import XCTest
@testable import Closer

final class WordlistTests: XCTestCase {
    func testWordlistMatchesAndroidSource() throws {
        let words = try Wordlist.load()
        // Correction from SPEC.md: the Android source actually has 248 words, not 256.
        XCTAssertEqual(words.count, 248, "Wordlist count must match Android source")

        // All lowercase, no whitespace, no empties.
        for word in words {
            XCTAssertEqual(word, word.lowercased(), "Word must be lowercase: \(word)")
            XCTAssertFalse(word.contains(" "), "Word must not contain whitespace: \(word)")
            XCTAssertFalse(word.isEmpty, "Word must not be empty")
        }

        // All unique.
        let unique = Set(words)
        XCTAssertEqual(unique.count, words.count, "All words must be unique")
    }

    func testWordlistFirstAndLastEntries() throws {
        let words = try Wordlist.load()
        XCTAssertEqual(words.first, "able")
        XCTAssertEqual(words.last, "real")
    }
}