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ResultTests.swift
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ResultTests.swift
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//
// ResultTests.swift
// SwiftRustIntegrationTestRunnerTests
//
// Created by Frankie Nwafili on 9/20/22.
import XCTest
@testable import SwiftRustIntegrationTestRunner
class ResultTests: XCTestCase {
/// Verify that we can pass a Result<String, String> from Swift -> Rust
func testSwiftCallRustResultString() throws {
rust_func_takes_result_string(.Ok("Success Message"))
rust_func_takes_result_string(.Err("Error Message"))
}
/// Verify that we can pass a Result<OpaqueRust, OpaqueRust> from Swift -> Rust
func testSwiftCallRustResultOpaqueRust() throws {
let reflectedOk = try! rust_func_reflect_result_opaque_rust(
.Ok(ResultTestOpaqueRustType(111))
)
XCTAssertEqual(reflectedOk.val(), 111)
do {
let _ = try rust_func_reflect_result_opaque_rust(
.Err(ResultTestOpaqueRustType(222))
)
XCTFail("The function should have returned an error.")
} catch let error as ResultTestOpaqueRustType {
XCTAssertEqual(error.val(), 222)
}
}
/// Verify that we can pass a Result<OpaqueSwift, OpaqueSwift> from Swift -> Rust
func testSwiftCallRustResultOpaqueSwift() throws {
rust_func_takes_result_opaque_swift(
.Ok(ResultTestOpaqueSwiftType(val: 555))
)
rust_func_takes_result_opaque_swift(
.Err(ResultTestOpaqueSwiftType(val: 666))
)
}
/// Verify that we can receive a Result<(), OpaqueRust> from Rust
func testSwiftCallRustResultNullOpaqueRust() throws {
try! rust_func_return_result_null_opaque_rust(true)
do {
try rust_func_return_result_null_opaque_rust(false)
XCTFail("The function should have returned an error.")
} catch let error as ResultTestOpaqueRustType {
XCTAssertEqual(error.val(), 222)
}
}
/// Verify that we can receive a Result<UnitStruct, OpaqueRust> from Rust
func testSwiftCallRustResultUnitStructOpaqueRust() throws {
try! rust_func_return_result_unit_struct_opaque_rust(true)
do {
try rust_func_return_result_unit_struct_opaque_rust(false)
XCTFail("The function should have returned an error.")
} catch let error as ResultTestOpaqueRustType {
XCTAssertEqual(error.val(), 222)
}
}
/// Verify that we can receive a Result<OpaqueRust, TransparentEnum> from Rust
func testResultOpaqueRustTransparentEnum() throws {
XCTContext.runActivity(named: "Should return a ResultTestOpaqueRustType") {
_ in
do {
let _ :ResultTestOpaqueRustType = try rust_func_return_result_opaque_rust_transparent_enum(true)
} catch {
XCTFail()
}
}
XCTContext.runActivity(named: "Should throw an error") {
_ in
do {
let _: ResultTestOpaqueRustType = try rust_func_return_result_opaque_rust_transparent_enum(false)
XCTFail("The function should have returned an error.")
} catch let error as ResultTransparentEnum {
switch error {
case .NamedField(let data):
XCTAssertEqual(data, 123)
case .UnnamedFields(_, _):
XCTFail()
case .NoFields:
XCTFail()
}
} catch {
XCTFail()
}
}
}
/// Verify that we can receive a Result<TransparentEnum, OpaqueRust> from Rust
func testResultTransparentEnumOpaqueRust() throws {
XCTContext.runActivity(named: "Should return a ResultTestOpaqueRustType") {
_ in
do {
let resultTransparentEnum : ResultTransparentEnum = try rust_func_return_result_transparent_enum_opaque_rust(true)
switch resultTransparentEnum {
case .NamedField(let data):
XCTAssertEqual(data, 123)
case .UnnamedFields(_, _):
XCTFail()
case .NoFields:
XCTFail()
}
} catch {
XCTFail()
}
}
XCTContext.runActivity(named: "Should throw an error") {
_ in
do {
let _: ResultTransparentEnum = try rust_func_return_result_transparent_enum_opaque_rust(false)
XCTFail("The function should have returned an error.")
} catch _ as ResultTestOpaqueRustType {
} catch {
XCTFail()
}
}
}
/// Verify that we can receive a Result<(), TransparentEnum> from Rust
func testResultUnitTypeTransparentEnum() throws {
XCTContext.runActivity(named: "Should return a Unit type") {
_ in
do {
let _ :() = try rust_func_return_result_unit_type_enum_opaque_rust(true)
} catch {
XCTFail()
}
}
XCTContext.runActivity(named: "Should throw an error") {
_ in
do {
let _ :() = try rust_func_return_result_unit_type_enum_opaque_rust(false)
XCTFail("The function should have returned an error.")
} catch let error as ResultTransparentEnum {
switch error {
case .NamedField(let data):
XCTAssertEqual(data, 123)
case .UnnamedFields(_, _):
XCTFail()
case .NoFields:
XCTFail()
}
} catch {
XCTFail()
}
}
}
/// Verify that we can receive a Result<(primitive type, OpaqueRustType, String), TransparentEnum> from Rust
func testResultTupleTransparentEnum() throws {
XCTContext.runActivity(named: "Should return a tuple type") {
_ in
do {
let tuple: (Int32, ResultTestOpaqueRustType, RustString) = try rust_func_return_result_tuple_transparent_enum(true)
XCTAssertEqual(tuple.0, 123)
XCTAssertEqual(tuple.1.val(), ResultTestOpaqueRustType(123).val())
XCTAssertEqual(tuple.2.toString(), "hello")
} catch {
XCTFail()
}
}
XCTContext.runActivity(named: "Should throw an error") {
_ in
do {
let _: (Int32, ResultTestOpaqueRustType, RustString) = try rust_func_return_result_tuple_transparent_enum(false)
XCTFail("The function should have returned an error.")
} catch let error as ResultTransparentEnum {
switch error {
case .NamedField(let data):
XCTAssertEqual(data, -123)
case .UnnamedFields(_, _):
XCTFail()
case .NoFields:
XCTFail()
}
} catch {
XCTFail()
}
}
}
/// Verify that we can receive a Result<Vec<>, OpaqueRust> from Rust
func testSwiftCallRustResultVecUInt32Rust() throws {
let vec = try! rust_func_return_result_of_vec_u32()
XCTAssertEqual(vec.len(), 3)
for (i, value) in vec.enumerated() {
XCTAssertEqual(UInt32(i), value)
}
}
func testSwiftCallRustResultVecOpaqueRust() throws {
let vec = try! rust_func_return_result_of_vec_opaque()
XCTAssertEqual(vec.len(), 3)
for (i, value) in vec.enumerated() {
XCTAssertEqual(UInt32(i), value.val())
}
}
}