import XCTest
@testable import LChatCore

// The kind a new chat is created as (ThreadStore.createChat). The regression
// this pins: an OPEN group with nobody but its creator — legitimate, since
// others find it in Discover — used to fall through to kind:"self" and appear
// as a second "Notes", its name and open_key dropped on the floor. Mirrors the
// web's createThread(otherIds, {group}) in newchat.js, which sends
// group ? "group" : "dm" and never derives "self" from an empty list.
final class ThreadKindTests: XCTestCase {
    func testGroupIntentWinsOverAnEmptyMemberList() {
        XCTAssertEqual(ThreadStore.threadKind(others: [], group: true), "group")
    }

    func testNoOthersAndNoGroupIntentIsASelfThread() {
        XCTAssertEqual(ThreadStore.threadKind(others: [], group: false), "self")
    }

    func testOnePersonIsADMUnlessTheGroupFlowWasUsed() {
        XCTAssertEqual(ThreadStore.threadKind(others: ["u2"], group: false), "dm")
        XCTAssertEqual(ThreadStore.threadKind(others: ["u2"], group: true), "group")
    }

    func testTwoOrMoreOthersAreAlwaysAGroup() {
        XCTAssertEqual(ThreadStore.threadKind(others: ["u2", "u3"], group: false), "group")
        XCTAssertEqual(ThreadStore.threadKind(others: ["u2", "u3"], group: true), "group")
    }
}