Add Friendbot support

CHANGELOG.md

@@ -5,6 +5,8 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [Unreleased]
+### Added
+- Friendbot support
 
 ## [0.6.0] - 2018-11-27
 ### Added

lib/stellar/client.rb

@@ -11,6 +11,7 @@ class Client
     HORIZON_LOCALHOST_URL = 'http://127.0.0.1:8000'
     HORIZON_MAINNET_URL = 'https://horizon.stellar.org'
     HORIZON_TESTNET_URL = 'https://horizon-testnet.stellar.org'
+    FRIENDBOT_URL = 'https://friendbot.stellar.org'.freeze
 
     def self.default(options={})
       new options.merge(
@@ -76,7 +77,9 @@ def account_merge(options={})
     end
 
     def friendbot(account)
-      raise NotImplementedError
+      uri = URI.parse(FRIENDBOT_URL)
+      uri.query = "addr=#{account.address}"
+      Faraday.post(uri.to_s)
     end
 
     Contract ({

spec/lib/stellar/client_spec.rb

@@ -33,6 +33,27 @@
     end
   end
 
+  describe "#friendbot" do
+    let(:client) { Stellar::Client.default_testnet }
+    let(:account) { Stellar::Account.random }
+
+    it("requests for XLM from a friendbot", {
+      vcr: {record: :once, match_requests_on: [:method]}
+    }) do
+      response = client.friendbot(account)
+
+      expect(response).to be_success
+
+      destination_info = client.account_info(account)
+      balances = destination_info.balances
+      expect(balances).to_not be_empty
+      native_asset_balance_info = balances.find do |b|
+        b["asset_type"] == "native"
+      end
+      expect(native_asset_balance_info["balance"].to_f).to be > 0
+    end
+  end
+
   describe "#create_account" do
     let(:source) { Stellar::Account.from_seed(CONFIG[:source_seed]) }
     let(:destination) { Stellar::Account.random }