment: Int! @external
}
"""

let schemaExtensionDefinition =
SchemaExtensionDefinition(definition: SchemaDefinition(directives: [
Directive(name: nameNode("link"), arguments: [
Argument(
name: nameNode("url"),
value: StringValue(
value: "https://specs.apollo.dev/federation/v2.0",
block: false
)
),
Argument(
name: nameNode("import"),
value: ListValue(values: [
StringValue(value: "@extends", block: false),
StringValue(value: "@external", block: false),
StringValue(value: "@key", block: false),
StringValue(value: "@inaccessible", block: false),
StringValue(value: "@override", block: false),
StringValue(value: "@provides", block: false),
StringValue(value: "@requires", block: false),
StringValue(value: "@shareable", block: false),
StringValue(value: "@tag", block: false),
])
),
]),
], operationTypes: []))

let productObjectTypeDefinition = ObjectTypeDefinition(
name: nameNode("Product"),
directives: [
Directive(name: nameNode("key"), arguments: [
Argument(
name: nameNode("fields"),
value: StringValue(value: "id", block: false)
),
]),
Directive(name: nameNode("key"), arguments: [
Argument(
name: nameNode("fields"),
value: StringValue(value: "sku package", block: false)
),
]),
Directive(name: nameNode("key"), arguments: [
Argument(
name: nameNode("fields"),
value: StringValue(value: "sku variation { id }", block: false)
),
]),
],
fields: [
FieldDefinition(name: nameNode("id"), type: NonNullType(type: typeNode("ID"))),
FieldDefinition(name: nameNode("sku"), type: typeNode("String")),
FieldDefinition(name: nameNode("package"), type: typeNode("String")),
FieldDefinition(name: nameNode("variation"), type: typeNode("ProductVariation")),
FieldDefinition(name: nameNode("dimensions"), type: typeNode("ProductDimension")),
FieldDefinition(name: nameNode("createdBy"), type: typeNode("User"), directives: [
Directive(name: nameNode("provides"), arguments: [
Argument(
name: nameNode("fields"),
value: StringValue(value: "totalProductsCreated", block: false)
),
]),
]),
FieldDefinition(name: nameNode("notes"), type: typeNode("String"), directives: [
Directive(name: nameNode("tag"), arguments: [
Argument(
name: nameNode("name"),
value: StringValue(value: "internal", block: false)
),
]),
]),
FieldDefinition(
name: nameNode("research"),
type: NonNullType(
type: ListType(
type: NonNullType(type: NamedType(name: nameNode("ProductResearch")))
)
)
),
]
)

let deprecatedProductObjectTypeDefinition = ObjectTypeDefinition(
name: nameNode("DeprecatedProduct"),
directives: [
Directive(name: nameNode("key"), arguments: [
Argument(
name: nameNode("fields"),
value: StringValue(value: "sku package", block: false)
),
]),
],
fields: [
FieldDefinition(name: nameNode("sku"), type: NonNullType(type: typeNode("String"))),
FieldDefinition(
name: nameNode("package"),
type: NonNullType(type: typeNode("String"))
),
FieldDefinition(name: nameNode("reason"), type: typeNode("String")),
FieldDefinition(name: nameNode("createdBy"), type: typeNode("User")),
]
)

let productVariationObjectTypeDefinition = ObjectTypeDefinition(
name: nameNode("ProductVariation"),
fields: [
FieldDefinition(name: nameNode("id"), type: NonNullType(type: typeNode("ID"))),
]
)

let productResearchObjectTypeDefinition = ObjectTypeDefinition(
name: nameNode("ProductResearch"),
directives: [
Directive(name: nameNode("key"), arguments: [
Argument(
name: nameNode("fields"),
value: StringValue(value: "study { caseNumber }", block: false)
),
]),
],
fields: [
FieldDefinition(
name: nameNode("study"),
type: NonNullType(type: typeNode("CaseStudy"))
),
FieldDefinition(name: nameNode("outcome"), type: typeNode("String")),
]
)

let caseStudyObjectTypeDefinition = ObjectTypeDefinition(
name: nameNode("CaseStudy"),
fields: [
FieldDefinition(
name: nameNode("caseNumber"),
type: NonNullType(type: typeNode("ID"))
),
FieldDefinition(name: nameNode("description"), type: typeNode("String")),
]
)

let productDimensionObjectTypeDefinition = ObjectTypeDefinition(
name: nameNode("ProductDimension"),
directives: [
Directive(name: nameNode("shareable")),
],
fields: [
FieldDefinition(name: nameNode("size"), type: typeNode("String")),
FieldDefinition(name: nameNode("weight"), type: typeNode("Float")),
FieldDefinition(name: nameNode("unit"), type: typeNode("String"), directives: [
Directive(name: nameNode("inaccessible")),
]),
]
)

let queryExtensionObjectTypeDefinition =
TypeExtensionDefinition(definition: ObjectTypeDefinition(
name: nameNode("Query"),
fields: [
FieldDefinition(name: nameNode("product"), arguments: [
InputValueDefinition(
name: nameNode("id"),
type: NonNullType(type: NamedType(name: nameNode("ID")))
),
], type: typeNode("Product")),
FieldDefinition(name: nameNode("deprecatedProduct"), arguments: [
InputValueDefinition(
name: nameNode("sku"),
type: NonNullType(type: NamedType(name: nameNode("String")))
),
InputValueDefinition(
name: nameNode("package"),
type: NonNullType(type: NamedType(name: nameNode("String")))
),
], type: typeNode("DeprecatedProduct"), directives: [
Directive(name: nameNode("deprecated"), arguments: [
Argument(
name: nameNode("reason"),
value: StringValue(value: "Use product query instead", block: false)
),
]),
]),
]
))

let userExtensionObjectTypeDefinition =
TypeExtensionDefinition(definition: ObjectTypeDefinition(
name: nameNode("User"),
directives: [
Directive(name: nameNode("key"), arguments: [
Argument(
name: nameNode("fields"),
value: StringValue(value: "email", block: false)
),
]),
],
fields: [
FieldDefinition(
name: nameNode("averageProductsCreatedPerYear"),
type: typeNode("Int"),
directives: [
Directive(name: nameNode("requires"), arguments: [
Argument(
name: nameNode("fields"),
value: StringValue(
value: "totalProductsCreated yearsOfEmployment",
block: false
)
),
]),
]
),
FieldDefinition(
name: nameNode("email"),
type: NonNullType(type: NamedType(name: nameNode("ID"))),
directives: [
Directive(name: nameNode("external")),
]
),
FieldDefinition(name: nameNode("name"), type: typeNode("String"), directives: [
Directive(name: nameNode("override"), arguments: [
Argument(
name: nameNode("from"),
value: StringValue(value: "users", block: false)
),
]),
]),
FieldDefinition(
name: nameNode("totalProductsCreated"),
type: typeNode("Int"),
directives: [
Directive(name: nameNode("external")),
]
),
FieldDefinition(
name: nameNode("yearsOfEmployment"),
type: NonNullType(type: typeNode("Int")),
directives: [
Directive(name: nameNode("external")),
]
),
]
))

let expected = Document(definitions: [
schemaExtensionDefinition,
productObjectTypeDefinition,
deprecatedProductObjectTypeDefinition,
productVariationObjectTypeDefinition,
productResearchObjectTypeDefinition,
caseStudyObjectTypeDefinition,
productDimensionObjectTypeDefinition,
queryExtensionObjectTypeDefinition,
userExtensionObjectTypeDefinition,
])

let result = try parse(source: source)
XCTAssert(result == expected)
}
}