90 lines
2.7 KiB
Nim
90 lines
2.7 KiB
Nim
import std/json
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import pkg/asynctest
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import pkg/json_rpc/rpcclient
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import ethers/provider
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import ethers/providers/jsonrpc/subscriptions
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suite "JsonRpcSubscriptions":
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test "can be instantiated with an http client":
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let client = newRpcHttpClient()
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let subscriptions = JsonRpcSubscriptions.new(client)
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check not isNil subscriptions
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test "can be instantiated with a websocket client":
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let client = newRpcWebSocketClient()
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let subscriptions = JsonRpcSubscriptions.new(client)
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check not isNil subscriptions
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template subscriptionTests(subscriptions, client) =
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test "subscribes to new blocks":
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var latestBlock: Block
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proc callback(blck: Block) {.async.} =
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latestBlock = blck
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let subscription = await subscriptions.subscribeBlocks(callback)
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discard await client.call("evm_mine", newJArray())
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check eventually latestBlock.number.isSome
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check latestBlock.hash.isSome
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check latestBlock.timestamp > 0.u256
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await subscription.unsubscribe()
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test "stops listening to new blocks when unsubscribed":
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var count = 0
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proc callback(blck: Block) {.async.} =
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inc count
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let subscription = await subscriptions.subscribeBlocks(callback)
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discard await client.call("evm_mine", newJArray())
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check eventually count > 0
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await subscription.unsubscribe()
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count = 0
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discard await client.call("evm_mine", newJArray())
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await sleepAsync(100.millis)
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check count == 0
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test "stops listening to new blocks when provider is closed":
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var count = 0
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proc callback(blck: Block) {.async.} =
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inc count
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let subscription = await subscriptions.subscribeBlocks(callback)
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discard await client.call("evm_mine", newJArray())
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check eventually count > 0
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await subscriptions.close()
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count = 0
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discard await client.call("evm_mine", newJArray())
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await sleepAsync(100.millis)
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check count == 0
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suite "Web socket subscriptions":
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var subscriptions: JsonRpcSubscriptions
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var client: RpcWebSocketClient
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setup:
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client = newRpcWebSocketClient()
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await client.connect("ws://localhost:8545")
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subscriptions = JsonRpcSubscriptions.new(client)
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teardown:
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await subscriptions.close()
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await client.close()
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subscriptionTests(subscriptions, client)
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suite "HTTP polling subscriptions":
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var subscriptions: JsonRpcSubscriptions
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var client: RpcHttpClient
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setup:
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client = newRpcHttpClient()
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await client.connect("http://localhost:8545")
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subscriptions = JsonRpcSubscriptions.new(client,
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pollingInterval = 100.millis)
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teardown:
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await subscriptions.close()
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await client.close()
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subscriptionTests(subscriptions, client)
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