36 lines
1.2 KiB
Swift
36 lines
1.2 KiB
Swift
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import XCTest
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import CoreGraphics
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@testable import NetworkCityCore
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final class LatencyLayoutTests: XCTestCase {
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func testZeroRTTSitsAtInnerRadius() {
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XCTAssertEqual(LatencyLayout.radius(forRTT: 0), LatencyLayout.minRadius, accuracy: 0.001)
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}
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func testCeilingSitsAtOuterEdge() {
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XCTAssertEqual(LatencyLayout.radius(forRTT: 250), LatencyLayout.maxRadius, accuracy: 0.001)
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}
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func testClampsBeyondCeiling() {
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XCTAssertEqual(LatencyLayout.radius(forRTT: 5000), LatencyLayout.maxRadius, accuracy: 0.001)
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}
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func testMonotonicAndWithinBounds() {
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var last = LatencyLayout.radius(forRTT: 0)
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for rtt in stride(from: 5.0, through: 250.0, by: 5) {
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let r = LatencyLayout.radius(forRTT: rtt)
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XCTAssertGreaterThan(r, last) // farther RTT -> farther out
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XCTAssertLessThanOrEqual(r, LatencyLayout.maxRadius)
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last = r
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}
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}
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func testNearRangeSpreadsOut() {
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// The log curve should give the 1–50ms band real separation, not a clump.
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let r10 = LatencyLayout.radius(forRTT: 10)
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let r50 = LatencyLayout.radius(forRTT: 50)
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XCTAssertGreaterThan(r50 - r10, 40) // meaningfully far apart on screen
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}
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}
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