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//
// LoopMathEffectsTests.swift
// LoopAlgorithm
//
// Created by Nathan Racklyeft on 3/2/16.
// Copyright © 2016 Nathan Racklyeft. All rights reserved.
//
import XCTest
@testable import LoopAlgorithm
typealias RecentGlucoseValue = PredictedGlucoseValue
class LoopMathEffectsTests: XCTestCase {
func loadGlucoseEffectFixture(_ resourceName: String, formatter: ISO8601DateFormatter) -> [GlucoseEffect] {
let fixture: [JSONDictionary] = loadFixture(resourceName)
return fixture.map {
return GlucoseEffect(startDate: formatter.date(from: $0["date"] as! String)!, quantity: LoopQuantity(unit: LoopUnit(from: $0["unit"] as! String), doubleValue:$0["amount"] as! Double))
}
}
func loadGlucoseEffectFixture(_ resourceName: String, formatter: DateFormatter) -> [GlucoseEffect] {
let fixture: [JSONDictionary] = loadFixture(resourceName)
return fixture.map {
return GlucoseEffect(startDate: formatter.date(from: $0["date"] as! String)!, quantity: LoopQuantity(unit: LoopUnit(from: $0["unit"] as! String), doubleValue: $0["value"] as! Double))
}
}
private func printFixture(_ glucoseEffect: [GlucoseEffect]) {
let unit = LoopUnit.milligramsPerDeciliter
print("\n\n")
print(String(data: try! JSONSerialization.data(
withJSONObject: glucoseEffect.map({ (value) -> [String: Any] in
return [
"date": String(describing: value.startDate),
"value": value.quantity.doubleValue(for: unit),
"unit": unit.unitString
]
}),
options: .prettyPrinted), encoding: .utf8)!)
print("\n\n")
}
func loadSampleValueFixture(_ resourceName: String) -> [(startDate: Date, quantity: LoopQuantity)] {
let fixture: [JSONDictionary] = loadFixture(resourceName)
let dateFormatter = ISO8601DateFormatter()
return fixture.map {
(dateFormatter.date(from: $0["startDate"] as! String)!, LoopQuantity(unit: LoopUnit(from: $0["unit"] as! String), doubleValue: $0["value"] as! Double))
}
}
func loadGlucoseHistoryFixture(_ resourceName: String) -> RecentGlucoseValue {
let fixture: [JSONDictionary] = loadFixture(resourceName)
let dateFormatter = ISO8601DateFormatter.localTimeDate()
return fixture.map {
return RecentGlucoseValue(startDate: dateFormatter.date(from: $0["display_time"] as! String)!, quantity: LoopQuantity(unit: LoopUnit.milligramsPerDeciliter, doubleValue:$0["glucose"] as! Double))
}.first!
}
func loadGlucoseValueFixture(_ resourceName: String) -> [PredictedGlucoseValue] {
let fixture: [JSONDictionary] = loadFixture(resourceName)
let dateFormatter = ISO8601DateFormatter.localTimeDate()
return fixture.map {
return PredictedGlucoseValue(startDate: dateFormatter.date(from: $0["date"] as! String)!, quantity: LoopQuantity(unit: LoopUnit(from: $0["unit"] as! String), doubleValue:$0["amount"] as! Double))
}
}
lazy var carbEffect: [GlucoseEffect] = {
return self.loadGlucoseEffectFixture("glucose_from_effects_carb_effect_input", formatter: ISO8601DateFormatter.localTimeDate())
}()
lazy var insulinEffect: [GlucoseEffect] = {
return self.loadGlucoseEffectFixture("glucose_from_effects_insulin_effect_input", formatter: ISO8601DateFormatter.localTimeDate())
}()
func testPredictGlucoseNoMomentum() {
let glucose = loadGlucoseHistoryFixture("glucose_from_effects_glucose_input")
let expected = loadGlucoseValueFixture("glucose_from_effects_no_momentum_output")
let calculated = LoopMath.predictGlucose(startingAt: glucose, effects: carbEffect, insulinEffect)
XCTAssertEqual(expected.count, calculated.count)
for (expected, calculated) in zip(expected, calculated) {
XCTAssertEqual(expected.startDate, calculated.startDate)
XCTAssertEqual(expected.quantity.doubleValue(for: .milligramsPerDeciliter), calculated.quantity.doubleValue(for: .milligramsPerDeciliter), accuracy: Double(Float.ulpOfOne))
}
}
func testPredictGlucoseFlatMomentum() {
let glucose = loadGlucoseHistoryFixture("glucose_from_effects_momentum_flat_glucose_input")
let momentum = loadGlucoseEffectFixture("glucose_from_effects_momentum_flat_input", formatter: ISO8601DateFormatter.localTimeDate())
let expected = loadGlucoseValueFixture("glucose_from_effects_momentum_flat_output")
let calculated = LoopMath.predictGlucose(startingAt: glucose, momentum: momentum, effects: carbEffect, insulinEffect)
XCTAssertEqual(expected.count, calculated.count)
for (expected, calculated) in zip(expected, calculated) {
XCTAssertEqual(expected.startDate, calculated.startDate)
XCTAssertEqual(expected.quantity.doubleValue(for: .milligramsPerDeciliter), calculated.quantity.doubleValue(for: .milligramsPerDeciliter), accuracy: Double(Float.ulpOfOne))
