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//===------------ MultidictionaryTests.swift - Swift Testing ----===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2021 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
import XCTest
@_spi(Testing) import SwiftDriver
class MultidictionaryTests: XCTestCase {
private func multidictionaryWith<K: Hashable, V: Hashable>(_ keysAndValues: Dictionary<K, [V]>) -> Multidictionary<K, V>{
var dict = Multidictionary<K, V>()
for (k, vals) in keysAndValues {
for v in vals {
dict.insertValue(v, forKey: k)
}
}
return dict
}
func testInit() throws {
let dict = Multidictionary<String, Int>()
XCTAssertEqual(dict.count, 0)
XCTAssertEqual(dict.keys.count, 0)
XCTAssertEqual(dict.values.count, 0)
XCTAssertEqual(dict.startIndex, dict.endIndex)
}
func testInsertion() throws {
var dict = Multidictionary<String, Int>()
dict.insertValue(1, forKey: "a")
dict.insertValue(1, forKey: "b")
dict.insertValue(2, forKey: "b")
dict.insertValue(1, forKey: "c")
dict.insertValue(2, forKey: "c")
dict.insertValue(3, forKey: "c")
dict.insertValue(4, forKey: "c")
XCTAssertEqual(dict.count, 3)
XCTAssertEqual(dict["a"], [1])
XCTAssertEqual(dict["b"], [1, 2])
XCTAssertEqual(dict["c"], [1, 2, 3, 4])
XCTAssertEqual(dict.keysContainingValue(1), ["a", "b", "c"])
XCTAssertEqual(dict.keysContainingValue(2), ["b", "c"])
XCTAssertEqual(dict.keysContainingValue(3), ["c"])
XCTAssertEqual(dict.keysContainingValue(4), ["c"])
}
func testInsertion_existingPair() {
var dict = multidictionaryWith([
"a": [1],
"b": [1, 2],
"c": [1, 2, 3, 4],
])
// Inserting an existing k:v pair a second time should do nothing.
XCTAssertFalse(dict.insertValue(1, forKey: "a"))
XCTAssertEqual(dict.count, 3)
XCTAssertEqual(dict["a"], [1])
XCTAssertEqual(dict["b"], [1, 2])
XCTAssertEqual(dict["c"], [1, 2, 3, 4])
XCTAssertEqual(dict.keysContainingValue(1), ["a", "b", "c"])
XCTAssertEqual(dict.keysContainingValue(2), ["b", "c"])
XCTAssertEqual(dict.keysContainingValue(3), ["c"])
XCTAssertEqual(dict.keysContainingValue(4), ["c"])
}
func testRemoveValue() throws {
var dict = multidictionaryWith([
"a": [1],
"b": [1, 2],
"c": [1, 2, 3, 4],
])
XCTAssertNotNil(dict.removeValue(2, forKey: "c"))
XCTAssertEqual(dict.count, 3)
XCTAssertEqual(dict["a"], [1])
XCTAssertEqual(dict["b"], [1, 2])
XCTAssertEqual(dict["c"], [1, 3, 4])
XCTAssertEqual(dict.keysContainingValue(1), ["a", "b", "c"])
XCTAssertEqual(dict.keysContainingValue(2), ["b"])
XCTAssertEqual(dict.keysContainingValue(3), ["c"])
XCTAssertEqual(dict.keysContainingValue(4), ["c"])
}
func testRemoveValue_nonExistentValue() throws {
var dict = multidictionaryWith([
"a": [1],
"b": [1, 2],
"c": [1, 2, 3, 4],
])
XCTAssertNil(dict.removeValue(5, forKey: "c"))
XCTAssertEqual(dict.count, 3)
XCTAssertEqual(dict["a"], [1])
XCTAssertEqual(dict["b"], [1, 2])
XCTAssertEqual(dict["c"], [1, 2, 3, 4])
XCTAssertEqual(dict.keysContainingValue(1), ["a", "b", "c"])
XCTAssertEqual(dict.keysContainingValue(2), ["b", "c"])
XCTAssertEqual(dict.keysContainingValue(3), ["c"])
XCTAssertEqual(dict.keysContainingValue(4), ["c"])
}
func testRemoveValue_nonExistentKey() throws {
var dict = multidictionaryWith([
"a": [1],
"b": [1, 2],
"c": [1, 2, 3, 4],
])
XCTAssertNil(dict.removeValue(1, forKey: "d"))
XCTAssertEqual(dict.count, 3)
XCTAssertEqual(dict["a"], [1])
XCTAssertEqual(dict["b"], [1, 2])
XCTAssertEqual(dict["c"], [1, 2, 3, 4])
XCTAssertEqual(dict.keysContainingValue(1), ["a", "b", "c"])
XCTAssertEqual(dict.keysContainingValue(2), ["b", "c"])
XCTAssertEqual(dict.keysContainingValue(3), ["c"])
XCTAssertEqual(dict.keysContainingValue(4), ["c"])
}
func testRemoveOccurencesOf() throws {
var dict = multidictionaryWith([
"a": [1],
"b": [1, 2],
"c": [1, 2, 3, 4],
])
dict.removeOccurrences(of: 1)
XCTAssertEqual(dict.count, 3)
XCTAssertEqual(dict["a"], [])
XCTAssertEqual(dict["b"], [2])
XCTAssertEqual(dict["c"], [2, 3, 4])
XCTAssertEqual(dict.keysContainingValue(1), [])
XCTAssertEqual(dict.keysContainingValue(2), ["b", "c"])
XCTAssertEqual(dict.keysContainingValue(3), ["c"])
XCTAssertEqual(dict.keysContainingValue(4), ["c"])
}
func testRemoveOccurencesOf_nonExistentValue() throws {
var dict = multidictionaryWith([
"a": [1],
"b": [1, 2],
"c": [1, 2, 3, 4],
])
dict.removeOccurrences(of: 5)
XCTAssertEqual(dict.count, 3)
XCTAssertEqual(dict["a"], [1])
XCTAssertEqual(dict["b"], [1, 2])
XCTAssertEqual(dict["c"], [1, 2, 3, 4])
XCTAssertEqual(dict.keysContainingValue(1), ["a", "b", "c"])
XCTAssertEqual(dict.keysContainingValue(2), ["b", "c"])
XCTAssertEqual(dict.keysContainingValue(3), ["c"])
XCTAssertEqual(dict.keysContainingValue(4), ["c"])
}
}
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