364 lines
12 KiB
Swift
364 lines
12 KiB
Swift
//
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// Bunch_O__DiceTests.swift
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// Bunch O' DiceTests
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//
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// Created by Rory Hinnen on 22/2/20.
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//
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import Testing
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@testable import Bunch_O__Dice
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// MARK: - Dice Total Calculation
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@Suite("Dice Total Calculation")
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struct DiceTotalTests {
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// One die showing each face — a clean baseline for cutoff tests.
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func oneEach() -> Dice {
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var d = Dice()
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d.one = 1; d.two = 1; d.three = 1; d.four = 1; d.five = 1; d.six = 1
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return d
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}
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@Test("No modifier counts faces at or above cutoff")
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func totalNoModifier() {
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let d = oneEach()
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#expect(d.total(cutoff: 6, modifier: .none) == 1)
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#expect(d.total(cutoff: 5, modifier: .none) == 2)
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#expect(d.total(cutoff: 4, modifier: .none) == 3)
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#expect(d.total(cutoff: 3, modifier: .none) == 4)
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#expect(d.total(cutoff: 2, modifier: .none) == 5)
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}
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@Test("Negative modifier effectively raises cutoff by 1")
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func totalNegativeModifier() {
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let d = oneEach()
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#expect(d.total(cutoff: 5, modifier: .negative) == 1) // effectively 6+
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#expect(d.total(cutoff: 4, modifier: .negative) == 2) // effectively 5+
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#expect(d.total(cutoff: 3, modifier: .negative) == 3) // effectively 4+
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#expect(d.total(cutoff: 2, modifier: .negative) == 4) // effectively 3+
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#expect(d.total(cutoff: 1, modifier: .negative) == 5) // effectively 2+
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}
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@Test("Positive modifier effectively lowers cutoff by 1")
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func totalPositiveModifier() {
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let d = oneEach()
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#expect(d.total(cutoff: 6, modifier: .positive) == 2) // effectively 5+
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#expect(d.total(cutoff: 5, modifier: .positive) == 3) // effectively 4+
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#expect(d.total(cutoff: 4, modifier: .positive) == 4) // effectively 3+
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#expect(d.total(cutoff: 3, modifier: .positive) == 5) // effectively 2+
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#expect(d.total(cutoff: 2, modifier: .positive) == 5) // already at 2+, no further shift
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}
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}
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// MARK: - Armour Save Calculation
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@Suite("Armour Save Calculation")
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struct ArmourSaveTests {
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func oneEach() -> Dice {
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var d = Dice()
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d.one = 1; d.two = 1; d.three = 1; d.four = 1; d.five = 1; d.six = 1
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return d
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}
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@Test("Counts dice that fail the save")
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func normalSaves() {
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let d = oneEach()
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#expect(d.armour(die: 6, invulnerable: false, save: 6, armourPenetration: 0) == 5) // 1-5 fail
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#expect(d.armour(die: 6, invulnerable: false, save: 5, armourPenetration: 0) == 4) // 1-4 fail
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#expect(d.armour(die: 6, invulnerable: false, save: 4, armourPenetration: 0) == 3) // 1-3 fail
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#expect(d.armour(die: 6, invulnerable: false, save: 3, armourPenetration: 0) == 2) // 1-2 fail
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#expect(d.armour(die: 6, invulnerable: false, save: 2, armourPenetration: 0) == 1) // only 1 fails
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}
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@Test("AP reduces effective save value")
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func armourPenetration() {
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let d = oneEach()
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// 3+ save with AP 1 → effective 4+: 1-3 fail
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#expect(d.armour(die: 6, invulnerable: false, save: 3, armourPenetration: 1) == 3)
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// 3+ save with AP 2 → effective 5+: 1-4 fail
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#expect(d.armour(die: 6, invulnerable: false, save: 3, armourPenetration: 2) == 4)
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}
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@Test("Invulnerable save ignores AP")
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func invulnerableSave() {
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let d = oneEach()
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// 4++ invulnerable with heavy AP should match a plain 4+ with no AP
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let withInvuln = d.armour(die: 6, invulnerable: true, save: 4, armourPenetration: 5)
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let noAP = d.armour(die: 6, invulnerable: false, save: 4, armourPenetration: 0)
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#expect(withInvuln == noAP)
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}
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}
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// MARK: - Roll Modifiers
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@Suite("Roll Modifiers")
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struct RollModifierTests {
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@Test("add() clamps at positive")
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func addModifier() {
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#expect(Dice.RollModifiers.negative.add() == .none)
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#expect(Dice.RollModifiers.none.add() == .positive)
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#expect(Dice.RollModifiers.positive.add() == .positive)
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}
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@Test("remove() clamps at negative")
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func removeModifier() {
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#expect(Dice.RollModifiers.positive.remove() == .none)
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#expect(Dice.RollModifiers.none.remove() == .negative)
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#expect(Dice.RollModifiers.negative.remove() == .negative)
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}
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}
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// MARK: - Wound Cutoff
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@Suite("Wound Cutoff")
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struct WoundCutoffTests {
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@Test("S double or more T: wound on 2+")
