sendou.ink/app/features/comp-analyzer/core/damage-combinations.test.ts
2026-02-20 18:10:00 +02:00

435 lines
12 KiB
TypeScript

import { describe, expect, test } from "vitest";
import {
COMBO_DAMAGE_THRESHOLD,
MAX_COMBOS_DISPLAYED,
MAX_DAMAGE_TYPES_PER_COMBO,
MAX_REPEATS_PER_DAMAGE_TYPE,
} from "../comp-analyzer-constants";
import {
calculateDamageCombos,
calculateInkTimeToKill,
extractDamageSources,
} from "./damage-combinations";
const SPLATTERSHOT_ID = 40;
const SPLAT_ROLLER_ID = 1010;
const SPLAT_CHARGER_ID = 2010;
const AEROSPRAY_MG_ID = 30;
const SPLATTERSHOT_JR_ID = 10;
const EXPLOSHER_ID = 3040;
describe("extractDamageSources", () => {
test("extracts main weapon damages", () => {
const sources = extractDamageSources([SPLATTERSHOT_ID]);
expect(sources.length).toBe(1);
expect(sources[0].weaponId).toBe(SPLATTERSHOT_ID);
expect(sources[0].weaponSlot).toBe(0);
const mainDamages = sources[0].damages.filter(
(d) => d.weaponType === "MAIN",
);
expect(mainDamages.length).toBeGreaterThan(0);
});
test("extracts sub weapon damages", () => {
const sources = extractDamageSources([SPLATTERSHOT_ID]);
const subDamages = sources[0].damages.filter((d) => d.weaponType === "SUB");
expect(subDamages.length).toBeGreaterThan(0);
});
test("extracts special weapon damages when applicable", () => {
const sources = extractDamageSources([SPLATTERSHOT_ID]);
const specialDamages = sources[0].damages.filter(
(d) => d.weaponType === "SPECIAL",
);
expect(specialDamages.length).toBeGreaterThan(0);
});
test("assigns correct weapon slots for multiple weapons", () => {
const sources = extractDamageSources([
SPLATTERSHOT_ID,
SPLAT_ROLLER_ID,
SPLAT_CHARGER_ID,
]);
expect(sources.length).toBe(3);
expect(sources[0].weaponSlot).toBe(0);
expect(sources[1].weaponSlot).toBe(1);
expect(sources[2].weaponSlot).toBe(2);
});
});
describe("calculateDamageCombos - basic combination generation", () => {
test("generates combos involving 2+ weapons", () => {
const combos = calculateDamageCombos([SPLATTERSHOT_ID, SPLAT_ROLLER_ID]);
expect(combos.length).toBeGreaterThan(0);
for (const combo of combos) {
const uniqueSlots = new Set(combo.segments.map((s) => s.weaponSlot));
expect(uniqueSlots.size).toBeGreaterThanOrEqual(2);
}
});
test("calculates correct total damage", () => {
const combos = calculateDamageCombos([SPLATTERSHOT_ID, SPLAT_ROLLER_ID]);
for (const combo of combos) {
const calculatedTotal = combo.segments.reduce(
(sum, segment) => sum + segment.damageValue * segment.count,
0,
);
expect(combo.totalDamage).toBeCloseTo(calculatedTotal, 1);
}
});
test("calculates correct hit count", () => {
const combos = calculateDamageCombos([SPLATTERSHOT_ID, SPLAT_ROLLER_ID]);
for (const combo of combos) {
const calculatedHitCount = combo.segments.reduce(
(sum, segment) => sum + segment.count,
0,
);
expect(combo.hitCount).toBe(calculatedHitCount);
}
});
});
describe("calculateDamageCombos - constraint enforcement", () => {
test("respects max damage types per combo constraint", () => {
const combos = calculateDamageCombos([
SPLATTERSHOT_ID,
SPLAT_ROLLER_ID,
SPLAT_CHARGER_ID,
AEROSPRAY_MG_ID,
]);
for (const combo of combos) {
const uniqueTypes = new Set(combo.segments.map((s) => s.damageType));
expect(uniqueTypes.size).toBeLessThanOrEqual(MAX_DAMAGE_TYPES_PER_COMBO);
}
});
test("respects max repeats per damage type constraint", () => {
const combos = calculateDamageCombos([
SPLATTERSHOT_ID,
SPLAT_ROLLER_ID,
SPLAT_CHARGER_ID,
AEROSPRAY_MG_ID,
]);
for (const combo of combos) {
const typeToCount = new Map<string, number>();
for (const segment of combo.segments) {
const current = typeToCount.get(segment.damageType) ?? 0;
typeToCount.set(segment.damageType, current + segment.count);
}
for (const [type, count] of typeToCount) {
expect(
count,
`Type ${type} has ${count} uses, max is ${MAX_REPEATS_PER_DAMAGE_TYPE}`,
).toBeLessThanOrEqual(MAX_REPEATS_PER_DAMAGE_TYPE);
}
}
});
