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1	import XCTest
2	@testable import LChatCore
3
4	// 🤖 Sidebar snippet (previewText) must mirror the web (previewText in
5	// shell.js): a non-image attachment reads as a file chip, not "📷 Photo".
6	final class PreviewTextTests: XCTestCase {
7	private func att(_ name: String, _ type: String?) -> Attachment {
8	Attachment(id: "b", name: name, type: type)
9	}
10
11	func testTextTakesPrecedence() {
12	var p = MessagePayload()
13	p.text = " hello world \n"
14	p.attachments = [att("photo.jpg", "image/jpeg")]
15	XCTAssertEqual(previewText(kind: "dm", payload: p), "hello world")
16	}
17
18	func testSingleImage() {
19	var p = MessagePayload()
20	p.attachments = [att("photo.jpg", "image/jpeg")]
21	XCTAssertEqual(previewText(kind: "dm", payload: p), "📷 Photo")
22	}
23
24	func testMultipleImages() {
25	var p = MessagePayload()
26	p.attachments = [att("a.jpg", "image/jpeg"), att("b.png", "image/png")]
27	XCTAssertEqual(previewText(kind: "dm", payload: p), "📷 2 photos")
28	}
29
30	func testSingleFileIsNotAPhoto() {
31	var p = MessagePayload()
32	p.attachments = [att("report.docx", "application/vnd.openxmlformats-officedocument.wordprocessingml.document")]
33	XCTAssertEqual(previewText(kind: "dm", payload: p), "📎 report.docx")
34	}
35
36	func testMultipleFiles() {
37	var p = MessagePayload()
38	p.attachments = [att("a.docx", "application/msword"), att("b.pdf", "application/pdf")]
39	XCTAssertEqual(previewText(kind: "dm", payload: p), "📎 2 files")
40	}
41
42	func testMixedImageAndFileFallsToFiles() {
43	var p = MessagePayload()
44	p.attachments = [att("a.jpg", "image/jpeg"), att("b.pdf", "application/pdf")]
45	XCTAssertEqual(previewText(kind: "dm", payload: p), "📎 2 files")
46	}
47
48	// A typeless attachment (legacy) isn't an image → file chip with its name.
49	func testUntypedAttachment() {
50	var p = MessagePayload()
51	p.attachments = [att("mystery.bin", nil)]
52	XCTAssertEqual(previewText(kind: "dm", payload: p), "📎 mystery.bin")
53	}
54
55	func testGroupPrefix() {
56	var p = MessagePayload()
57	p.name = "Ada"
58	p.attachments = [att("report.docx", "application/msword")]
59	XCTAssertEqual(previewText(kind: "group", payload: p), "Ada: 📎 report.docx")
60	}
61
62	// A reaction has no text of its own — the row used to go blank (in a group,
63	// a bare "Ada: "). It says what happened instead, quoting the snippet the
64	// reacting client stamped inside the ciphertext. Web twin: reactionLine in
65	// format.js + the reaction branch in shell.js previewText.
66	private func reaction(_ name: String, _ emoji: String, on: Bool, target: String?) -> MessagePayload {
67	var p = MessagePayload()
68	p.type = "reaction"
69	p.name = name
70	p.emoji = emoji
71	p.on = on
72	p.targetSid = 12345
73	p.targetText = target
74	return p
75	}
76
77	func testReactionQuotesItsTarget() {
78	let p = reaction("Ada", "👍", on: true, target: "buy milk")
79	XCTAssertEqual(previewText(kind: "dm", payload: p), "Ada reacted 👍 to “buy milk”")
80	}
81
82	// It names the actor itself, so the group prefix never doubles up.
83	func testReactionTakesNoGroupPrefix() {
84	let p = reaction("Ada", "👍", on: true, target: "buy milk")
85	XCTAssertEqual(previewText(kind: "group", payload: p), "Ada reacted 👍 to “buy milk”")
86	}
87
88	func testMyOwnReactionSaysYou() {
89	let p = reaction("Ada", "🎉", on: true, target: "shipped it")
90	XCTAssertEqual(previewText(kind: "group", payload: p, mine: true), "You reacted 🎉 to “shipped it”")
91	}
92
93	// An un-react speaks too: on reload this event is all the sidebar has, so
94	// silence would mean a different row after a refresh than the one shown live.
