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/*
* Copyright 2021 Google Inc. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import XCTest
@testable import FlatBuffers
final class FlatBuffersTests: XCTestCase {
let country = "Norway"
func testEndian() { XCTAssertEqual(isLitteEndian, true) }
func testOffset() {
let o = Offset<Int>()
let b = Offset<Int>(offset: 1)
XCTAssertEqual(o.isEmpty, true)
XCTAssertEqual(b.isEmpty, false)
}
func testCreateString() {
let helloWorld = "Hello, world!"
var b = FlatBufferBuilder(initialSize: 16)
XCTAssertEqual(b.create(string: country).o, 12)
XCTAssertEqual(b.create(string: helloWorld).o, 32)
b.clear()
XCTAssertEqual(b.create(string: helloWorld).o, 20)
XCTAssertEqual(b.create(string: country).o, 32)
b.clear()
XCTAssertEqual(b.create(string: String(repeating: "a", count: 257)).o, 264)
}
func testStartTable() {
var b = FlatBufferBuilder(initialSize: 16)
XCTAssertNoThrow(b.startTable(with: 0))
b.clear()
XCTAssertEqual(b.create(string: country).o, 12)
XCTAssertEqual(b.startTable(with: 0), 12)
}
func testCreateFinish() {
var b = FlatBufferBuilder(initialSize: 16)
let countryOff = Country.createCountry(builder: &b, name: country, log: 200, lan: 100)
b.finish(offset: countryOff)
let v: [UInt8] = [16, 0, 0, 0, 0, 0, 10, 0, 16, 0, 4, 0, 8, 0, 12, 0, 10, 0, 0, 0, 12, 0, 0, 0, 100, 0, 0, 0, 200, 0, 0, 0, 6, 0, 0, 0, 78, 111, 114, 119, 97, 121, 0, 0]
XCTAssertEqual(b.sizedByteArray, v)
}
func testCreateFinishWithPrefix() {
var b = FlatBufferBuilder(initialSize: 16)
let countryOff = Country.createCountry(builder: &b, name: country, log: 200, lan: 100)
b.finish(offset: countryOff, addPrefix: true)
let v: [UInt8] = [44, 0, 0, 0, 16, 0, 0, 0, 0, 0, 10, 0, 16, 0, 4, 0, 8, 0, 12, 0, 10, 0, 0, 0, 12, 0, 0, 0, 100, 0, 0, 0, 200, 0, 0, 0, 6, 0, 0, 0, 78, 111, 114, 119, 97, 121, 0, 0]
XCTAssertEqual(b.sizedByteArray, v)
}
func testReadCountry() {
let v: [UInt8] = [16, 0, 0, 0, 0, 0, 10, 0, 16, 0, 4, 0, 8, 0, 12, 0, 10, 0, 0, 0, 12, 0, 0, 0, 100, 0, 0, 0, 200, 0, 0, 0, 6, 0, 0, 0, 78, 111, 114, 119, 97, 121, 0, 0]
let buffer = ByteBuffer(bytes: v)
let c = Country.getRootAsCountry(buffer)
XCTAssertEqual(c.lan, 100)
XCTAssertEqual(c.log, 200)
XCTAssertEqual(c.nameVector, [78, 111, 114, 119, 97, 121])
XCTAssertEqual(c.name, country)
}
func testWriteNullableStrings() {
var b = FlatBufferBuilder()
XCTAssertTrue(b.create(string: nil).isEmpty)
XCTAssertTrue(b.createShared(string: nil).isEmpty)
}
func testWriteOptionalValues() {
var b = FlatBufferBuilder()
let root = optional_scalars_ScalarStuff.createScalarStuff(
&b,
justI8: 80,
maybeI8: nil,
justU8: 100,
maybeU8: 10,
maybeBool: true,
justEnum: .one,
maybeEnum: nil)
b.finish(offset: root)
let scalarTable = optional_scalars_ScalarStuff.getRootAsScalarStuff(bb: b.sizedBuffer)
XCTAssertEqual(scalarTable.justI8, 80)
XCTAssertNil(scalarTable.maybeI8)
XCTAssertEqual(scalarTable.maybeBool, true)
XCTAssertEqual(scalarTable.defaultI8, 42)
XCTAssertEqual(scalarTable.justU8, 100)
XCTAssertEqual(scalarTable.maybeU8, 10)
XCTAssertEqual(scalarTable.justEnum, .one)
XCTAssertNil(scalarTable.maybeEnum)
}
}
class Country {
static let offsets: (name: VOffset, lan: VOffset, lng: VOffset) = (4, 6, 8)
private var __t: Table
private init(_ t: Table) {
__t = t
}
var lan: Int32 { let o = __t.offset(6); return o == 0 ? 0 : __t.readBuffer(of: Int32.self, at: o) }
var log: Int32 { let o = __t.offset(8); return o == 0 ? 0 : __t.readBuffer(of: Int32.self, at: o) }
var nameVector: [UInt8]? { __t.getVector(at: 4) }
var name: String? { let o = __t.offset(4); return o == 0 ? nil : __t.string(at: o) }
@inlinable
static func getRootAsCountry(_ bb: ByteBuffer) -> Country {
Country(Table(bb: bb, position: Int32(bb.read(def: UOffset.self, position: 0))))
}
@inlinable
static func createCountry(
builder: inout FlatBufferBuilder,
name: String,
log: Int32,
lan: Int32) -> Offset<Country>
{
createCountry(builder: &builder, offset: builder.create(string: name), log: log, lan: lan)
}
@inlinable
static func createCountry(
builder: inout FlatBufferBuilder,
offset: Offset<String>,
log: Int32,
lan: Int32) -> Offset<Country>
{
let _start = builder.startTable(with: 3)
Country.add(builder: &builder, lng: log)
Country.add(builder: &builder, lan: lan)
Country.add(builder: &builder, name: offset)
return Country.end(builder: &builder, startOffset: _start)
}
@inlinable
static func end(builder: inout FlatBufferBuilder, startOffset: UOffset) -> Offset<Country> {
Offset(offset: builder.endTable(at: startOffset))
}
@inlinable
static func add(builder: inout FlatBufferBuilder, name: String) {
add(builder: &builder, name: builder.create(string: name))
}
@inlinable
static func add(builder: inout FlatBufferBuilder, name: Offset<String>) {
builder.add(offset: name, at: Country.offsets.name)
}
@inlinable
static func add(builder: inout FlatBufferBuilder, lan: Int32) {
builder.add(element: lan, def: 0, at: Country.offsets.lan)
}
@inlinable
static func add(builder: inout FlatBufferBuilder, lng: Int32) {
builder.add(element: lng, def: 0, at: Country.offsets.lng)
}
}
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