1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
|
import XCTest
@testable import DomainDig
/// Characterization tests for the field-level diff engine. `DiffService` is a
/// pure function over two `DomainReport`s, so every case here pins observable
/// behavior (change classification, normalization, summary phrasing) against a
/// deterministic fixture.
final class DiffServiceTests: XCTestCase {
func testIdenticalReportsProduceNoChanges() {
let report = SnapshotFixture.report(
availability: .registered,
ownership: DomainOwnership(registrar: "Example Registrar")
)
let diff = DiffService.compare(from: report, to: report)
XCTAssertEqual(diff.changeCount, 0)
XCTAssertTrue(diff.changedSectionTitles.isEmpty)
XCTAssertFalse(diff.sections.contains { $0.hasChanges })
}
func testAvailabilityTransitionIsReportedAsChanged() {
let old = SnapshotFixture.report(availability: .available)
let new = SnapshotFixture.report(availability: .registered)
let diff = DiffService.compare(from: old, to: new)
let availability = try? XCTUnwrap(diff.sections.first { $0.id == "availability" })
let item = availability?.items.first { $0.id == "availability" }
XCTAssertEqual(item?.changeType, .changed)
XCTAssertEqual(item?.oldValue, "Available")
XCTAssertEqual(item?.newValue, "Registered")
XCTAssertTrue(diff.changedSectionTitles.contains("Domain / Availability"))
}
func testPrimaryIPChangeSurfacesInAvailabilitySection() {
let old = SnapshotFixture.report(
availability: .registered,
dnsSections: [SnapshotFixture.dnsSection(type: .A, values: ["203.0.113.10"])]
)
let new = SnapshotFixture.report(
availability: .registered,
dnsSections: [SnapshotFixture.dnsSection(type: .A, values: ["203.0.113.20"])]
)
let diff = DiffService.compare(from: old, to: new)
let item = diff.sections
.first { $0.id == "availability" }?
.items.first { $0.id == "primary-ip" }
XCTAssertEqual(item?.changeType, .changed)
XCTAssertEqual(item?.oldValue, "203.0.113.10")
XCTAssertEqual(item?.newValue, "203.0.113.20")
}
func testCaseAndWhitespaceDifferencesAreNotChanges() {
let old = SnapshotFixture.report(ownership: DomainOwnership(registrar: "GoDaddy"))
let new = SnapshotFixture.report(ownership: DomainOwnership(registrar: " godaddy "))
let diff = DiffService.compare(from: old, to: new)
let item = diff.sections
.first { $0.id == "ownership" }?
.items.first { $0.id == "registrar" }
XCTAssertEqual(item?.changeType, .unchanged, "case- and whitespace-only differences must not register as changes")
}
func testAddedAndRemovedOwnershipFields() {
let absent = SnapshotFixture.report(ownership: nil)
let present = SnapshotFixture.report(ownership: DomainOwnership(registrar: "Example Registrar"))
let added = DiffService.compare(from: absent, to: present)
.sections.first { $0.id == "ownership" }?
.items.first { $0.id == "registrar" }
XCTAssertEqual(added?.changeType, .added)
XCTAssertNil(added?.oldValue)
XCTAssertEqual(added?.newValue, "Example Registrar")
let removed = DiffService.compare(from: present, to: absent)
.sections.first { $0.id == "ownership" }?
.items.first { $0.id == "registrar" }
XCTAssertEqual(removed?.changeType, .removed)
XCTAssertEqual(removed?.oldValue, "Example Registrar")
XCTAssertNil(removed?.newValue)
}
func testDNSRecordValueChangeIsDetected() {
let old = SnapshotFixture.report(
dnsSections: [SnapshotFixture.dnsSection(type: .NS, values: ["ns1.example.com", "ns2.example.com"])]
)
let new = SnapshotFixture.report(
dnsSections: [SnapshotFixture.dnsSection(type: .NS, values: ["ns1.example.com", "ns3.example.com"])]
)
let dns = DiffService.compare(from: old, to: new).sections.first { $0.id == "dns" }
let records = dns?.items.first { $0.id == "dns-ns-records" }
XCTAssertEqual(records?.changeType, .changed)
}
func testDNSRecordReorderIsNotAChange() {
// Values are normalized (sorted, lowercased) before comparison, so a pure
// reorder must diff as unchanged.
let old = SnapshotFixture.report(
dnsSections: [SnapshotFixture.dnsSection(type: .NS, values: ["ns1.example.com", "ns2.example.com"])]
)
let new = SnapshotFixture.report(
dnsSections: [SnapshotFixture.dnsSection(type: .NS, values: ["NS2.example.com", "NS1.example.com"])]
)
let records = DiffService.compare(from: old, to: new)
.sections.first { $0.id == "dns" }?
.items.first { $0.id == "dns-ns-records" }
XCTAssertEqual(records?.changeType, .unchanged)
}
func testSummaryMessagePhrasing() {
XCTAssertEqual(DiffService.summaryMessage(from: [], changeCount: 0), "No meaningful changes")
XCTAssertEqual(DiffService.summaryMessage(from: ["DNS"], changeCount: 1), "DNS changed")
XCTAssertEqual(
DiffService.summaryMessage(from: ["DNS", "Ownership"], changeCount: 3),
"DNS and ownership changed (3 items)"
)
}
func testContextNoteFlagsDifferentResolvers() {
let old = SnapshotFixture.report(resolverURLString: "https://one.example/dns-query")
let new = SnapshotFixture.report(resolverURLString: "https://two.example/dns-query")
let note = DiffService.comparisonContextNote(from: old, to: new)
XCTAssertEqual(note, "Compared snapshots used different DNS resolvers.")
}
func testContextNoteNilWhenResolversMatch() {
let report = SnapshotFixture.report()
XCTAssertNil(DiffService.comparisonContextNote(from: report, to: report))
}
func testCertificateWarningLevelThresholds() {
func level(daysUntilExpiry days: Int?) -> CertificateWarningLevel {
let ssl = days.map { SnapshotFixture.certificate(daysUntilExpiry: $0) }
return DiffService.certificateWarningLevel(for: SnapshotFixture.snapshot(sslInfo: ssl))
}
XCTAssertEqual(level(daysUntilExpiry: nil), .none)
XCTAssertEqual(level(daysUntilExpiry: 45), .none)
XCTAssertEqual(level(daysUntilExpiry: 29), .warning)
XCTAssertEqual(level(daysUntilExpiry: 14), .warning)
XCTAssertEqual(level(daysUntilExpiry: 13), .critical)
XCTAssertEqual(level(daysUntilExpiry: 0), .critical)
}
func testCrossDomainComparisonPairsBothDomains() {
let a = SnapshotFixture.report(domain: "alpha.example", availability: .registered)
let b = SnapshotFixture.report(domain: "beta.example", availability: .available)
let result = DiffService.compare(domainA: a, domainB: b)
XCTAssertEqual(result.domainA, "alpha.example")
XCTAssertEqual(result.domainB, "beta.example")
XCTAssertTrue(result.changeCount > 0)
}
}
|
