blocky/cmd/serve_test.go

129 lines
3.0 KiB
Go

package cmd
import (
"net"
"net/http"
"os"
"syscall"
"time"
"github.com/0xERR0R/blocky/helpertest"
. "github.com/onsi/ginkgo/v2"
. "github.com/onsi/gomega"
)
const (
basePort = 5000
)
var _ = Describe("Serve command", func() {
var (
tmpDir *helpertest.TmpFolder
port string
)
BeforeEach(func() {
port = helpertest.GetStringPort(basePort)
tmpDir = helpertest.NewTmpFolder("config")
configPath = defaultConfigPath
})
When("Serve command is called with valid config", func() {
It("should start without error and terminate with signal", func() {
By("initialize config", func() {
cfgFile := tmpDir.CreateStringFile("config.yaml",
"upstreams:",
" groups:",
" default:",
" - 1.1.1.1",
"ports:",
" dns: "+port)
os.Setenv(configFileEnvVar, cfgFile.Path)
DeferCleanup(func() { os.Unsetenv(configFileEnvVar) })
initConfig()
})
errChan := make(chan error)
By("start server", func() {
go func() {
// it is a blocking function, call async
errChan <- startServer(newServeCommand(), []string{})
}()
})
By("check DNS port is open", func() {
Eventually(func(g Gomega) {
conn, err := net.DialTimeout("tcp", "127.0.0.1:"+port, 200*time.Millisecond)
g.Expect(err).Should(Succeed())
defer conn.Close()
}).Should(Succeed())
})
By("terminate with signal", func() {
signals <- syscall.SIGINT
// no errors
Eventually(errChan).Should(Receive(BeNil()))
})
})
})
When("Serve command is called with valid config", func() {
It("should fail if server start fails", func() {
By("start http server on port "+port, func() {
go func(p string) {
Expect(http.ListenAndServe(":"+p, nil)).Should(Succeed())
}(port)
})
By("initialize config with blocked port "+port, func() {
cfgFile := tmpDir.CreateStringFile("config.yaml",
"upstreams:",
" groups:",
" default:",
" - 1.1.1.1",
"ports:",
" dns: "+port)
os.Setenv(configFileEnvVar, cfgFile.Path)
DeferCleanup(func() { os.Unsetenv(configFileEnvVar) })
initConfig()
})
errChan := make(chan error)
By("start server", func() {
go func() {
// it is a blocking function, call async
errChan <- startServer(newServeCommand(), []string{})
}()
})
By("terminate with signal", func() {
var startError error
Eventually(errChan, "10s").Should(Receive(&startError))
Expect(startError).Should(MatchError(ContainSubstring("address already in use")))
})
})
})
When("Serve command is called without config", func() {
It("should fail to start and report error", func() {
errChan := make(chan error)
By("start server", func() {
go func() {
// it is a blocking function, call async
errChan <- startServer(newServeCommand(), []string{})
}()
})
By("server should terminate with error", func() {
var startError error
Eventually(errChan).Should(Receive(&startError))
Expect(startError).Should(MatchError(ContainSubstring("unable to load configuration")))
})
})
})
})