}
}
func testPredictGlucoseUpMomentum() {
let glucose = loadGlucoseHistoryFixture("glucose_from_effects_glucose_input")
let momentum = loadGlucoseEffectFixture("glucose_from_effects_momentum_up_input", formatter: ISO8601DateFormatter.localTimeDate())
let expected = loadGlucoseValueFixture("glucose_from_effects_momentum_up_output")
let calculated = LoopMath.predictGlucose(startingAt: glucose, momentum: momentum, effects: carbEffect, insulinEffect)
XCTAssertEqual(expected.count, calculated.count)
for (expected, calculated) in zip(expected, calculated) {
XCTAssertEqual(expected.startDate, calculated.startDate)
XCTAssertEqual(expected.quantity.doubleValue(for: .milligramsPerDeciliter), calculated.quantity.doubleValue(for: .milligramsPerDeciliter), accuracy: Double(Float.ulpOfOne))
}
}
func testPredictGlucoseDownMomentum() {
let glucose = loadGlucoseHistoryFixture("glucose_from_effects_glucose_input")
let momentum = loadGlucoseEffectFixture("glucose_from_effects_momentum_down_input", formatter: ISO8601DateFormatter.localTimeDate())
let expected = loadGlucoseValueFixture("glucose_from_effects_momentum_down_output")
let calculated = LoopMath.predictGlucose(startingAt: glucose, momentum: momentum, effects: carbEffect, insulinEffect)
XCTAssertEqual(expected.count, calculated.count)
for (expected, calculated) in zip(expected, calculated) {
XCTAssertEqual(expected.startDate, calculated.startDate)
XCTAssertEqual(expected.quantity.doubleValue(for: .milligramsPerDeciliter), calculated.quantity.doubleValue(for: .milligramsPerDeciliter), accuracy: Double(Float.ulpOfOne))
}
}
func testPredictGlucoseBlendMomentum() {
let glucose = loadGlucoseHistoryFixture("glucose_from_effects_momentum_blend_glucose_input")
let momentum = loadGlucoseEffectFixture("glucose_from_effects_momentum_blend_momentum_input", formatter: ISO8601DateFormatter.localTimeDate())
let insulinEffect = loadGlucoseEffectFixture("glucose_from_effects_momentum_blend_insulin_effect_input", formatter: ISO8601DateFormatter.localTimeDate())
let expected = loadGlucoseValueFixture("glucose_from_effects_momentum_blend_output")
let calculated = LoopMath.predictGlucose(startingAt: glucose, momentum: momentum, effects: insulinEffect)
XCTAssertEqual(expected.count, calculated.count)
for (expected, calculated) in zip(expected, calculated) {
XCTAssertEqual(expected.startDate, calculated.startDate)
XCTAssertEqual(expected.quantity.doubleValue(for: .milligramsPerDeciliter), calculated.quantity.doubleValue(for: .milligramsPerDeciliter), accuracy: Double(Float.ulpOfOne))
}
}
func testPredictGlucoseStartingEffectsNonZero() {
let glucose = loadSampleValueFixture("glucose_from_effects_non_zero_glucose_input").first!
let insulinEffect = loadSampleValueFixture("glucose_from_effects_non_zero_insulin_input").map {
GlucoseEffect(startDate: $0.startDate, quantity: $0.quantity)
}
let carbEffect = loadSampleValueFixture("glucose_from_effects_non_zero_carb_input").map {
GlucoseEffect(startDate: $0.startDate, quantity: $0.quantity)
}
let expected = loadSampleValueFixture("glucose_from_effects_non_zero_output").map {
GlucoseEffect(startDate: $0.startDate, quantity: $0.quantity)
}
let calculated = LoopMath.predictGlucose(startingAt: RecentGlucoseValue(startDate: glucose.startDate, quantity: glucose.quantity),
effects: insulinEffect, carbEffect
)
XCTAssertEqual(expected.count, calculated.count)
for (expected, calculated) in zip(expected, calculated) {
XCTAssertEqual(expected.startDate, calculated.startDate)
XCTAssertEqual(expected.quantity.doubleValue(for: .milligramsPerDeciliter), calculated.quantity.doubleValue(for: .milligramsPerDeciliter), accuracy: Double(Float.ulpOfOne))
}
}
func testDecayEffect() {
let calendar = Calendar(identifier: Calendar.Identifier.gregorian)
let glucoseDate = calendar.date(from: DateComponents(year: 2016, month: 2, day: 1, hour: 10, minute: 13, second: 20))!
let unit = LoopUnit.milligramsPerDeciliter
let glucose = FixtureGlucoseSample(startDate: glucoseDate, mgdl: 100)
var startingEffect = LoopQuantity(unit: .milligramsPerDeciliterPerMinute, doubleValue: 2)
var effects = glucose.decayEffect(atRate: startingEffect, for: .minutes(30))
// decayEffect is now a continuous function of the (unaligned) sample
// timestamp: the 10:13:20 glucose sits 1m40s before the first 5-min grid
// point, so the values interpolate rather than snapping to the grid.