95	func testUnReactSpeaks() {
96	let p = reaction("Bob", "❤️", on: false, target: "shipped it 🎉")
97	XCTAssertEqual(previewText(kind: "dm", payload: p), "Bob removed ❤️ from “shipped it 🎉”")
98	}
99
100	// Reactions from clients that predate targetText (and every reaction
101	// already in a database) carry no snippet — the bare form still reads.
102	func testReactionWithoutASnippet() {
103	XCTAssertEqual(previewText(kind: "dm", payload: reaction("Ada", "👍", on: true, target: nil)),
104	"Ada reacted 👍")
105	XCTAssertEqual(previewText(kind: "dm", payload: reaction("Ada", "👍", on: false, target: nil)),
106	"Ada removed 👍")
107	}
108
109	func testReactionQuoteIsClamped() {
110	let p = reaction("Ada", "👍", on: true, target: String(repeating: "a", count: 200))
111	let line = previewText(kind: "dm", payload: p)
112	XCTAssertTrue(line.hasPrefix("Ada reacted 👍 to “"))
113	XCTAssertTrue(line.hasSuffix("…”"))
114	XCTAssertLessThan(line.count, 70, "the sidebar line stays one line's worth")
115	}
116
117	// The caller resolves the actor by uid (ThreadStore's displayLabels — my
118	// name for them, #577), and that wins over the payload's snapshot. Without
119	// it, a reaction from a device that stamped no screen name — common on real
120	// data — reads "Someone reacted 👍".
121	func testActorResolvesByUidOverThePayloadName() {
122	var p = reaction("", "😂", on: true, target: nil)
123	p.name = ""
124	XCTAssertEqual(previewText(kind: "group", payload: p, actor: "Paul"), "Paul reacted 😂")
125	}
126
127	func testResolvedActorBeatsAStalePayloadName() {
128	let p = reaction("Old Name", "👍", on: true, target: "buy milk")
129	XCTAssertEqual(previewText(kind: "dm", payload: p, actor: "My Name For Them"),
130	"My Name For Them reacted 👍 to “buy milk”")
131	}
132
133	// Nobody to resolve (they left the space, and the payload named no one).
134	func testReactionWithoutANameSaysSomeone() {
135	var p = reaction("", "👍", on: true, target: "buy milk")
136	p.name = nil
137	XCTAssertEqual(previewText(kind: "dm", payload: p), "Someone reacted 👍 to “buy milk”")
138	}
139
140	// The group prefix takes the same by-uid resolution as the reaction line:
141	// my name for them, so the row survives a rename and never renders a bare
142	// ": hello" for a sender whose device stamped no screen name. Web twin:
143	// previewText in shell.js resolves `who` once and uses it for both.
144	func testGroupPrefixUsesTheResolvedActor() {
145	var p = MessagePayload()
146	p.name = "Old Name"
147	p.text = "hello"
148	XCTAssertEqual(previewText(kind: "group", payload: p, actor: "My Name For Them"),
149	"My Name For Them: hello")
150	}
151
152	func testGroupPrefixFallsBackToThePayloadName() {
153	var p = MessagePayload()
154	p.name = "Ada"
155	p.text = "hello"
156	XCTAssertEqual(previewText(kind: "group", payload: p), "Ada: hello")
157	}
158
159	// Nothing to resolve and nothing stamped: no stray colon.
160	func testGroupPrefixIsSkippedWithNoNameAtAll() {
161	var p = MessagePayload()
162	p.text = "hello"
163	XCTAssertEqual(previewText(kind: "group", payload: p), "hello")
164	}
165
166	// An action line names its own actor — prefixing it doubles the name up.
167	func testActionLineTakesNoGroupPrefix() {
168	var p = MessagePayload()
169	p.name = "Ada"
170	p.text = "waves"
171	p.action = true
172	XCTAssertEqual(previewText(kind: "group", payload: p, actor: "Ada"), "waves")
173	}
174	}
175