[SwiftLint] Remove identifier_name from disabled_rules

.swiftlint.yml

@@ -1,6 +1,5 @@
 disabled_rules:
   - todo
-  - variable_name
   - force_try
 
 included:
@@ -18,3 +17,16 @@ trailing_comma:
 line_length:
   ignores_comments: true
   ignores_function_declarations: true
+
+identifier_name:
+  max_length: 50
+  excluded:
+    - x
+    - l
+    - r
+    - e
+    - n1
+    - n2
+    - to
+  allowed_symbols:
+      - _

Sources/Nimble/Adapters/AdapterProtocols.swift

@@ -13,5 +13,6 @@ public protocol AssertionHandler {
 ///
 /// @see AssertionHandler
 public var NimbleAssertionHandler: AssertionHandler = { () -> AssertionHandler in
+    // swiftlint:disable:previous identifier_name
     return isXCTestAvailable() ? NimbleXCTestHandler() : NimbleXCTestUnavailableHandler()
 }()

Sources/Nimble/Adapters/NMBExpectation.swift

@@ -30,11 +30,13 @@ internal struct ObjCMatcherWrapper: Matcher {
 
 // Equivalent to Expectation, but for Nimble's Objective-C interface
 public class NMBExpectation: NSObject {
+    // swiftlint:disable identifier_name
     internal let _actualBlock: () -> NSObject?
     internal var _negative: Bool
     internal let _file: FileString
     internal let _line: UInt
     internal var _timeout: TimeInterval = 1.0
+    // swiftlint:enable identifier_name
 
     @objc public init(actualBlock: @escaping () -> NSObject?, negative: Bool, file: FileString, line: UInt) {
         self._actualBlock = actualBlock

Sources/Nimble/Adapters/NMBObjCMatcher.swift

@@ -8,8 +8,10 @@ public typealias FullMatcherBlock = (_ actualExpression: Expression<NSObject>, _
 // swiftlint:enable line_length
 
 public class NMBObjCMatcher: NSObject, NMBMatcher {
+    // swiftlint:disable identifier_name
     let _match: MatcherBlock
     let _doesNotMatch: MatcherBlock
+    // swiftlint:enable identifier_name
     let canMatchNil: Bool
 
     public init(canMatchNil: Bool, matcher: @escaping MatcherBlock, notMatcher: @escaping MatcherBlock) {

Sources/Nimble/DSL.swift

@@ -44,11 +44,12 @@ internal func nimblePrecondition(
         let result = expr()
         if !result {
 #if os(macOS) || os(iOS) || os(tvOS) || os(watchOS)
-            let e = NSException(
+            let exception = NSException(
                 name: NSExceptionName(name()),
                 reason: message(),
-                userInfo: nil)
-            e.raise()
+                userInfo: nil
+            )
+            exception.raise()
 #else
             preconditionFailure("\(name()) - \(message())", file: file, line: line)
 #endif

Sources/Nimble/ExpectationMessage.swift

@@ -75,6 +75,7 @@ public indirect enum ExpectationMessage {
     }
 
     internal func visitLeafs(_ f: (ExpectationMessage) -> ExpectationMessage) -> ExpectationMessage {
+        // swiftlint:disable:previous identifier_name
         switch self {
         case .fail, .expectedTo, .expectedActualValueTo, .expectedCustomValueTo:
             return f(self)
@@ -90,6 +91,7 @@ public indirect enum ExpectationMessage {
     /// Replaces a primary expectation with one returned by f. Preserves all composite expectations
     /// that were built upon it (aka - all appended(message:) and appended(details:).
     public func replacedExpectation(_ f: @escaping (ExpectationMessage) -> ExpectationMessage) -> ExpectationMessage {
+        // swiftlint:disable:previous identifier_name
         func walk(_ msg: ExpectationMessage) -> ExpectationMessage {
             switch msg {
             case .fail, .expectedTo, .expectedActualValueTo, .expectedCustomValueTo:
@@ -181,28 +183,28 @@ public indirect enum ExpectationMessage {
 
 extension FailureMessage {
     internal func toExpectationMessage() -> ExpectationMessage {
-        let defaultMsg = FailureMessage()
-        if expected != defaultMsg.expected || _stringValueOverride != nil {
+        let defaultMessage = FailureMessage()
+        if expected != defaultMessage.expected || _stringValueOverride != nil {
             return .fail(stringValue)
         }
 
-        var msg: ExpectationMessage = .fail(userDescription ?? "")
+        var message: ExpectationMessage = .fail(userDescription ?? "")
         if actualValue != "" && actualValue != nil {
-            msg = .expectedCustomValueTo(postfixMessage, actualValue ?? "")
-        } else if postfixMessage != defaultMsg.postfixMessage {
+            message = .expectedCustomValueTo(postfixMessage, actualValue ?? "")
+        } else if postfixMessage != defaultMessage.postfixMessage {
             if actualValue == nil {
-                msg = .expectedTo(postfixMessage)
+                message = .expectedTo(postfixMessage)
             } else {
-                msg = .expectedActualValueTo(postfixMessage)
+                message = .expectedActualValueTo(postfixMessage)
             }
         }
-        if postfixActual != defaultMsg.postfixActual {
-            msg = .appends(msg, postfixActual)
+        if postfixActual != defaultMessage.postfixActual {
+            message = .appends(message, postfixActual)
         }
-        if let m = extendedMessage {
-            msg = .details(msg, m)
+        if let extended = extendedMessage {
+            message = .details(message, extended)
         }
-        return msg
+        return message
     }
 }
 

