Host API stubs (#12)

packages/graph-node/src/index.test.ts

@@ -2,16 +2,14 @@
 // Copyright 2021 Vulcanize, Inc.
 //
 
-import { expect } from 'chai';
 import path from 'path';
-import 'mocha';
 
-import { getExports } from './index';
+import { instantiate } from './index';
 
 const WASM_FILE_PATH = '../build/debug.wasm';
 
 it('should execute exported function', async () => {
   const filePath = path.resolve(__dirname, WASM_FILE_PATH);
-  const { exports } = await getExports(filePath);
-  expect(exports.add(1, 2)).to.equal(3);
+  const { exports } = await instantiate(filePath);
+  exports.callGraphAPI();
 });

packages/graph-node/src/index.ts

@@ -5,9 +5,76 @@
 import fs from 'fs/promises';
 import loader from '@assemblyscript/loader';
 
-const imports = { /* imports go here */ };
+const imports = {
+  index: {
+    'store.get': () => {
+      console.log('store.get');
+    },
+    'store.set': () => {
+      console.log('store.set');
+    },
 
-export const getExports = async (filePath: string): Promise<loader.ResultObject & { exports: any }> => {
+    'typeConversion.stringToH160': () => {
+      console.log('typeConversion.stringToH160');
+    },
+    'typeConversion.bytesToHex': () => {
+      console.log('typeConversion.bytesToHex');
+    },
+    'typeConversion.bytesToString': () => {
+      console.log('typeConversion.bytesToString');
+    },
+    'typeConversion.bigIntToString': () => {
+      console.log('typeConversion.bigIntToString');
+    },
+
+    'bigDecimal.fromString': () => {
+      console.log('bigDecimal.fromString');
+    },
+    'bigDecimal.times': () => {
+      console.log('bigDecimal.times');
+    },
+    'bigDecimal.dividedBy': () => {
+      console.log('bigDecimal.dividedBy');
+    },
+    'bigDecimal.plus': () => {
+      console.log('bigDecimal.plus');
+    },
+    'bigDecimal.minus': () => {
+      console.log('bigDecimal.minus');
+    },
+
+    'bigInt.plus': () => {
+      console.log('bigInt.plus');
+    },
+    'bigInt.minus': () => {
+      console.log('bigInt.minus');
+    },
+    'bigInt.times': () => {
+      console.log('bigInt.times');
+    },
+    'bigInt.dividedBy': () => {
+      console.log('bigInt.dividedBy');
+    },
+    'bigInt.mod': () => {
+      console.log('bigInt.mod');
+    },
+
+    'log.log': () => {
+      console.log('log.log');
+    },
+
+    'dataSource.create': () => {
+      console.log('dataSource.create');
+    }
+  },
+  ethereum: {
+    'ethereum.call': () => {
+      console.log('ethereum.call');
+    }
+  }
+};
+
+export const instantiate = async (filePath: string): Promise<loader.ResultObject & { exports: any }> => {
   const buffer = await fs.readFile(filePath);
   return loader.instantiate(buffer, imports);
 };