// (testDecayEffectWithEvenGlucose, aligned to :00, still gives the integer
// grid values.) Irrational decimals, so compare with accuracy.
func assertEqual(_ expected: [Double], _ actual: [Double], line: UInt = #line) {
XCTAssertEqual(expected.count, actual.count, line: line)
for (e, a) in zip(expected, actual) { XCTAssertEqual(e, a, accuracy: 1e-6, line: line) }
}
assertEqual([100, 103.555556, 112.888889, 120.222222, 125.555556, 128.888889, 130.222222],
effects.map { $0.quantity.doubleValue(for: unit) })
let startDate = effects.first!.startDate
XCTAssertEqual([0, 5, 10, 15, 20, 25, 30], effects.map { $0.startDate.timeIntervalSince(startDate).minutes })
startingEffect = LoopQuantity(unit: .milligramsPerDeciliterPerMinute, doubleValue: -0.5)
effects = glucose.decayEffect(atRate: startingEffect, for: .minutes(30))
assertEqual([100, 99.111111, 96.777778, 94.944444, 93.611111, 92.777778, 92.444444],
effects.map { $0.quantity.doubleValue(for: unit) })
}
func testDecayEffectWithEvenGlucose() {
let calendar = Calendar(identifier: Calendar.Identifier.gregorian)
let glucoseDate = calendar.date(from: DateComponents(year: 2016, month: 2, day: 1, hour: 10, minute: 15, second: 0))!
let unit = LoopUnit.milligramsPerDeciliter
let glucose = FixtureGlucoseSample(startDate: glucoseDate, mgdl: 100)
var startingEffect = LoopQuantity(unit: .milligramsPerDeciliterPerMinute, doubleValue: 2)
var effects = glucose.decayEffect(atRate: startingEffect, for: .minutes(30))
XCTAssertEqual([100, 110, 118, 124, 128, 130], effects.map { $0.quantity.doubleValue(for: unit) })
let startDate = effects.first!.startDate
XCTAssertEqual([0, 5, 10, 15, 20, 25], effects.map { $0.startDate.timeIntervalSince(startDate).minutes })
startingEffect = LoopQuantity(unit: .milligramsPerDeciliterPerMinute, doubleValue: -0.5)
effects = glucose.decayEffect(atRate: startingEffect, for: .minutes(30))
XCTAssertEqual([100, 97.5, 95.5, 94, 93, 92.5], effects.map { $0.quantity.doubleValue(for: unit) })
}
func testSubtractingCarbEffectFromICEWithGaps() {
let perMinute = LoopUnit.milligramsPerDeciliterPerMinute
let mgdl = LoopUnit.milligramsPerDeciliter
let formatter = DateFormatter.descriptionFormatter
let f = { (input) in
return formatter.date(from: input)!
}
let insulinCounteractionEffects = [
GlucoseEffectVelocity(startDate: f("2018-08-16 01:03:43 +0000"), endDate: f("2018-08-16 01:08:43 +0000"), quantity: LoopQuantity(unit: perMinute, doubleValue: -0.0063630385383878375)),
GlucoseEffectVelocity(startDate: f("2018-08-16 01:08:43 +0000"), endDate: f("2018-08-16 01:13:44 +0000"), quantity: LoopQuantity(unit: perMinute, doubleValue: 0.3798225216554212)),
GlucoseEffectVelocity(startDate: f("2018-08-16 01:13:44 +0000"), endDate: f("2018-08-16 01:18:44 +0000"), quantity: LoopQuantity(unit: perMinute, doubleValue: 0.5726970790754702)),
GlucoseEffectVelocity(startDate: f("2018-08-16 01:18:44 +0000"), endDate: f("2018-08-16 01:23:44 +0000"), quantity: LoopQuantity(unit: perMinute, doubleValue: 0.7936837738660198)),
GlucoseEffectVelocity(startDate: f("2018-08-16 01:23:44 +0000"), endDate: f("2018-08-16 01:28:43 +0000"), quantity: LoopQuantity(unit: perMinute, doubleValue: 1.2143200509835315)),
GlucoseEffectVelocity(startDate: f("2018-08-16 01:28:43 +0000"), endDate: f("2018-08-16 02:03:43 +0000"), quantity: LoopQuantity(unit: perMinute, doubleValue: 1.214239367352738)),
GlucoseEffectVelocity(startDate: f("2018-08-16 02:03:43 +0000"), endDate: f("2018-08-16 03:13:44 +0000"), quantity: LoopQuantity(unit: perMinute, doubleValue: 0.64964443000756)),
GlucoseEffectVelocity(startDate: f("2018-08-16 03:13:44 +0000"), endDate: f("2018-08-16 03:18:44 +0000"), quantity: LoopQuantity(unit: perMinute, doubleValue: 0.40933503856266396)),
GlucoseEffectVelocity(startDate: f("2018-08-16 03:18:44 +0000"), endDate: f("2018-08-16 03:23:43 +0000"), quantity: LoopQuantity(unit: perMinute, doubleValue: 0.5994115966821696)),
GlucoseEffectVelocity(startDate: f("2018-08-16 03:23:43 +0000"), endDate: f("2018-08-16 03:28:44 +0000"), quantity: LoopQuantity(unit: perMinute, doubleValue: 0.640336708627245)),
GlucoseEffectVelocity(startDate: f("2018-08-16 03:28:44 +0000"), endDate: f("2018-08-16 03:33:43 +0000"), quantity: LoopQuantity(unit: perMinute, doubleValue: 1.5109774027636143)),
GlucoseEffectVelocity(startDate: f("2018-08-16 03:33:43 +0000"), endDate: f("2018-08-16 03:38:43 +0000"), quantity: LoopQuantity(unit: perMinute, doubleValue: -1.6358198764701966)),
GlucoseEffectVelocity(startDate: f("2018-08-16 03:38:43 +0000"), endDate: f("2018-08-16 03:43:44 +0000"), quantity: LoopQuantity(unit: perMinute, doubleValue: 0.4187533857556986)),
GlucoseEffectVelocity(startDate: f("2018-08-16 03:43:44 +0000"), endDate: f("2018-08-16 03:48:43 +0000"), quantity: LoopQuantity(unit: perMinute, doubleValue: -1.136005257968153)),
GlucoseEffectVelocity(startDate: f("2018-08-16 03:48:43 +0000"), endDate: f("2018-08-16 03:53:44 +0000"), quantity: LoopQuantity(unit: perMinute, doubleValue: -0.29635521996668046)),
GlucoseEffectVelocity(startDate: f("2018-08-16 03:53:44 +0000"), endDate: f("2018-08-16 03:58:43 +0000"), quantity: LoopQuantity(unit: perMinute, doubleValue: -1.070285990192832)),
