Fix IsSet() function for sub-sections

Signed-off-by: Peter Broadhurst <peter.broadhurst@kaleido.io>

Author: peterbroadhurst

pkg/config/config.go

@@ -638,7 +638,7 @@ func (c *configSection) IsSet(key string) bool {
 	keysMutex.Lock()
 	defer keysMutex.Unlock()
 
-	return viper.IsSet(key)
+	return viper.IsSet(c.prefixKey(key))
 }
 
 // SetupLogging initializes logging

pkg/config/config_test.go

@@ -19,13 +19,14 @@ package config
 import (
 	"context"
 	"fmt"
-	"github.com/stretchr/testify/require"
 	"os"
 	"path"
 	"strings"
 	"testing"
 	"time"
 
+	"github.com/stretchr/testify/require"
+
 	"github.com/hyperledger/firefly-common/pkg/fftypes"
 	"github.com/hyperledger/firefly-common/pkg/i18n"
 	"github.com/sirupsen/logrus"
@@ -86,10 +87,18 @@ func TestDefaults(t *testing.T) {
 
 func TestValueSet(t *testing.T) {
 	RootConfigReset()
+
 	// keys with default values are not set
+	AddRootKey("key1")
 	assert.False(t, IsSet("key1"))
 	Set("key1", "updatedvalue")
 	assert.True(t, IsSet("key1"))
+
+	section := RootSection("child")
+	section.AddKnownKey("key1")
+	assert.False(t, section.IsSet("key1"))
+	section.Set("key1", "updatedvalue")
+	assert.True(t, section.IsSet("key1"))
 }
 
 func TestSpecificConfigFileOk(t *testing.T) {