Adding unit tests for server/secrets.go

Signed-off-by: Liu Chang <liuchang@qiniu.com>

server/fixtures/secret/testDataA

@@ -0,0 +1 @@
+secretDataA

server/fixtures/secret/testDataB

@@ -0,0 +1 @@
+secretDataB

server/secrets_test.go

@@ -0,0 +1,61 @@
+package server
+
+import (
+	"testing"
+)
+
+const (
+	defaultError   = "unable to get host and container dir"
+	secretDataPath = "fixtures/secret"
+	emptyPath      = "fixtures/secret/empty"
+)
+
+func TestGetMountsMap(t *testing.T) {
+	testCases := []struct {
+		Path, HostDir, CtrDir string
+		Error                 string
+	}{
+		{"", "", "", defaultError},
+		{"/tmp:/home/crio", "/tmp", "/home/crio", ""},
+		{"crio/logs:crio/logs", "crio/logs", "crio/logs", ""},
+		{"/tmp", "", "", defaultError},
+	}
+	for _, c := range testCases {
+		hostDir, ctrDir, err := getMountsMap(c.Path)
+		if hostDir != c.HostDir || ctrDir != c.CtrDir || (err != nil && err.Error() != c.Error) {
+			t.Errorf("expect: (%v, %v, %v) \n but got: (%v, %v, %v) \n",
+				c.HostDir, c.CtrDir, c.Error, hostDir, ctrDir, err)
+		}
+	}
+}
+
+func TestGetHostSecretData(t *testing.T) {
+	testCases := []struct {
+		Path string
+		Want []SecretData
+	}{
+		{
+			"emptyPath",
+			[]SecretData{},
+		},
+		{
+			secretDataPath,
+			[]SecretData{
+				{"testDataA", []byte("secretDataA")},
+				{"testDataB", []byte("secretDataB")},
+			},
+		},
+	}
+	for _, c := range testCases {
+		if secretData, err := getHostSecretData(c.Path); err != nil {
+			t.Error(err)
+		} else {
+			for index, data := range secretData {
+				if data.Name != c.Want[index].Name || string(data.Data) != string(c.Want[index].Data) {
+					t.Errorf("expect: (%v, %v) \n but got: (%v, %v) \n",
+						c.Want[index].Name, string(c.Want[index].Data), data.Name, string(data.Data))
+				}
+			}
+		}
+	}
+}