GlucoseEffectVelocity(startDate: f("2018-08-16 03:58:43 +0000"), endDate: f("2018-08-16 04:03:43 +0000"), quantity: LoopQuantity(unit: perMinute, doubleValue: -0.25025410282677996)),
GlucoseEffectVelocity(startDate: f("2018-08-16 04:03:43 +0000"), endDate: f("2018-08-16 04:08:43 +0000"), quantity: LoopQuantity(unit: perMinute, doubleValue: 0.5598990284715561)),
GlucoseEffectVelocity(startDate: f("2018-08-16 04:08:43 +0000"), endDate: f("2018-08-16 04:13:44 +0000"), quantity: LoopQuantity(unit: perMinute, doubleValue: 1.9616378142801167)),
GlucoseEffectVelocity(startDate: f("2018-08-16 04:13:44 +0000"), endDate: f("2018-08-16 04:18:43 +0000"), quantity: LoopQuantity(unit: perMinute, doubleValue: 1.7593854114682483)),
GlucoseEffectVelocity(startDate: f("2018-08-16 04:18:43 +0000"), endDate: f("2018-08-16 04:23:44 +0000"), quantity: LoopQuantity(unit: perMinute, doubleValue: 0.5467358931981837)),
GlucoseEffectVelocity(startDate: f("2018-08-16 04:23:44 +0000"), endDate: f("2018-08-16 04:28:44 +0000"), quantity: LoopQuantity(unit: perMinute, doubleValue: 0.9335047268082058)),
GlucoseEffectVelocity(startDate: f("2018-08-16 04:28:44 +0000"), endDate: f("2018-08-16 04:33:43 +0000"), quantity: LoopQuantity(unit: perMinute, doubleValue: -0.2823274349191665)),
]
let carbEffects = [
GlucoseEffect(startDate: f("2018-08-16 01:00:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 69.38642455065255)),
GlucoseEffect(startDate: f("2018-08-16 01:05:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 69.38642455065255)),
GlucoseEffect(startDate: f("2018-08-16 01:10:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 72.18741125500856)),
GlucoseEffect(startDate: f("2018-08-16 01:15:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 82.00120184863087)),
GlucoseEffect(startDate: f("2018-08-16 01:20:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 90.79285286260895)),
GlucoseEffect(startDate: f("2018-08-16 01:25:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 93.5316456300059)),
GlucoseEffect(startDate: f("2018-08-16 01:30:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 98.19664696604428)),
GlucoseEffect(startDate: f("2018-08-16 01:35:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 98.5800323225078)),
GlucoseEffect(startDate: f("2018-08-16 01:40:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 100.09237800152016)),
GlucoseEffect(startDate: f("2018-08-16 01:45:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 101.60472368053252)),
GlucoseEffect(startDate: f("2018-08-16 01:50:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 103.11706935954487)),
GlucoseEffect(startDate: f("2018-08-16 01:55:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 104.6294150385572)),
GlucoseEffect(startDate: f("2018-08-16 02:00:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 129.38642455065255)),
GlucoseEffect(startDate: f("2018-08-16 02:05:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 129.38642455065255)),
GlucoseEffect(startDate: f("2018-08-16 02:10:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 132.18741125500856)),
GlucoseEffect(startDate: f("2018-08-16 02:15:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 142.00120184863087)),
GlucoseEffect(startDate: f("2018-08-16 02:20:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 150.79285286260895)),
GlucoseEffect(startDate: f("2018-08-16 02:25:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 153.5316456300059)),
GlucoseEffect(startDate: f("2018-08-16 02:30:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 158.19664696604428)),
GlucoseEffect(startDate: f("2018-08-16 02:35:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 158.5800323225078)),
GlucoseEffect(startDate: f("2018-08-16 02:40:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 160.09237800152016)),
GlucoseEffect(startDate: f("2018-08-16 02:45:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 161.60472368053252)),
GlucoseEffect(startDate: f("2018-08-16 02:50:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 163.11706935954487)),
GlucoseEffect(startDate: f("2018-08-16 02:55:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 164.6294150385572)),
GlucoseEffect(startDate: f("2018-08-16 03:00:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 166.14176071756955)),
GlucoseEffect(startDate: f("2018-08-16 03:05:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 167.65410639658188)),
GlucoseEffect(startDate: f("2018-08-16 03:10:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 169.16645207559424)),
GlucoseEffect(startDate: f("2018-08-16 03:15:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 170.6787977546066)),
GlucoseEffect(startDate: f("2018-08-16 03:20:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 172.19114343361895)),
GlucoseEffect(startDate: f("2018-08-16 03:25:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 173.70348911263127)),
GlucoseEffect(startDate: f("2018-08-16 03:30:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 175.21583479164363)),
