Added unit tests for client config

Signed-off-by: Utkarsh Bhatt <utkarsh.bhatt@canonical.com>

microceph/ceph/client_config_test.go

@@ -0,0 +1,65 @@
+package ceph
+
+import (
+	"fmt"
+	"reflect"
+	"testing"
+
+	"github.com/canonical/microceph/microceph/database"
+	"github.com/canonical/microceph/microceph/mocks"
+	"github.com/canonical/microcluster/state"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/suite"
+)
+
+type ClientConfigSuite struct {
+	BaseSuite
+	TestStateInterface *mocks.StateInterface
+}
+
+func TestClientConfig(t *testing.T) {
+	suite.Run(t, new(ClientConfigSuite))
+}
+
+func (ccs *ClientConfigSuite) SetupTest() {
+	ccs.BaseSuite.SetupTest()
+
+	ccs.TestStateInterface = mocks.NewStateInterface(ccs.T())
+	state := &state.State{}
+
+	ccs.TestStateInterface.On("ClusterState").Return(state)
+}
+
+func addGetHostConfigsExpectation(mci *mocks.ClientConfigQueryIntf, cs *state.State, hostname string) {
+	output := database.ClientConfigItems{}
+	count := 0
+	for configKey, field := range GetClientConfigSet() {
+		count++
+		output = append(output, database.ClientConfigItem{
+			ID:    count,
+			Host:  hostname,
+			Key:   configKey,
+			Value: fmt.Sprintf("%v", field),
+		})
+	}
+
+	mci.On("GetAllForHost", cs, hostname).Return(output, nil)
+}
+
+func (ccs *ClientConfigSuite) TestFetchHostConfig() {
+	hostname := "testHostname"
+
+	// Mock Client config query interface.
+	ccq := mocks.NewClientConfigQueryIntf(ccs.T())
+	addGetHostConfigsExpectation(ccq, ccs.TestStateInterface.ClusterState(), hostname)
+	database.ClientConfigQuery = ccq
+
+	configs, err := GetClientConfigForHost(ccs.TestStateInterface, hostname)
+	assert.NoError(ccs.T(), err)
+
+	// check fields
+	metaConfigs := reflect.ValueOf(configs)
+	for i := 0; i < metaConfigs.NumField(); i++ {
+		assert.Equal(ccs.T(), metaConfigs.Field(i).Interface(), metaConfigs.Type().Field(i).Name)
+	}
+}