Add tests

Author: Karthik99999

test/ev-optimizer.test.js

@@ -0,0 +1,73 @@
+const assert = require('assert').strict;
+
+try {
+  global.BattlePokedex = require('../play.pokemonshowdown.com/data/pokedex.js').BattlePokedex;
+} catch (err) {}
+require('../play.pokemonshowdown.com/js/battle-dex-data.js');
+require('../play.pokemonshowdown.com/js/battle-dex.js');
+require('../play.pokemonshowdown.com/js/battle-tooltips.js');
+
+describe('EV Optimizer', () => {
+  (global.BattlePokedex ? it : it.skip)('should find the spreads that saves the most EVs', () => {
+    const trapinch = BattleStatOptimizer({
+      species: "Trapinch",
+      nature: "Lax",
+      evs: {hp: 204, atk: 252, def: 52, spa: 0, spd: 0, spe: 0},
+      level: 100
+    }, 'gen9');
+    assert.deepStrictEqual(trapinch, {
+      evs: {hp: 204, atk: 144, def: 104, spa: 0, spd: 0, spe: 0},
+      plus: 'atk',
+      minus: 'spd',
+      savedEVs: 56,
+    });
+
+    const groudon = BattleStatOptimizer({
+      species: "Groudon-Primal",
+      nature: "Serious",
+      evs: {hp: 0, atk: 252, def: 0, spa: 156, spd: 0, spe: 100},
+      level: 100
+    }, 'gen7');
+    assert.deepStrictEqual(groudon, {
+      evs: {hp: 0, atk: 88, def: 0, spa: 156, spd: 96, spe: 100},
+      plus: 'atk',
+      minus: 'spd',
+      savedEVs: 68,
+    });
+
+    const thundurus = BattleStatOptimizer({
+      species: "Thundurus",
+      nature: "Timid",
+      evs: {hp: 252, atk: 0, def: 0, spa: 232, spd: 0, spe: 24},
+      ivs: {hp: 31, atk: 2, def: 31, spa: 30, spd: 31, spe: 30},
+      level: 50
+    }, 'gen5');
+    assert.deepStrictEqual(thundurus, {
+      evs: {hp: 252, atk: 0, def: 0, spa: 112, spd: 0, spe: 128},
+      plus: 'spa',
+      minus: 'atk',
+      savedEVs: 16,
+    });
+
+    const amoonguss = BattleStatOptimizer({
+      species: "Amoonguss",
+      nature: "Bold",
+      evs: {hp: 252, atk: 0, def: 100, spa: 0, spd: 156, spe: 0},
+      level: 50
+    }, 'gen9');
+    assert.deepStrictEqual(amoonguss, {
+      evs: {hp: 252, atk: 0, def: 180, spa: 0, spd: 76, spe: 0},
+      plus: 'spd',
+      minus: 'atk',
+      savedEVs: 0,
+    });
+
+    const mienfoo = BattleStatOptimizer({
+      species: "Mienfoo",
+      nature: "Jolly",
+      evs: {hp: 0, atk: 236, def: 116, spa: 0, spd: 0, spe: 156},
+      level: 5
+    }, 'gen9');
+    assert.equal(mienfoo, null);
+  });
+});