ClientInterceptorPipelineOperationTests.swift

/*
 * Copyright 2024, gRPC Authors 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 Testing

@testable import GRPCCore

@Suite("ClientInterceptorPipelineOperation")
struct ClientInterceptorPipelineOperationTests {
  @Test("Applies to", arguments: [
    (
      .all,
      [.fooBar, .fooBaz, .barFoo, .barBaz],
      []
    ),
    (
      .services([ServiceDescriptor(package: "pkg", service: "foo")]),
      [.fooBar, .fooBaz],
      [.barFoo, .barBaz]
    ),
    (
      .methods([.barFoo]),
      [.barFoo],
      [.fooBar, .fooBaz, .barBaz]
    )
  ] as [(ClientInterceptorPipelineOperation.Subject, [MethodDescriptor], [MethodDescriptor])])
  func appliesTo(
    operationSubject: ClientInterceptorPipelineOperation.Subject,
    applicableMethods: [MethodDescriptor],
    notApplicableMethods: [MethodDescriptor]
  ) {
    let operation = ClientInterceptorPipelineOperation.apply(
      .requestCounter(.init()),
      to: operationSubject
    )

    for applicableMethod in applicableMethods {
      #expect(operation.applies(to: applicableMethod))
    }

    for notApplicableMethod in notApplicableMethods {
      #expect(!operation.applies(to: notApplicableMethod))
    }
  }
}

extension MethodDescriptor {
  fileprivate static let fooBar = Self(service: "pkg.foo", method: "bar")
  fileprivate static let fooBaz = Self(service: "pkg.foo", method: "baz")
  fileprivate static let barFoo = Self(service: "pkg.bar", method: "foo")
  fileprivate static let barBaz = Self(service: "pkg.bar", method: "Baz")
}