add test for dev flag

internal/cli/server/server_test.go

@@ -0,0 +1,41 @@
+package server
+
+import (
+ "testing"
+ "time"
+
+ "github.com/stretchr/testify/assert"
+)
+
+func TestServer_DeveloperMode(t *testing.T) {
+
+ // get the default config
+ config := DefaultConfig()
+
+ // enable developer mode
+ config.Developer.Enabled = true
+ config.Developer.Period = 2 // block time
+
+ // start the server
+ server, err1 := NewServer(config)
+ if err1 != nil {
+ t.Fatalf("failed to start server: %v", err1)
+ }
+
+ // record the initial block number
+ blockNumber := server.backend.BlockChain().CurrentBlock().Header().Number.Int64()
+
+ var i int64 = 0
+ for i = 0; i < 10; i++ {
+ // We expect the node to mine blocks every `config.Developer.Period` time period
+ time.Sleep(time.Duration(config.Developer.Period) * time.Second)
+ currBlock := server.backend.BlockChain().CurrentBlock().Header().Number.Int64()
+ expected := blockNumber + i + 1
+ if res := assert.Equal(t, currBlock, expected); res == false {
+ break
+ }
+ }
+
+ // stop the server
+ server.Stop()
+}