Sources/Nimble/Expression.swift

@@ -24,8 +24,10 @@ internal func memoizedClosure<T>(_ closure: @escaping () throws -> T) -> (Bool)
 /// This provides a common consumable API for matchers to utilize to allow
 /// Nimble to change internals to how the captured closure is managed.
 public struct Expression<T> {
+    // swiftlint:disable identifier_name
     internal let _expression: (Bool) throws -> T?
     internal let _withoutCaching: Bool
+    // swiftlint:enable identifier_name
     public let location: SourceLocation
     public let isClosure: Bool
 

Sources/Nimble/FailureMessage.swift

@@ -28,6 +28,7 @@ public class FailureMessage: NSObject {
         }
     }
 
+    // swiftlint:disable:next identifier_name
     internal var _stringValueOverride: String?
     internal var hasOverriddenStringValue: Bool {
         return _stringValueOverride != nil

Sources/Nimble/Matchers/BeCloseTo.swift

@@ -1,5 +1,6 @@
 import Foundation
 
+// swiftlint:disable:next identifier_name
 public let DefaultDelta = 0.0001
 
 internal func isCloseTo(_ actualValue: NMBDoubleConvertible?,
@@ -36,8 +37,10 @@ public func beCloseTo(_ expectedValue: NMBDoubleConvertible, within delta: Doubl
 
 #if os(macOS) || os(iOS) || os(tvOS) || os(watchOS)
 public class NMBObjCBeCloseToMatcher: NSObject, NMBMatcher {
+    // swiftlint:disable identifier_name
     var _expected: NSNumber
     var _delta: CDouble
+    // swiftlint:enable identifier_name
     init(expected: NSNumber, within: CDouble) {
         _expected = expected
         _delta = within
@@ -98,14 +101,17 @@ public func beCloseTo(_ expectedValues: [Double], within delta: Double = Default
 
 infix operator ≈ : ComparisonPrecedence
 
+// swiftlint:disable:next identifier_name
 public func ≈(lhs: Expectation<[Double]>, rhs: [Double]) {
     lhs.to(beCloseTo(rhs))
 }
 
+// swiftlint:disable:next identifier_name
 public func ≈(lhs: Expectation<NMBDoubleConvertible>, rhs: NMBDoubleConvertible) {
     lhs.to(beCloseTo(rhs))
 }
 
+// swiftlint:disable:next identifier_name
 public func ≈(lhs: Expectation<NMBDoubleConvertible>, rhs: (expected: NMBDoubleConvertible, delta: Double)) {
     lhs.to(beCloseTo(rhs.expected, within: rhs.delta))
 }
@@ -121,6 +127,7 @@ precedencegroup PlusMinusOperatorPrecedence {
 }
 
 infix operator ± : PlusMinusOperatorPrecedence
+// swiftlint:disable:next identifier_name
 public func ±(lhs: NMBDoubleConvertible, rhs: Double) -> (expected: NMBDoubleConvertible, delta: Double) {
     return (expected: lhs, delta: rhs)
 }

Sources/Nimble/Matchers/PostNotification.swift

@@ -16,10 +16,10 @@ internal class NotificationCollector {
 
     func startObserving() {
         // swiftlint:disable:next line_length
-        self.token = self.notificationCenter.addObserver(forName: nil, object: nil, queue: nil, using: { [weak self] n in
+        self.token = self.notificationCenter.addObserver(forName: nil, object: nil, queue: nil) { [weak self] notification in
             // linux-swift gets confused by .append(n)
-            self?.observedNotifications.append(n)
-        })
+            self?.observedNotifications.append(notification)
+        }
     }
 
     deinit {

Sources/Nimble/Matchers/Predicate.swift

@@ -218,6 +218,7 @@ extension Predicate: Matcher {
 extension Predicate {
     // Someday, make this public? Needs documentation
     internal func after(f: @escaping (Expression<T>, PredicateResult) throws -> PredicateResult) -> Predicate<T> {
+        // swiftlint:disable:previous identifier_name
         return Predicate { actual -> PredicateResult in
             let result = try self.satisfies(actual)
             return try f(actual, result)

Sources/Nimble/Matchers/RaisesException.swift

@@ -117,10 +117,12 @@ internal func exceptionMatchesNonNilFieldsOrClosure(
 }
 
 public class NMBObjCRaiseExceptionMatcher: NSObject, NMBMatcher {
+    // swiftlint:disable identifier_name
     internal var _name: String?
     internal var _reason: String?
     internal var _userInfo: NSDictionary?
     internal var _block: ((NSException) -> Void)?
+    // swiftlint:enable identifier_name
 
     internal init(name: String?, reason: String?, userInfo: NSDictionary?, block: ((NSException) -> Void)?) {
         _name = name

Sources/Nimble/Utils/Functional.swift

@@ -1,9 +1,9 @@
 import Foundation
 
 extension Sequence {
-    internal func all(_ fn: (Iterator.Element) -> Bool) -> Bool {
+    internal func all(_ predicate: (Iterator.Element) -> Bool) -> Bool {
         for item in self {
-            if !fn(item) {
+            if !predicate(item) {
                 return false
             }
         }

Tests/NimbleTests/Matchers/ThrowErrorTest.swift

@@ -30,8 +30,10 @@ func == (lhs: EquatableError, rhs: EquatableError) -> Bool {
 }
 
 enum CustomDebugStringConvertibleError: Error {
+    // swiftlint:disable identifier_name
     case a
     case b
+    // swiftlint:enable identifier_name
 }
 
 extension CustomDebugStringConvertibleError: CustomDebugStringConvertible {