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31 lines
910 B
31 lines
910 B
const JsonRpcEngine = require('json-rpc-engine')
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const scaffoldMiddleware = require('eth-json-rpc-middleware/scaffold')
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const TestBlockchain = require('eth-block-tracker/test/util/testBlockMiddleware')
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module.exports = {
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createEngineForTestData,
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providerFromEngine,
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scaffoldMiddleware,
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createTestProviderTools,
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}
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function createEngineForTestData () {
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return new JsonRpcEngine()
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}
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function providerFromEngine (engine) {
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const provider = { sendAsync: engine.handle.bind(engine) }
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return provider
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}
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function createTestProviderTools (opts = {}) {
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const engine = createEngineForTestData()
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const testBlockchain = new TestBlockchain()
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// handle provided hooks
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engine.push(scaffoldMiddleware(opts.scaffold || {}))
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// handle block tracker methods
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engine.push(testBlockchain.createMiddleware())
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const provider = providerFromEngine(engine)
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return { provider, engine, testBlockchain }
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}
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