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func doubleStrength() {
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let roll = Roll()
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roll.strength = 10; roll.toughness = 5
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#expect(roll.woundCutoff == 2)
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roll.strength = 6; roll.toughness = 3
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#expect(roll.woundCutoff == 2)
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}
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@Test("S greater than T but less than double: wound on 3+")
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func strengthHigher() {
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let roll = Roll()
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roll.strength = 7; roll.toughness = 5
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#expect(roll.woundCutoff == 3)
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roll.strength = 4; roll.toughness = 3
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#expect(roll.woundCutoff == 3)
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}
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@Test("S equals T: wound on 4+")
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func equal() {
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let roll = Roll()
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roll.strength = 5; roll.toughness = 5
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#expect(roll.woundCutoff == 4)
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roll.strength = 3; roll.toughness = 3
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#expect(roll.woundCutoff == 4)
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}
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@Test("T greater than S but less than double: wound on 5+")
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func toughnessHigher() {
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let roll = Roll()
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roll.strength = 3; roll.toughness = 5
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#expect(roll.woundCutoff == 5)
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roll.strength = 4; roll.toughness = 5
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#expect(roll.woundCutoff == 5)
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}
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@Test("T double or more S: wound on 6+")
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func doubleToughness() {
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let roll = Roll()
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roll.strength = 2; roll.toughness = 5
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#expect(roll.woundCutoff == 6)
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roll.strength = 1; roll.toughness = 3
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#expect(roll.woundCutoff == 6)
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}
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}
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// MARK: - Reroll Logic
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@Suite("Reroll Logic")
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struct RerollTests {
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@Test("rerollBelow: no-op when no dice fall below cutoff")
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func rerollBelowNoop() {
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var d = Dice()
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d.four = 2; d.five = 3; d.six = 1
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d.rerollBelow(cutoff: 4)
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#expect(d.one == 0)
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#expect(d.two == 0)
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#expect(d.three == 0)
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#expect(d.four == 2)
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#expect(d.five == 3)
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#expect(d.six == 1)
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}
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@Test("rerollBelow: preserves total dice count")
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func rerollBelowPreservesCount() {
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var d = Dice()
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d.one = 3; d.two = 2; d.three = 1; d.four = 1; d.five = 1; d.six = 1
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d.rerollBelow(cutoff: 4)
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let total = d.one + d.two + d.three + d.four + d.five + d.six
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#expect(total == 9)
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}
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@Test("rerollBelow: cutoff 1 is a no-op (empty range)")
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func rerollBelowCutoffOne() {
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var d = Dice()
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d.one = 3; d.six = 2
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d.rerollBelow(cutoff: 1)
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#expect(d.one == 3)
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#expect(d.six == 2)
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}
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@Test("rerollBelow: dice above cutoff are untouched")
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func rerollBelowPreservesHighFaces() {
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var d = Dice()
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d.one = 2; d.two = 2; d.three = 2; d.six = 4
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d.rerollBelow(cutoff: 4)
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// The 4 sixes were not in the reroll range and should be unchanged
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#expect(d.six == 4)
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}
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@Test("applyReroll: none mode leaves hasRerolled false")
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func applyRerollNoneMode() {
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let roll = Roll()
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roll.state = .hit
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roll.hitRerollMode = .none
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roll.applyReroll()
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#expect(roll.hitHasRerolled == false)
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}
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@Test("applyReroll: sets hasRerolled flag after use")
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func applyRerollSetsFlag() {
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let roll = Roll()
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roll.state = .hit
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roll.hitRerollMode = .ones
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roll.dice.one = 3; roll.dice.six = 2
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roll.total = 5
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roll.applyReroll()
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#expect(roll.hitHasRerolled == true)
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}
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@Test("applyReroll: guard blocks second call")
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func applyRerollRespectsFlagAlreadySet() {
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let roll = Roll()
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roll.state = .hit
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roll.hitRerollMode = .all
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roll.hitHasRerolled = true // simulate already used
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roll.dice.one = 5 // known state
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roll.applyReroll() // should be blocked by guard
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#expect(roll.dice.one == 5)
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#expect(roll.dice.two == 0)
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#expect(roll.dice.three == 0)
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#expect(roll.dice.four == 0)
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#expect(roll.dice.five == 0)
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#expect(roll.dice.six == 0)
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}
