Add unit test case

Adding unit test for config package

Change-Id: I6897ac91f3ad55d2e48a0ab9255b224782fef5a5
Signed-off-by: Ritu Sood <ritu.sood@intel.com>

diff --git a/internal/pkg/config/config_test.go b/internal/pkg/config/config_test.go
new file mode 100644 (file)
index 0000000..32b1cc9
--- /dev/null
+++ b/internal/pkg/config/config_test.go
@@ -0,0 +1,163 @@
+package config
+
+import (
+       "fmt"
+       "io/ioutil"
+       "os"
+       "testing"
+
+       "github.com/urfave/cli"
+
+       . "github.com/onsi/ginkgo"
+       . "github.com/onsi/gomega"
+)
+
+func TestConfig(t *testing.T) {
+       RegisterFailHandler(Fail)
+       RunSpecs(t, "Config Test Suite")
+}
+
+var _ = AfterSuite(func() {
+})
+
+var _ = Describe("Test Config", func() {
+       var app *cli.App
+       var cfgFile *os.File
+       var logFile *os.File
+       var kubecfgFile *os.File
+
+       BeforeEach(func() {
+               app = cli.NewApp()
+               app.Name = "test"
+               app.Flags = Flags
+
+               var err error
+               cfgFile, err = ioutil.TempFile("", "ovn4nfvconf-")
+               Expect(err).NotTo(HaveOccurred())
+               logFile, err = ioutil.TempFile("", "ovn4nfvlog-")
+               Expect(err).NotTo(HaveOccurred())
+               kubecfgFile, err = ioutil.TempFile("", "ovn4nfvkubecfg-")
+               Expect(err).NotTo(HaveOccurred())
+       })
+
+       AfterEach(func() {
+               os.Remove(cfgFile.Name())
+               os.Remove(logFile.Name())
+               os.Remove(kubecfgFile.Name())
+       })
+
+       It("uses expected defaults", func() {
+               app.Action = func(ctx *cli.Context) error {
+                       cfgPath, err := InitConfig(ctx)
+                       Expect(err).NotTo(HaveOccurred())
+                       Expect(cfgPath).To(Equal(cfgFile.Name()))
+
+                       Expect(Default.MTU).To(Equal(1400))
+                       Expect(Logging.File).To(Equal(""))
+                       Expect(Logging.Level).To(Equal(4))
+                       Expect(CNI.ConfDir).To(Equal("/etc/cni/net.d"))
+                       Expect(CNI.Plugin).To(Equal("ovn4nfvk8s-cni"))
+                       return nil
+               }
+               err := app.Run([]string{app.Name, "-config-file=" + cfgFile.Name(), "-k8s-kubeconfig=" + kubecfgFile.Name()})
+               Expect(err).NotTo(HaveOccurred())
+       })
+
+       It("missing kubeconfig", func() {
+               app.Action = func(ctx *cli.Context) error {
+                       _, err := InitConfig(ctx)
+                       Expect(err).To(HaveOccurred())
+
+                       return nil
+               }
+               err := app.Run([]string{app.Name, "-config-file=" + cfgFile.Name()})
+               Expect(err).NotTo(HaveOccurred())
+       })
+
+       It("tests Config missing file", func() {
+               app.Action = func(ctx *cli.Context) error {
+                       _, err := InitConfig(ctx)
+                       Expect(err).To(MatchError("failed to open config file NoExistant: open NoExistant: no such file or directory"))
+                       return nil
+               }
+
+               err := app.Run([]string{app.Name, "-config-file=NoExistant"})
+               Expect(err).NotTo(HaveOccurred())
+       })
+
+       It("tests default config file", func() {
+               app.Action = func(ctx *cli.Context) error {
+                       cfgPath, err := InitConfig(ctx)
+                       Expect(err).NotTo(HaveOccurred())
+                       Expect(cfgPath).To(Equal(""))
+                       return nil
+               }
+               err := app.Run([]string{app.Name, "-k8s-kubeconfig=" + kubecfgFile.Name(), "-logfile=" + logFile.Name()})
+               Expect(err).NotTo(HaveOccurred())
+       })
+
+       It("overrides defaults with config file options", func() {
+               cfgData := fmt.Sprintf(`[default]
+mtu=1500
+
+[kubernetes]
+kubeconfig=%s
+
+[logging]
+loglevel=5
+logfile=%s
+
+[cni]
+conf-dir=/etc/cni/net.blah
+plugin=ovn-nfv-k8s-blah`, kubecfgFile.Name(), logFile.Name())
+               err := ioutil.WriteFile(cfgFile.Name(), []byte(cfgData), 0644)
+               Expect(err).NotTo(HaveOccurred())
+
+               app.Action = func(ctx *cli.Context) error {
+                       var cfgPath string
+                       cfgPath, err = InitConfig(ctx)
+                       Expect(err).NotTo(HaveOccurred())
+                       Expect(cfgPath).To(Equal(cfgFile.Name()))
+
+                       Expect(Default.MTU).To(Equal(1500))
+                       Expect(Logging.File).To(Equal(logFile.Name()))
+                       Expect(Logging.Level).To(Equal(5))
+                       Expect(CNI.ConfDir).To(Equal("/etc/cni/net.blah"))
+                       Expect(CNI.Plugin).To(Equal("ovn-nfv-k8s-blah"))
+                       Expect(Kubernetes.Kubeconfig).To(Equal(kubecfgFile.Name()))
+
+                       return nil
+               }
+               err = app.Run([]string{app.Name, "-config-file=" + cfgFile.Name()})
+               Expect(err).NotTo(HaveOccurred())
+       })
+
+       It("overrides defaults with command line options", func() {
+               app.Action = func(ctx *cli.Context) error {
+                       var cfgPath string
+                       cfgPath, err := InitConfig(ctx)
+                       Expect(err).NotTo(HaveOccurred())
+                       Expect(cfgPath).To(Equal(cfgFile.Name()))
+
+                       Expect(Default.MTU).To(Equal(1500))
+                       Expect(Logging.File).To(Equal(logFile.Name()))
+                       Expect(Logging.Level).To(Equal(5))
+                       Expect(CNI.ConfDir).To(Equal("/etc/cni/net.blah"))
+                       Expect(CNI.Plugin).To(Equal("ovn-nfv-k8s-blah"))
+                       Expect(Kubernetes.Kubeconfig).To(Equal(kubecfgFile.Name()))
+
+                       return nil
+               }
+               args := []string{
+                       app.Name,
+                       "-config-file=" + cfgFile.Name(),
+                       "-k8s-kubeconfig=" + kubecfgFile.Name(),
+                       "-mtu=1500",
+                       "-loglevel=5", "-logfile=" + logFile.Name(),
+                       "-cni-conf-dir=/etc/cni/net.blah",
+                       "-cni-plugin=ovn-nfv-k8s-blah"}
+
+               err := app.Run(args)
+               Expect(err).NotTo(HaveOccurred())
+       })
+})