test("requires 2+ weapon slots in each combo", () => {
const combos = calculateDamageCombos([
SPLATTERSHOT_ID,
SPLAT_ROLLER_ID,
SPLAT_CHARGER_ID,
]);
for (const combo of combos) {
const uniqueSlots = new Set(combo.segments.map((s) => s.weaponSlot));
expect(uniqueSlots.size).toBeGreaterThanOrEqual(2);
}
});
});
describe("calculateDamageCombos - threshold filtering", () => {
test("excludes combos below damage threshold", () => {
const combos = calculateDamageCombos([SPLATTERSHOT_ID, SPLAT_ROLLER_ID]);
for (const combo of combos) {
expect(combo.totalDamage).toBeGreaterThanOrEqual(COMBO_DAMAGE_THRESHOLD);
}
});
test("includes combos at or above damage threshold", () => {
const combos = calculateDamageCombos([SPLATTERSHOT_ID, SPLAT_ROLLER_ID]);
const hasValidCombos = combos.some(
(c) => c.totalDamage >= COMBO_DAMAGE_THRESHOLD,
);
expect(hasValidCombos).toBe(true);
});
});
describe("calculateDamageCombos - one-shot exclusion", () => {
test("excludes all combos containing a 100+ damage hit", () => {
const combos = calculateDamageCombos([SPLAT_CHARGER_ID, SPLATTERSHOT_ID]);
for (const combo of combos) {
const hasOneShot = combo.segments.some((s) => s.damageValue >= 100);
expect(hasOneShot).toBe(false);
}
});
});
describe("calculateDamageCombos - sorting", () => {
test("sorts results by totalDamage closest to 100 (lethal threshold)", () => {
const combos = calculateDamageCombos([
SPLATTERSHOT_ID,
SPLAT_ROLLER_ID,
SPLAT_CHARGER_ID,
]);
if (combos.length < 2) {
return;
}
for (let i = 0; i < combos.length - 1; i++) {
const currentDistTo100 = Math.abs(combos[i].totalDamage - 100);
const nextDistTo100 = Math.abs(combos[i + 1].totalDamage - 100);
expect(currentDistTo100).toBeLessThanOrEqual(nextDistTo100);
}
});
});
describe("calculateDamageCombos - result cap", () => {
test("returns at most MAX_COMBOS_DISPLAYED results", () => {
const combos = calculateDamageCombos([
SPLATTERSHOT_ID,
SPLAT_ROLLER_ID,
SPLAT_CHARGER_ID,
AEROSPRAY_MG_ID,
]);
expect(combos.length).toBeLessThanOrEqual(MAX_COMBOS_DISPLAYED);
});
});
describe("calculateDamageCombos - edge cases", () => {
test("returns empty array for empty weapon selection", () => {
const combos = calculateDamageCombos([]);
expect(combos).toEqual([]);
});
test("returns empty array for single weapon (cannot make cross-weapon combos)", () => {
const combos = calculateDamageCombos([SPLATTERSHOT_ID]);
expect(combos).toEqual([]);
});
test("same sub weapon on multiple weapons creates valid combos", () => {
const combos = calculateDamageCombos([SPLATTERSHOT_ID, SPLATTERSHOT_JR_ID]);
expect(combos.length).toBeGreaterThanOrEqual(0);
for (const combo of combos) {
const uniqueSlots = new Set(combo.segments.map((s) => s.weaponSlot));
expect(uniqueSlots.size).toBeGreaterThanOrEqual(2);
}
});
test("all segments have valid weapon slot assignments", () => {
const combos = calculateDamageCombos([SPLATTERSHOT_ID, SPLAT_ROLLER_ID]);
for (const combo of combos) {
for (const segment of combo.segments) {
expect(segment.weaponSlot).toBeGreaterThanOrEqual(0);
expect(segment.weaponSlot).toBeLessThan(4);
}
}
});
test("all segments have count of 1 or 2", () => {
const combos = calculateDamageCombos([
SPLATTERSHOT_ID,
SPLAT_ROLLER_ID,
SPLAT_CHARGER_ID,
]);
for (const combo of combos) {
for (const segment of combo.segments) {
expect(segment.count).toBeGreaterThanOrEqual(1);
expect(segment.count).toBeLessThanOrEqual(2);
}
}
});
});
describe("calculateInkTimeToKill", () => {
test("returns null for combos that are already lethal (>= 100 damage)", () => {
const result = calculateInkTimeToKill(100, 0);
expect(result).toBeNull();
});
test("returns null for combos above 100 damage", () => {
const result = calculateInkTimeToKill(150, 0);
expect(result).toBeNull();
});
test("calculates short ink time for 99 damage combo with 0 RES", () => {
const result = calculateInkTimeToKill(99, 0);
expect(result).not.toBeNull();
expect(result).toBeGreaterThan(0);
