| 1 | import Foundation |
| 2 | import RastrilloApple |
| 3 | import RastrilloTestSupport |
| 4 | import XCTest |
| 5 | @testable import DocsKit |
| 6 | |
| 7 | /// Stands in for NativeConnection: which transport the account has right now. |
| 8 | @MainActor private final class Session { |
| 9 | var current: NativeTransport? |
| 10 | init(_ current: NativeTransport?) { self.current = current } |
| 11 | } |
| 12 | |
| 13 | private func list(_ titles: [String]) -> Data { |
| 14 | let documents = titles.enumerated().map { #"{"sqid":"d\#($0.offset)","title":"\#($0.element)"}"# } |
| 15 | return Data(#"{"documents":[\#(documents.joined(separator: ","))],"can_create":true}"#.utf8) |
| 16 | } |
| 17 | |
| 18 | /// A server for one writable, empty document: its stream stays open without |
| 19 | /// events, and every update is accepted. Answers by request, since the model's |
| 20 | /// stream and saves race. |
| 21 | private func documentServer() -> ScriptedTransport { |
| 22 | ScriptedTransport { call in |
| 23 | switch (call.kind, call.method, call.path) { |
| 24 | case (.request, "GET", "/d/doc"): |
| 25 | return .respond(status: 200, body: Data(#"{"sqid":"doc","title":"Doc","guid":"doc-guid","can_write":true,"can_share":false}"#.utf8)) |
| 26 | case (.request, "GET", "/d/doc/updates"): |
| 27 | return .respond(status: 200, headers: ["Docs-Seq": "0"]) |
| 28 | case (.stream, _, "/d/doc/stream"): |
| 29 | return .hang |
| 30 | case (.request, "POST", "/d/doc/updates"): |
| 31 | return .respond(status: 204) |
| 32 | default: |
| 33 | return nil |
| 34 | } |
| 35 | } |
| 36 | } |
| 37 | |
| 38 | final class TransportSupplierTests: XCTestCase { |
| 39 | @MainActor func testEachRequestUsesTheSessionsCurrentTransport() async { |
| 40 | let first = ScriptedTransport([.respond(status: 200, body: list(["Before"]))]) |
| 41 | let replacement = ScriptedTransport([.respond(status: 200, body: list(["After", "Signing in again"]))]) |
| 42 | let session = Session(first) |
| 43 | let model = DocsModel(transport: { session.current }) |
| 44 | await model.load() |
| 45 | XCTAssertEqual(model.documents.map(\.title), ["Before"]) |
| 46 | session.current = replacement |
| 47 | await model.load() |
| 48 | XCTAssertEqual(model.listState, .loaded) |
| 49 | XCTAssertEqual(model.documents.map(\.title), ["After", "Signing in again"]) |
| 50 | XCTAssertEqual(first.calls.count, 1, "The model kept using the transport it was created with") |
| 51 | XCTAssertEqual(replacement.calls.count, 1) |
| 52 | } |
| 53 | |
| 54 | /// The case the supplier exists for: an edit made while one session |
| 55 | /// is in place is sent with whichever session is current when it is sent. |
| 56 | @MainActor func testUnsentEditGoesOutOnTheReplacementTransport() async throws { |
| 57 | let ended = documentServer() |
| 58 | let session = Session(ended) |
| 59 | let model = DocsModel(transport: { session.current }) |
| 60 | await model.open("doc") |
| 61 | XCTAssertEqual(model.detail?.sqid, "doc") |
| 62 | let deadline = ContinuousClock.now.advanced(by: .seconds(5)) |
| 63 | // Opening an empty document inserts its first paragraph and saves it. |
| 64 | while model.hasUnsavedChanges && .now < deadline { try await Task.sleep(for: .milliseconds(10)) } |
| 65 | XCTAssertFalse(model.hasUnsavedChanges) |
| 66 | let sentBefore = ended.committed.filter { $0.method == "POST" }.count |
| 67 | |
| 68 | let replacement = documentServer() |
| 69 | session.current = replacement |
| 70 | model.didRender(model.projectionGeneration) |
| 71 | XCTAssertTrue(model.enqueue(["op": .string("display_edit"), "at": .number(0), "length": .number(0), "text": .string("Hello")])) |
| 72 | while model.hasUnsavedChanges && .now < deadline { try await Task.sleep(for: .milliseconds(10)) } |
| 73 | XCTAssertFalse(model.hasUnsavedChanges, "The edit was never acknowledged") |
| 74 | |
| 75 | XCTAssertEqual(ended.committed.filter { $0.method == "POST" }.count, sentBefore, "The edit went out on the ended session") |
| 76 | XCTAssertEqual(replacement.committed.map(\.path), ["/d/doc/updates"]) |
| 77 | await model.discardAll() |
| 78 | } |
| 79 | } |
| 80 | |
amadan