refactor: move BigInt math to core package, add sum(bigint[])

packages/core/package.json

@@ -14,7 +14,7 @@
     "tscNoEmit": "shx echo typescript --noEmit command not implemented yet",
     "cleanup": "shx rm -rf dist node_modules",
     "lint": "eslint --ignore-path ../../.eslintignore \"**/*.ts\"",
-    "test": "shx echo No tests in this package"
+    "test": "jest -c ./test/jest.config.js"
   },
   "devDependencies": {
     "shx": "^0.3.3"

packages/core/src/BigIntMath.ts

@@ -0,0 +1,8 @@
+export const BigIntMath = {
+  abs(x: bigint): bigint {
+    return x < 0n ? -x : x;
+  },
+  sum(arr: bigint[]): bigint {
+    return arr.reduce((result, num) => result + num, 0n);
+  }
+};

packages/core/src/index.ts

@@ -3,3 +3,4 @@ export * as Cardano from './Cardano';
 export * from './Genesis';
 export * from './Provider';
 export * from './Transaction';
+export * from './BigIntMath';

packages/core/test/.eslintrc.js

@@ -0,0 +1,7 @@
+module.exports = {
+  "extends": ["../../../test/.eslintrc.js"],
+  "parserOptions": {
+    "project": "./tsconfig.json",
+    "tsconfigRootDir": __dirname
+  }
+}

packages/core/test/BigIntMath.test.ts

@@ -0,0 +1,12 @@
+import { BigIntMath } from '@src/BigIntMath';
+
+describe('BigIntMath', () => {
+  describe('abs', () => {
+    it('positive', () => expect(BigIntMath.abs(1n)).toBe(1n));
+    it('negative', () => expect(BigIntMath.abs(-1n)).toBe(1n));
+  });
+  describe('sum', () => {
+    it('empty', () => expect(BigIntMath.sum([])).toBe(0n));
+    it('non-empty', () => expect(BigIntMath.sum([-1n, 5n])).toBe(4n));
+  });
+});

packages/core/test/jest.config.js

@@ -0,0 +1,11 @@
+const { pathsToModuleNameMapper } = require('ts-jest/utils')
+const { compilerOptions } = require('./tsconfig')
+
+module.exports = {
+  moduleNameMapper: pathsToModuleNameMapper(compilerOptions.paths),
+  preset: 'ts-jest',
+  transform: {
+    "^.+\\.test.ts?$": "ts-jest"
+  },
+  testTimeout: 120000
+}

packages/core/test/tsconfig.json

@@ -0,0 +1,10 @@
+{
+  "extends": "../../../tsconfig.json",
+  "compilerOptions": {
+    "baseUrl": ".",
+    "paths": {
+      "@src/*": ["../src/*"]
+    }
+  },
+  "references": [{ "path": "../src" }]
+}

packages/golden-test-generator/src/AddressBalance/applyValue.ts

@@ -1,12 +1,14 @@
+/* eslint-disable prettier/prettier */
 import { Schema } from '@cardano-ogmios/client';
-import { Math as BigIntMath } from '../lib/BigInt';
+import { BigIntMath } from '@cardano-sdk/core';
 
 const throwIfNegative = (value: bigint | number): void => {
   if (value < 0) {
     throw new Error('The value provided cannot be applied as it will result in a negative balance');
   }
 };
 
+// eslint-disable-next-line sonarjs/cognitive-complexity
 export const applyValue = (balance: Schema.Value, value: Schema.Value, spending = false): Schema.Value => {
   const coins = balance.coins + (spending ? -Math.abs(value.coins) : value.coins);
   throwIfNegative(coins);
@@ -20,9 +22,7 @@ export const applyValue = (balance: Schema.Value, value: Schema.Value, spending
       balanceToApply.assets[assetId] =
         balance.assets[assetId] !== undefined
           ? balance.assets[assetId] + (spending ? -BigIntMath.abs(qty) : qty)
-          : spending
-          ? -BigIntMath.abs(qty)
-          : qty;
+          : (spending ? -BigIntMath.abs(qty) : qty);
       throwIfNegative(balanceToApply.assets[assetId]);
     }
   }