GlucoseEffect(startDate: f("2018-08-16 03:35:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 176.72818047065596)),
GlucoseEffect(startDate: f("2018-08-16 03:40:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 178.2405261496683)),
GlucoseEffect(startDate: f("2018-08-16 03:45:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 179.75287182868067)),
GlucoseEffect(startDate: f("2018-08-16 03:50:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 181.26521750769302)),
GlucoseEffect(startDate: f("2018-08-16 03:55:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 182.77756318670535)),
GlucoseEffect(startDate: f("2018-08-16 04:00:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 189.38642455065255)),
GlucoseEffect(startDate: f("2018-08-16 04:05:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 189.38642455065255)),
GlucoseEffect(startDate: f("2018-08-16 04:10:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 192.18741125500856)),
GlucoseEffect(startDate: f("2018-08-16 04:15:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 202.00120184863087)),
GlucoseEffect(startDate: f("2018-08-16 04:20:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 210.79285286260895)),
GlucoseEffect(startDate: f("2018-08-16 04:25:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 213.5316456300059)),
GlucoseEffect(startDate: f("2018-08-16 04:30:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 218.19664696604428)),
GlucoseEffect(startDate: f("2018-08-16 04:35:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 218.5800323225078)),
GlucoseEffect(startDate: f("2018-08-16 04:40:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 220.09237800152016)),
GlucoseEffect(startDate: f("2018-08-16 04:45:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 221.60472368053252)),
GlucoseEffect(startDate: f("2018-08-16 04:50:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 223.11706935954487)),
GlucoseEffect(startDate: f("2018-08-16 04:55:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 224.6294150385572)),
GlucoseEffect(startDate: f("2018-08-16 05:00:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 226.14176071756955)),
GlucoseEffect(startDate: f("2018-08-16 05:05:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 227.65410639658188)),
GlucoseEffect(startDate: f("2018-08-16 05:10:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 229.16645207559424)),
GlucoseEffect(startDate: f("2018-08-16 05:15:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 230.6787977546066)),
GlucoseEffect(startDate: f("2018-08-16 05:20:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 232.19114343361895)),
GlucoseEffect(startDate: f("2018-08-16 05:25:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 233.70348911263127)),
GlucoseEffect(startDate: f("2018-08-16 05:30:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 235.21583479164363)),
GlucoseEffect(startDate: f("2018-08-16 05:35:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 236.72818047065596)),
GlucoseEffect(startDate: f("2018-08-16 05:40:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 238.2405261496683)),
GlucoseEffect(startDate: f("2018-08-16 05:45:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 239.75287182868067)),
GlucoseEffect(startDate: f("2018-08-16 05:50:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 241.26521750769302)),
GlucoseEffect(startDate: f("2018-08-16 05:55:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 242.77756318670535)),
GlucoseEffect(startDate: f("2018-08-16 06:00:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 244.28990886571768)),
GlucoseEffect(startDate: f("2018-08-16 06:05:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 245.80225454473003)),
GlucoseEffect(startDate: f("2018-08-16 06:10:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 247.3146002237424)),
GlucoseEffect(startDate: f("2018-08-16 06:15:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 248.82694590275474)),
GlucoseEffect(startDate: f("2018-08-16 06:20:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 250.33929158176707)),
GlucoseEffect(startDate: f("2018-08-16 06:25:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 251.85163726077943)),
GlucoseEffect(startDate: f("2018-08-16 06:30:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 253.16666666666669)),
GlucoseEffect(startDate: f("2018-08-16 06:35:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 253.16666666666669)),
GlucoseEffect(startDate: f("2018-08-16 06:40:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 253.16666666666669)),
]
let calculated = insulinCounteractionEffects.subtracting(carbEffects, withUniformInterval: .minutes(5))
let expected = loadGlucoseEffectFixture("ice_minus_carb_effect_with_gaps_output", formatter: DateFormatter.descriptionFormatter)
XCTAssertSampleValueEqual(expected, calculated)
}
func testSubtractingFlatCarbEffectFromICE() {
let perMinute = LoopUnit.milligramsPerDeciliterPerMinute
let mgdl = LoopUnit.milligramsPerDeciliter
let formatter = DateFormatter.descriptionFormatter
let f = { (input) in
return formatter.date(from: input)!
