//
// Copyright 2019 Bloomberg Finance L.P.
//
// 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 Foundation
@testable import XCDiffCore
import XCTest

final class FileReferencesComparatorTests: XCTestCase {
    private var subject: FileReferencesComparator!

    override func setUp() {
        super.setUp()

        subject = FileReferencesComparator()
    }

    // MARK: - Tests

    func testTag() {
        // When / Then
        XCTAssertEqual(subject.tag, "file_references")
    }

    func testCompare_whenNoFileReferences_noDifference() throws {
        // Given
        let first = project(name: "P1")
            .addTarget()
            .projectDescriptor()
        let second = project(name: "P2")
            .addTarget()
            .projectDescriptor()

        // When
        let actual = try subject.compare(first,
                                         second,
                                         parameters: .all)

        // Then
        XCTAssertEqual(actual, [
            .init(tag: "file_references"),
        ])
    }

    func testCompare_whenDifferentFileReferences() throws {
        // Given
        let first = project(name: "P1")
            .addFileReferences(["A.md", "B1.md"])
            .projectDescriptor()
        let second = project(name: "P2")
            .addFileReferences(["A.md", "B2.md"])
            .projectDescriptor()

        // When
        let actual = try subject.compare(first,
                                         second,
                                         parameters: .all)

        // Then
        XCTAssertEqual(actual, [
            .init(tag: "file_references",
                  onlyInFirst: ["B1.md"],
                  onlyInSecond: ["B2.md"]),
        ])
    }
}
