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Implemented the TopWordsUseCase use case in the Filter library.

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This commit is contained in:
Javier Cicchelli 2024-03-18 16:52:19 +01:00
parent b01ec5ec67
commit 75e1e071cf
3 changed files with 168 additions and 5 deletions
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5
Libraries/Filter/Kit/Sources/Use Cases/FilterWordsUseCase.swift
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@ -69,11 +69,6 @@ public struct FilterWordsUseCase {
)
}
print("WORD TERMS: \(terms)")
print("WORD ALL: \(wordsAll)")
print("WORD COUNT: \(wordsCount)")
print("WORD UNIQUE: \(wordsUnique)")
return wordsUnique.sorted {
guard $0.count != $1.count else {
return $0.word.token < $1.word.token

58
Libraries/Filter/Kit/Sources/Use Cases/TopWordsUseCase.swift Normal file
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@ -0,0 +1,58 @@
//
// TopWordsUseCase.swift
// ReviewsParserKit
//
// Created by Javier Cicchelli on 18/03/2024.
// Copyright © 2024 Röck+Cöde VoF. All rights reserved.
//
import Foundation
public struct TopWordsUseCase {
// MARK: Type aliases
public typealias Input = [[WordCount]]
public typealias Output = [WordCount]
// MARK: Initialisers
public init() {}
// MARK: Functions
public func callAsFunction(_ input: Input) -> Output {
let wordCounts = input
.reduce([WordCount](), +)
.reduce(into: [WordCount]()) { partialResult, wordCount in
guard
let wordCountFound = partialResult.first(where: { $0.word == wordCount.word })
else {
partialResult.append(wordCount)
return
}
partialResult.removeAll { $0 == wordCountFound }
partialResult.append(.init(
word: wordCount.word,
count: wordCount.count + wordCountFound.count
))
}
.sorted {
guard $0.count != $1.count else {
return $0.word.token < $1.word.token
}
return $0.count > $1.count
}
return wordCounts.count >= .Max.words
? Array(wordCounts[0...2])
: wordCounts
}
}
// MARK: - Int+Constants
private extension Int {
enum Max {
static let words: Int = 3
}
}

110
Libraries/Filter/Test/Tests/Use Cases/TopWordsUseCaseTests.swift Normal file
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@ -0,0 +1,110 @@
//
// TopWordsUseCaseTests.swift
// ReviewsFilterTest
//
// Created by Javier Cicchelli on 18/03/2024.
// Copyright © 2024 Röck+Cöde VoF. All rights reserved.
//
import ReviewsFilterKit
import XCTest
final class TopWordsUseCaseTests: XCTestCase {
// MARK: Properties
private var input: TopWordsUseCase.Input!
private var output: TopWordsUseCase.Output!
private var sut: TopWordsUseCase!
// MARK: Setup
override func setUp() async throws {
sut = .init()
}
// MARK: Functions
func testCallAsFunction_withInput_hasDifferentWords() {
// GIVEN
input = [[
.init(word: .init(term: "One", token: "one"), count: 3)
], [
.init(word: .init(term: "Two", token: "two"), count: 1)
], [
.init(word: .init(term: "Three", token: "three"), count: 5),
.init(word: .init(term: "Four", token: "four"), count: 2),
]]
// WHEN
output = sut(input)
// THEN
XCTAssertFalse(output.isEmpty)
XCTAssertEqual(output.count, 3)
XCTAssertEqual(output, [
.init(word: .init(term: "Three", token: "three"), count: 5),
.init(word: .init(term: "One", token: "one"), count: 3),
.init(word: .init(term: "Four", token: "four"), count: 2)
])
}
func testCallAsFunction_withInput_hasSomeCommonWords() {
// GIVEN
input = [[
.init(word: .init(term: "One", token: "one"), count: 3),
.init(word: .init(term: "Two", token: "two"), count: 7),
.init(word: .init(term: "Three", token: "three"), count: 1),
], [
.init(word: .init(term: "Four", token: "four"), count: 5),
.init(word: .init(term: "Two", token: "two"), count: 2),
.init(word: .init(term: "Five", token: "five"), count: 6),
], [
.init(word: .init(term: "Six", token: "six"), count: 9),
.init(word: .init(term: "Four", token: "four"), count: 4),
.init(word: .init(term: "Two", token: "two"), count: 1),
]]
// WHEN
output = sut(input)
// THEN
XCTAssertFalse(output.isEmpty)
XCTAssertEqual(output.count, 3)
XCTAssertEqual(output, [
.init(word: .init(term: "Two", token: "two"), count: 10),
.init(word: .init(term: "Four", token: "four"), count: 9),
.init(word: .init(term: "Six", token: "six"), count: 9)
])
}
func testCallAsFunction_withInput_hasFewWords() {
// GIVEN
input = [[
.init(word: .init(term: "One", token: "one"), count: 3),
], [
.init(word: .init(term: "Four", token: "four"), count: 5),
]]
// WHEN
output = sut(input)
// THEN
XCTAssertFalse(output.isEmpty)
XCTAssertEqual(output.count, 2)
XCTAssertEqual(output, [
.init(word: .init(term: "Four", token: "four"), count: 5),
.init(word: .init(term: "One", token: "one"), count: 3)
])
}
func testCallAsFunction_withEmptyInput() {
// GIVEN
input = []
// WHEN
output = sut(input)
// THEN
XCTAssertTrue(output.isEmpty)
XCTAssertEqual(output, [])
}
}