}
let insulinCounteractionEffects = [
GlucoseEffectVelocity(startDate: f("2018-08-26 00:23:27 +0000"), endDate: f("2018-08-26 00:28:28 +0000"), quantity: LoopQuantity(unit: perMinute, doubleValue: 0.3711911901542791)),
GlucoseEffectVelocity(startDate: f("2018-08-26 00:28:28 +0000"), endDate: f("2018-08-26 00:33:27 +0000"), quantity: LoopQuantity(unit: perMinute, doubleValue: -0.4382943196158106)),
GlucoseEffectVelocity(startDate: f("2018-08-26 00:33:27 +0000"), endDate: f("2018-08-26 00:38:27 +0000"), quantity: LoopQuantity(unit: perMinute, doubleValue: -0.24797050925219474)),
GlucoseEffectVelocity(startDate: f("2018-08-26 00:38:27 +0000"), endDate: f("2018-08-26 00:43:28 +0000"), quantity: LoopQuantity(unit: perMinute, doubleValue: -0.05800368381887202)),
GlucoseEffectVelocity(startDate: f("2018-08-26 00:43:28 +0000"), endDate: f("2018-08-26 00:48:28 +0000"), quantity: LoopQuantity(unit: perMinute, doubleValue: 0.7303422936657988)),
GlucoseEffectVelocity(startDate: f("2018-08-26 00:48:28 +0000"), endDate: f("2018-08-26 00:53:28 +0000"), quantity: LoopQuantity(unit: perMinute, doubleValue: 0.7166291304729353)),
GlucoseEffectVelocity(startDate: f("2018-08-26 00:53:28 +0000"), endDate: f("2018-08-26 00:58:28 +0000"), quantity: LoopQuantity(unit: perMinute, doubleValue: 0.2962279320324577)),
GlucoseEffectVelocity(startDate: f("2018-08-26 00:58:28 +0000"), endDate: f("2018-08-26 01:03:27 +0000"), quantity: LoopQuantity(unit: perMinute, doubleValue: 0.2730196016663657)),
GlucoseEffectVelocity(startDate: f("2018-08-26 01:03:27 +0000"), endDate: f("2018-08-26 01:08:28 +0000"), quantity: LoopQuantity(unit: perMinute, doubleValue: 0.44605609358758713)),
GlucoseEffectVelocity(startDate: f("2018-08-26 01:08:28 +0000"), endDate: f("2018-08-26 01:13:28 +0000"), quantity: LoopQuantity(unit: perMinute, doubleValue: 0.42131971635266463)),
GlucoseEffectVelocity(startDate: f("2018-08-26 01:13:28 +0000"), endDate: f("2018-08-26 01:18:27 +0000"), quantity: LoopQuantity(unit: perMinute, doubleValue: 0.9948293689475411)),
GlucoseEffectVelocity(startDate: f("2018-08-26 01:18:27 +0000"), endDate: f("2018-08-26 01:23:28 +0000"), quantity: LoopQuantity(unit: perMinute, doubleValue: 0.9652238210644638)),
]
let carbEffects = [
GlucoseEffect(startDate: f("2018-08-26 00:45:00 +0000"), quantity: LoopQuantity(unit: mgdl, doubleValue: 385.8235294117647))
]
let calculated = insulinCounteractionEffects.subtracting(carbEffects, withUniformInterval: .minutes(5))
let expected = loadGlucoseEffectFixture("ice_minus_flat_carb_effect_output", formatter: DateFormatter.descriptionFormatter)
XCTAssertSampleValueEqual(expected, calculated)
}
func testCombinedSumsWithGaps() {
let input = loadGlucoseEffectFixture("ice_minus_carb_effect_with_gaps_output", formatter: DateFormatter.descriptionFormatter)
let unit = LoopUnit.milligramsPerDeciliter
let formatter = DateFormatter.descriptionFormatter
let f = { (input) in
return formatter.date(from: input)!
