fix for the special case of RSSI=127 from CoreBluetooth and report di…

…stanceMeters=inf in this case + bump version to 1.0.2

BeaconKit.podspec

@@ -4,7 +4,7 @@ filename = File.basename(__FILE__, '.podspec')
 Pod::Spec.new do |s|
 
   s.name         = "#{filename}"
-  s.version      = '1.0.1'
+  s.version      = '1.0.2'
   s.summary      = 'Beacon detection framework using CoreBluetooth'
 
   s.description  = <<~DESC

BeaconKit.xcodeproj/project.pbxproj

@@ -11,6 +11,7 @@
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+		3132635798A134D98632729C48CD7BBA /* BeaconTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = 7D82E210F70917D2A8D7141C2151D641 /* BeaconTests.swift */; };
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 		43CDD2C9519D28C62944401F46E01567 /* Pods_Common_iOS_BeaconKitSample.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = A402F750E9D6E4C6D2195BC0123DD98F /* Pods_Common_iOS_BeaconKitSample.framework */; };
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@@ -21,6 +22,7 @@
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 		7ECD182B19C5D2EB9057A1EB8AB76833 /* main.m in Sources */ = {isa = PBXBuildFile; fileRef = 654F7F1B768E28FA38BB68AF5310EEC9 /* main.m */; };
 		8CDCA5527EB9A56F9A1095C5B2DA502D /* LaunchScreen.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = 803EFC6B427D20D4A61AD319FC4640AC /* LaunchScreen.storyboard */; };
+		920F2A42469289CD19E92BAE4C28BA90 /* BeaconTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = 7D82E210F70917D2A8D7141C2151D641 /* BeaconTests.swift */; };
 		924D836F6511794DE69AA51B931FA2ED /* ViewController.m in Sources */ = {isa = PBXBuildFile; fileRef = 2C38DA49F4E06DFEEBEB70891D78122D /* ViewController.m */; };
 		9711A091CABDDEDF379C46879E93284D /* Benchmark.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4C96373FA24D919BCDCC7EBC587C4088 /* Benchmark.swift */; };
 		9EC22D7E64565461AC2F2E357E9DE8AA /* AppDelegate.swift in Sources */ = {isa = PBXBuildFile; fileRef = A3A1D8793D36CD078AAE5E1B2DEEA520 /* AppDelegate.swift */; };
@@ -79,6 +81,7 @@
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 		764776738EE523A5389C7EA7B1B6B923 /* ViewController.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = ViewController.swift; sourceTree = "<group>"; };
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+		7D82E210F70917D2A8D7141C2151D641 /* BeaconTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = BeaconTests.swift; sourceTree = "<group>"; };
 		87B3CA45A1226569FB77A36192C39F6D /* Pods-Common-iOS-BeaconKitSample.debug.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-Common-iOS-BeaconKitSample.debug.xcconfig"; path = "Pods/Target Support Files/Pods-Common-iOS-BeaconKitSample/Pods-Common-iOS-BeaconKitSample.debug.xcconfig"; sourceTree = "<group>"; };
 		8A74CAB46818993EF777F15BDE4CFA56 /* Info.plist */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.plist.xml; path = Info.plist; sourceTree = "<group>"; };
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@@ -195,6 +198,7 @@
 		28AC8BEF7F3B6F2EEAECFBA4A2568E56 /* BeaconKitTests */ = {
 			isa = PBXGroup;
 			children = (
+				7D82E210F70917D2A8D7141C2151D641 /* BeaconTests.swift */,
 				4C96373FA24D919BCDCC7EBC587C4088 /* Benchmark.swift */,
 				2FD9CD5A4939FA223C8D7C1DEA9B64AE /* EddystoneUidParserTests.swift */,
 				4DBC3AB48B756A366559974153453D0F /* EddystoneUrlParserTests.swift */,
@@ -767,6 +771,7 @@
 			isa = PBXSourcesBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				3132635798A134D98632729C48CD7BBA /* BeaconTests.swift in Sources */,
 				0544FEDC8D94FFDBEF5A3CAE3902F04D /* Benchmark.swift in Sources */,
 				BFA647E6C7BF016E20B5C5911E33FE05 /* EddystoneUidParserTests.swift in Sources */,
 				E274F55BDD8092B0BE036FE286243D46 /* EddystoneUrlParserTests.swift in Sources */,
@@ -786,6 +791,7 @@
 			isa = PBXSourcesBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				920F2A42469289CD19E92BAE4C28BA90 /* BeaconTests.swift in Sources */,
 				9711A091CABDDEDF379C46879E93284D /* Benchmark.swift in Sources */,
 				5DA6CF180EF5CC3A4810DB9A6FBBB7A7 /* EddystoneUidParserTests.swift in Sources */,
 				BE3B08E79EC5CE073D6C37A4D97E9952 /* EddystoneUrlParserTests.swift in Sources */,

BeaconKitTests/BeaconTests.swift

@@ -0,0 +1,36 @@
+//
+//  BeaconTests.swift
+//
+//  Created by Igor Makarov on 25/07/2017.
+//  
+//
+
+import XCTest
+import CoreBluetooth
+@testable import BeaconKit
+
+// swiftlint:disable force_try
+// swiftlint:disable force_unwrapping
+
+class BeaconTests: XCTestCase {
+    let beaconParser = BeaconParser([EddystoneUidBeacon.self])
+
+    override func setUp() {
+        super.setUp()
+        continueAfterFailure = false
+    }
+
+    func test_when_RSSIZero_then_distanceInfinite() {
+        let data = Data.from(hex: "00010001020304050607080901020304050A")
+        let rssi = 0
+        let identifier = UUID()
+        let advertisement = BluetoothAdvertisement.service(CBUUID(string: "FEAA"), data)
+        let beacons = beaconParser.beacons(advertisements: [advertisement], rssi: rssi, identifier: identifier)
+        XCTAssertEqual(beacons.count, 1)
+
+        let beacon = beacons[0] as! EddystoneUidBeacon
+        XCTAssertEqual(beacon.rssi, 0)
+        XCTAssertEqual(beacon.distanceMeters, .infinity)
+    }
+
+}

Sources/Core/Classes/Beacon.swift

@@ -54,10 +54,10 @@ open class Beacon: NSObject {
 
     public var distanceMeters: Double {
         if rssi >= 0 {
-            return 0
+            return .infinity
         }
 
-        let ratio: Double = Double(rssi) / Double(txPower)
+        let ratio = Double(rssi) / Double(txPower)
         if ratio < 1 {
             return pow(ratio, 10)
         } else {

Sources/Core/Classes/BeaconScanner.swift

@@ -71,7 +71,7 @@ extension BeaconScanner: CBCentralManagerDelegate {
             identifier = UUID(uuidString: uuid.uuidString)!
         }
 
-        let rssi = RSSI.intValue
+        let rssi = RSSI.intValue == 127 ? 0 : RSSI.intValue
 
         guard let parsedBeacons = try? _beaconParser.beacons(from: advertisementData, rssi: rssi, identifier: identifier) else { return }