expect(result).toBeLessThan(30);
});
test("calculates longer ink time for 80 damage combo with 0 RES", () => {
const result = calculateInkTimeToKill(80, 0);
expect(result).not.toBeNull();
expect(result).toBeGreaterThan(60);
});
test("returns null when remaining damage exceeds ink damage limit with high RES", () => {
const result = calculateInkTimeToKill(60, 57);
expect(result).toBeNull();
});
test("higher RES increases ink time", () => {
const resultNoRes = calculateInkTimeToKill(90, 0);
const resultMaxRes = calculateInkTimeToKill(90, 57);
expect(resultNoRes).not.toBeNull();
expect(resultMaxRes).not.toBeNull();
expect(resultMaxRes!).toBeGreaterThan(resultNoRes!);
});
test("handles boundary case at 0 AP", () => {
const result = calculateInkTimeToKill(80, 0);
expect(result).not.toBeNull();
expect(result).toBeGreaterThan(0);
});
test("handles boundary case at 57 AP", () => {
const result = calculateInkTimeToKill(90, 57);
expect(result).not.toBeNull();
expect(result).toBeGreaterThan(0);
});
});
describe("calculateDamageCombos - excessive combo filtering", () => {
test("filters out excessive combos (200+ damage where removing any hit still kills)", () => {
const combos = calculateDamageCombos(
[SPLATTERSHOT_ID, SPLAT_ROLLER_ID, SPLAT_CHARGER_ID, AEROSPRAY_MG_ID],
[],
0,
1000,
);
const hasExcessiveCombo = combos.some((combo) => {
const flatDamages = combo.segments.flatMap((s) =>
Array(s.count).fill(s.damageValue),
);
for (const damage of flatDamages) {
const reducedDamage = combo.totalDamage - damage;
if (reducedDamage >= 100) {
return true;
}
}
return false;
});
expect(hasExcessiveCombo).toBe(false);
});
test("allows combos where removing any hit drops below lethal threshold", () => {
const combos = calculateDamageCombos(
[SPLATTERSHOT_ID, SPLAT_ROLLER_ID],
[],
0,
1000,
);
for (const combo of combos) {
const flatDamages = combo.segments.flatMap((s) =>
Array(s.count).fill(s.damageValue),
);
const allHitsNecessary = flatDamages.every(
(damage) => combo.totalDamage - damage < 100,
);
expect(allHitsNecessary).toBe(true);
}
});
});
const TRI_SLOSHER_ID = 3010;
const INKBRUSH_ID = 1100;
const GOLD_DYNAMO_ROLLER_ID = 1021;
const RAPID_BLASTER_PRO_WNT_R_ID = 252;
describe("calculateDamageCombos - deduplication", () => {
test("no duplicate combos with bug report weapons", () => {
const combos = calculateDamageCombos(
[
TRI_SLOSHER_ID,
INKBRUSH_ID,
GOLD_DYNAMO_ROLLER_ID,
RAPID_BLASTER_PRO_WNT_R_ID,
],
[],
0,
1000,
);
const canonicalKeys = combos.map((combo) => {
const grouped = new Map<string, number>();
for (const segment of combo.segments) {
const key = `${segment.damageType}:${segment.damageValue}`;
grouped.set(key, (grouped.get(key) ?? 0) + segment.count);
}
return [...grouped.entries()]
.sort(([a], [b]) => a.localeCompare(b))
.map(([key, count]) => `${key}:${count}`)
.join("|");
});
const uniqueKeys = new Set(canonicalKeys);
expect(uniqueKeys.size).toBe(canonicalKeys.length);
});
});
describe("virtual damage combos", () => {
test("Explosher has COMBO damage type combining DIRECT and DISTANCE", () => {
const sources = extractDamageSources([EXPLOSHER_ID]);
const damages = sources[0].damages;
const comboDamage = damages.find((d) => d.type === "COMBO");
expect(comboDamage).toBeDefined();
expect(comboDamage?.weaponType).toBe("MAIN");
const directDamage = damages.find((d) => d.type === "DIRECT");
const distanceDamage = damages.find((d) => d.type === "DISTANCE");
expect(directDamage).toBeDefined();
expect(distanceDamage).toBeDefined();
const expectedComboValue =
(directDamage?.value ?? 0) + (distanceDamage?.value ?? 0);
expect(comboDamage?.value).toBeCloseTo(expectedComboValue, 1);
});
test("COMBO damage appears in damage combos", () => {
const combos = calculateDamageCombos([EXPLOSHER_ID, SPLATTERSHOT_ID]);
const comboWithComboType = combos.find((c) =>
c.segments.some((s) => s.damageType === "COMBO"),
);
expect(comboWithComboType).toBeDefined();
});
});