}
let expected = [
GlucoseChange(startDate: f("2018-08-16 01:13:44 +0000"), endDate: f("2018-08-16 01:13:44 +0000"), quantity: LoopQuantity(unit: unit, doubleValue: -7.914677985345208)),
GlucoseChange(startDate: f("2018-08-16 01:13:44 +0000"), endDate: f("2018-08-16 01:18:44 +0000"), quantity: LoopQuantity(unit: unit, doubleValue: -13.84284360394594)),
GlucoseChange(startDate: f("2018-08-16 01:13:44 +0000"), endDate: f("2018-08-16 01:23:44 +0000"), quantity: LoopQuantity(unit: unit, doubleValue: -12.613217502012784)),
GlucoseChange(startDate: f("2018-08-16 01:13:44 +0000"), endDate: f("2018-08-16 01:28:43 +0000"), quantity: LoopQuantity(unit: unit, doubleValue: -11.206618583133514)),
GlucoseChange(startDate: f("2018-08-16 02:03:43 +0000"), endDate: f("2018-08-16 02:03:43 +0000"), quantity: LoopQuantity(unit: unit, doubleValue: 6.071196836763691)),
GlucoseChange(startDate: f("2018-08-16 03:13:44 +0000"), endDate: f("2018-08-16 03:13:44 +0000"), quantity: LoopQuantity(unit: unit, doubleValue: 1.735876471025445)),
GlucoseChange(startDate: f("2018-08-16 03:13:44 +0000"), endDate: f("2018-08-16 03:18:44 +0000"), quantity: LoopQuantity(unit: unit, doubleValue: 2.2702059848264096)),
GlucoseChange(startDate: f("2018-08-16 03:13:44 +0000"), endDate: f("2018-08-16 03:23:43 +0000"), quantity: LoopQuantity(unit: unit, doubleValue: 3.754918289224931)),
GlucoseChange(startDate: f("2018-08-16 03:13:44 +0000"), endDate: f("2018-08-16 03:28:44 +0000"), quantity: LoopQuantity(unit: unit, doubleValue: 5.444256153348801)),
GlucoseChange(startDate: f("2018-08-16 03:13:44 +0000"), endDate: f("2018-08-16 03:33:43 +0000"), quantity: LoopQuantity(unit: unit, doubleValue: 11.486797488154545)),
GlucoseChange(startDate: f("2018-08-16 03:13:44 +0000"), endDate: f("2018-08-16 03:38:43 +0000"), quantity: LoopQuantity(unit: unit, doubleValue: 1.7953524267912058)),
GlucoseChange(startDate: f("2018-08-16 03:13:44 +0000"), endDate: f("2018-08-16 03:43:44 +0000"), quantity: LoopQuantity(unit: unit, doubleValue: 2.376773676557343)),
GlucoseChange(startDate: f("2018-08-16 03:18:44 +0000"), endDate: f("2018-08-16 03:48:43 +0000"), quantity: LoopQuantity(unit: unit, doubleValue: -6.551474763321222)),
GlucoseChange(startDate: f("2018-08-16 03:28:44 +0000"), endDate: f("2018-08-16 03:53:44 +0000"), quantity: LoopQuantity(unit: unit, doubleValue: -11.56463836036644)),
GlucoseChange(startDate: f("2018-08-16 03:28:44 +0000"), endDate: f("2018-08-16 03:58:43 +0000"), quantity: LoopQuantity(unit: unit, doubleValue: -23.524929675277797)),
GlucoseChange(startDate: f("2018-08-16 03:33:43 +0000"), endDate: f("2018-08-16 04:03:43 +0000"), quantity: LoopQuantity(unit: unit, doubleValue: -26.46553805353557)),
GlucoseChange(startDate: f("2018-08-16 03:38:43 +0000"), endDate: f("2018-08-16 04:08:43 +0000"), quantity: LoopQuantity(unit: unit, doubleValue: -32.50957095033954)),
GlucoseChange(startDate: f("2018-08-16 03:43:44 +0000"), endDate: f("2018-08-16 04:13:44 +0000"), quantity: LoopQuantity(unit: unit, doubleValue: -22.823727411197925)),
GlucoseChange(startDate: f("2018-08-16 03:48:43 +0000"), endDate: f("2018-08-16 04:18:43 +0000"), quantity: LoopQuantity(unit: unit, doubleValue: -23.399872617600906)),
GlucoseChange(startDate: f("2018-08-16 03:53:44 +0000"), endDate: f("2018-08-16 04:23:44 +0000"), quantity: LoopQuantity(unit: unit, doubleValue: -16.21261395015381)),
GlucoseChange(startDate: f("2018-08-16 04:03:43 +0000"), endDate: f("2018-08-16 04:28:44 +0000"), quantity: LoopQuantity(unit: unit, doubleValue: -1.2556785583940788)),
GlucoseChange(startDate: f("2018-08-16 04:03:43 +0000"), endDate: f("2018-08-16 04:33:43 +0000"), quantity: LoopQuantity(unit: unit, doubleValue: -3.0507010894534323))
]
let calculated = input.combinedSums(of: .minutes(30))
XCTAssertSampleValueEqual(expected, calculated)
}
func testNetEffect() {
let formatter = DateFormatter.descriptionFormatter
let f = { (input) in
return formatter.date(from: input)!