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@Test("applyReroll: only sets flag for the active phase")
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func applyRerollPerPhaseIsolation() {
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let roll = Roll()
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roll.state = .wound
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roll.woundRerollMode = .ones
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roll.applyReroll()
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#expect(roll.woundHasRerolled == true)
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#expect(roll.hitHasRerolled == false)
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#expect(roll.saveHasRerolled == false)
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}
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@Test("applyReroll: failed mode preserves total dice count")
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func applyRerollFailedModeCount() {
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let roll = Roll()
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roll.state = .hit
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roll.hitCutoff = .four
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roll.hitRerollMode = .failed
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roll.dice.one = 1; roll.dice.two = 1; roll.dice.three = 1; roll.dice.six = 2
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roll.total = 5
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roll.applyReroll()
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let total = roll.dice.one + roll.dice.two + roll.dice.three +
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roll.dice.four + roll.dice.five + roll.dice.six
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#expect(total == 5)
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#expect(roll.dice.six == 2) // dice above cutoff are untouched
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}
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@Test("resetPool: clears hitHasRerolled flag")
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func resetPoolClearsFlag() {
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let roll = Roll()
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roll.total = 5
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roll.hitHasRerolled = true
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roll.resetPool()
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#expect(roll.hitHasRerolled == false)
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}
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@Test("resetPool: rolls dice equal to total count")
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func resetPoolRollsCorrectCount() {
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let roll = Roll()
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roll.total = 10
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roll.resetPool()
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let total = roll.dice.one + roll.dice.two + roll.dice.three +
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roll.dice.four + roll.dice.five + roll.dice.six
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#expect(total == 10)
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}
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}
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// MARK: - Blowup Logic
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@Suite("Blowup Logic")
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struct BlowupTests {
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@Test("blowup six: total increases by the original six count")
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func blowupSixIncreasesCount() {
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var d = Dice()
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d.one = 1; d.two = 1; d.six = 3
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let originalTotal = 5
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let originalSix = 3
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d.blowup(dice: .six)
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let newTotal = d.one + d.two + d.three + d.four + d.five + d.six
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#expect(newTotal == originalTotal + originalSix)
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}
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@Test("blowup five: total increases by the original five and six count")
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func blowupFiveIncreasesCount() {
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var d = Dice()
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d.one = 1; d.five = 2; d.six = 3
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let originalTotal = 6
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let originalFiveSix = 5
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d.blowup(dice: .five)
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let newTotal = d.one + d.two + d.three + d.four + d.five + d.six
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#expect(newTotal == originalTotal + originalFiveSix)
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}
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@Test("blowup six: no-op when no sixes in pool")
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func blowupSixNoop() {
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var d = Dice()
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d.one = 3; d.two = 2
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d.blowup(dice: .six)
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let total = d.one + d.two + d.three + d.four + d.five + d.six
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#expect(total == 5)
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}
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@Test("applyBlowup: sets blowupUsed flag")
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func applyBlowupSetsFlag() {
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let roll = Roll()
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roll.dice.six = 3
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roll.applyBlowup(face: .six)
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#expect(roll.blowupUsed == true)
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}
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@Test("applyBlowup: guard blocks second call")
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func applyBlowupGuard() {
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let roll = Roll()
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roll.dice.six = 2
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roll.blowupUsed = true // already used
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let totalBefore = roll.dice.one + roll.dice.two + roll.dice.three +
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roll.dice.four + roll.dice.five + roll.dice.six
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roll.applyBlowup(face: .six)
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let totalAfter = roll.dice.one + roll.dice.two + roll.dice.three +
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roll.dice.four + roll.dice.five + roll.dice.six
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#expect(totalAfter == totalBefore)
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}
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@Test("applyBlowup: using any face disables both")
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func blowupAnyFaceDisablesBoth() {
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let roll = Roll()
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roll.dice.six = 2; roll.dice.five = 2
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roll.applyBlowup(face: .six)
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#expect(roll.blowupUsed == true)
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// Five blowup should now be blocked
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let totalBefore = roll.dice.one + roll.dice.two + roll.dice.three +
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roll.dice.four + roll.dice.five + roll.dice.six
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roll.applyBlowup(face: .five)
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let totalAfter = roll.dice.one + roll.dice.two + roll.dice.three +
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roll.dice.four + roll.dice.five + roll.dice.six
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#expect(totalAfter == totalBefore)
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}
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}
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