mirror of
https://github.com/metabolist/metatext.git
synced 2024-07-04 12:45:51 +00:00
50 lines
1.6 KiB
Swift
50 lines
1.6 KiB
Swift
// Copyright © 2020 Metabolist. All rights reserved.
|
|
|
|
@testable import CodableBloomFilter
|
|
import XCTest
|
|
|
|
final class CodableBloomFilterTests: XCTestCase {
|
|
func testHashers() {
|
|
XCTAssertEqual(DeterministicHasher.djb2.apply("hash"), 6385287881)
|
|
XCTAssertEqual(DeterministicHasher.djb2a.apply("hash"), 2087809207)
|
|
XCTAssertEqual(DeterministicHasher.sdbm.apply("hash"), 29358318056884782)
|
|
XCTAssertEqual(DeterministicHasher.fnv1.apply("hash"), 0xd7918815)
|
|
XCTAssertEqual(DeterministicHasher.fnv1a.apply("hash"), 0xcec577d1)
|
|
}
|
|
|
|
func testContains() {
|
|
var sut = BloomFilter<String>(hashers: [.djb2, .sdbm, .fnv1, .fnv1a], byteCount: 128)
|
|
|
|
sut.insert("lol")
|
|
sut.insert("ok")
|
|
|
|
XCTAssert(sut.contains("lol"))
|
|
XCTAssert(sut.contains("ok"))
|
|
XCTAssertFalse(sut.contains("wtf"))
|
|
XCTAssertFalse(sut.contains("no"))
|
|
}
|
|
|
|
func testCoding() throws {
|
|
var sut = BloomFilter<String>(hashers: [.sdbm, .djb2], byteCount: 8)
|
|
let expectedSerialization = Data(#"{"data":"ABAAAAACAJA=","hashers":["djb2","sdbm"]}"#.utf8)
|
|
|
|
sut.insert("lol")
|
|
sut.insert("ok")
|
|
|
|
let encoder = JSONEncoder()
|
|
|
|
encoder.outputFormatting = .sortedKeys
|
|
|
|
let serialization = try encoder.encode(sut)
|
|
|
|
XCTAssertEqual(serialization, expectedSerialization)
|
|
|
|
let decoded = try JSONDecoder().decode(BloomFilter<String>.self, from: serialization)
|
|
|
|
XCTAssert(decoded.contains("lol"))
|
|
XCTAssert(decoded.contains("ok"))
|
|
XCTAssertFalse(decoded.contains("wtf"))
|
|
XCTAssertFalse(decoded.contains("no"))
|
|
}
|
|
}
|