}
let unit = LoopUnit.milligramsPerDeciliter
let input = [
GlucoseEffect(startDate: f("2018-08-16 01:00:00 +0000"), quantity: LoopQuantity(unit: unit, doubleValue: 25)),
GlucoseEffect(startDate: f("2018-08-16 01:05:00 +0000"), quantity: LoopQuantity(unit: unit, doubleValue: 26)),
GlucoseEffect(startDate: f("2018-08-16 01:10:00 +0000"), quantity: LoopQuantity(unit: unit, doubleValue: 27))
]
let calculated = input.netEffect()
let expected = GlucoseChange(
startDate: f("2018-08-16 01:00:00 +0000"),
endDate: f("2018-08-16 01:10:00 +0000"),
quantity: LoopQuantity(unit: unit, doubleValue: 2))
XCTAssertEqual(expected, calculated)
}
func testDateRange() {
let formatter = DateFormatter.descriptionFormatter
let f = { (input) in
return formatter.date(from: input)!
}
let expected = [
f("2018-08-16 01:00:00 +0000"),
f("2018-08-16 01:05:00 +0000"),
f("2018-08-16 01:10:00 +0000"),
f("2018-08-16 01:15:00 +0000"),
f("2018-08-16 01:20:00 +0000"),
f("2018-08-16 01:25:00 +0000"),
f("2018-08-16 01:30:00 +0000"),
f("2018-08-16 01:35:00 +0000"),
f("2018-08-16 01:40:00 +0000"),
f("2018-08-16 01:45:00 +0000"),
f("2018-08-16 01:50:00 +0000"),
f("2018-08-16 01:55:00 +0000"),
f("2018-08-16 02:00:00 +0000"),
f("2018-08-16 02:05:00 +0000"),
f("2018-08-16 02:10:00 +0000"),
f("2018-08-16 02:15:00 +0000"),
f("2018-08-16 02:20:00 +0000"),
f("2018-08-16 02:25:00 +0000"),
f("2018-08-16 02:30:00 +0000"),
f("2018-08-16 02:35:00 +0000"),
f("2018-08-16 02:40:00 +0000"),
f("2018-08-16 02:45:00 +0000"),
f("2018-08-16 02:50:00 +0000"),
f("2018-08-16 02:55:00 +0000"),
f("2018-08-16 03:00:00 +0000"),
f("2018-08-16 03:05:00 +0000"),
f("2018-08-16 03:10:00 +0000")
]
let roundedStartDate = f("2018-08-16 01:00:00 +0000")
let unroundedStartDate = f("2018-08-16 01:04:13 +0000")
let roundedEndDate = f("2018-08-16 03:10:00 +0000")
let unroundedEndDate = f("2018-08-16 03:06:29 +0000")
let roundedOutput = LoopMath.simulationDateRange(from: roundedStartDate, to: roundedEndDate, delta: .minutes(5))
XCTAssertEqual(expected, roundedOutput)
let unroundedOutput = LoopMath.simulationDateRange(from: unroundedStartDate, to: unroundedEndDate, delta: .minutes(5))
XCTAssertEqual(expected, unroundedOutput)
let differentDeltaExpected = expected
.enumerated()
.compactMap { $0.offset.isMultiple(of: 2) ? $0.element : nil }
let differentDeltaOutput = LoopMath.simulationDateRange(from: unroundedStartDate, to: unroundedEndDate, delta: .minutes(10))
XCTAssertEqual(differentDeltaExpected, differentDeltaOutput)
}
}
func XCTAssertSampleValueEqual<T: SampleValue>(_ expression1: [T], _ expression2: [T], value: (T) -> Double, _ message: @autoclosure () -> String = "", file: StaticString = #filePath, line: UInt = #line) {
XCTAssertEqual(expression1.map(\.startDate), expression2.map(\.startDate), message(), file: file, line: line)
XCTAssertEqual(expression1.map(\.endDate), expression2.map(\.endDate), message(), file: file, line: line)
XCTAssertEqual(expression1.count, expression2.count, message(), file: file, line: line)
for (effect, mirroredEffect) in zip(expression1, expression2) {
XCTAssertEqual(value(effect), value(mirroredEffect), accuracy: 0.0000000001, message(), file: file, line: line)
}
}
func XCTAssertSampleValueEqual(_ expression1: [GlucoseEffect], _ expression2: [GlucoseEffect], _ message: @autoclosure () -> String = "", file: StaticString = #filePath, line: UInt = #line) {
XCTAssertSampleValueEqual(expression1, expression2, value: \.mgdl, message(), file: file, line: line)
}
func XCTAssertSampleValueEqual(_ expression1: [GlucoseChange], _ expression2: [GlucoseChange], _ message: @autoclosure () -> String = "", file: StaticString = #filePath, line: UInt = #line) {
XCTAssertSampleValueEqual(expression1, expression2, value: \.mgdl, message(), file: file, line: line)
}