swift-argument-parser/Tests/ArgumentParserUnitTests/InputOriginTests.swift

//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift Argument Parser open source project
//
// Copyright (c) 2021 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
//
//===----------------------------------------------------------------------===//

import XCTest

@testable import ArgumentParser

final class InputOriginTests: XCTestCase {}

extension InputOriginTests {
  func testIsDefaultValue() {
    func assert(elements: [InputOrigin.Element], expectedIsDefaultValue: Bool) {
      let inputOrigin = InputOrigin(elements: elements)
      if expectedIsDefaultValue {
        XCTAssertTrue(inputOrigin.isDefaultValue)
      } else {
        XCTAssertFalse(inputOrigin.isDefaultValue)
      }
    }

    assert(elements: [], expectedIsDefaultValue: false)
    assert(elements: [.defaultValue], expectedIsDefaultValue: true)
    assert(
      elements: [.argumentIndex(SplitArguments.Index(inputIndex: 1))],
      expectedIsDefaultValue: false)
    assert(
      elements: [
        .defaultValue, .argumentIndex(SplitArguments.Index(inputIndex: 1)),
      ],
      expectedIsDefaultValue: false)
  }
}