diff --git a/main_test.go b/main_test.go
new file mode 100644
index 00000000..ac0c93d4
--- /dev/null
+++ b/main_test.go
@@ -0,0 +1,61 @@
+package main
+
+import (
+	"bytes"
+	"io"
+	"os"
+	"testing"
+)
+
+func Test_initConfig(t *testing.T) {
+	t.Parallel()
+	tests := []struct {
+		name    string
+		cfgFile string
+		wantErr bool
+	}{
+		{
+			name:    "test-ov.yaml",
+			cfgFile: "ov.yaml",
+			wantErr: false,
+		},
+		{
+			name:    "test-ov-less.yaml",
+			cfgFile: "ov-less.yaml",
+			wantErr: false,
+		},
+		{
+			name:    "no-file.yaml",
+			cfgFile: "no-file.yaml",
+			wantErr: true,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			cfgFile = tt.cfgFile
+			// Backup original stderr
+			origStderr := os.Stderr
+
+			// Create a buffer to capture stderr output
+			r, w, _ := os.Pipe()
+			os.Stderr = w
+
+			initConfig()
+			w.Close()
+			// Restore original stderr
+			os.Stderr = origStderr
+
+			// Read captured stderr output
+			var buf bytes.Buffer
+			io.Copy(&buf, r)
+			capturedStderr := buf.String()
+
+			// Now you can assert capturedStderr
+			// For example, check if it contains a specific error message
+			got := len(capturedStderr) > 0
+			if got != tt.wantErr {
+				t.Errorf("initConfig() error = %v, wantErr %v", capturedStderr, tt.wantErr)
+			}
+		})
+	}
+}
diff --git a/oviewer/keybind.go b/oviewer/keybind.go
index 8950371b..a91f1be0 100644
--- a/oviewer/keybind.go
+++ b/oviewer/keybind.go
@@ -68,7 +68,7 @@ const (
 	actionSkipLines      = "skip_lines"
 	actionTabWidth       = "tabwidth"
 	actionGoLine         = "goto"
-	actionSectionNum     = "section_num"
+	actionSectionNum     = "section_header_num"
 	actionNextSearch     = "next_search"
 	actionNextBackSearch = "next_backsearch"
 	actionNextDoc        = "next_doc"
diff --git a/oviewer/oviewer_test.go b/oviewer/oviewer_test.go
index b831d790..24720315 100644
--- a/oviewer/oviewer_test.go
+++ b/oviewer/oviewer_test.go
@@ -8,6 +8,7 @@ import (
 	"testing"
 
 	"github.com/gdamore/tcell/v2"
+	"github.com/spf13/viper"
 )
 
 const cwd = ".."
@@ -231,3 +232,55 @@ func Test_applyStyle(t *testing.T) {
 		})
 	}
 }
+
+func TestRoot_setKeyConfig(t *testing.T) {
+	tcellNewScreen = fakeScreen
+	defer func() {
+		tcellNewScreen = tcell.NewScreen
+	}()
+	tests := []struct {
+		name    string
+		cfgFile string
+		want    []string
+		wantErr bool
+	}{
+		{
+			name:    "test-ov.yaml",
+			cfgFile: filepath.Join(cwd, "ov.yaml"),
+			want:    []string{"Enter", "Down", "ctrl+N"},
+			wantErr: false,
+		},
+		{
+			name:    "test-ov-less.yaml",
+			cfgFile: filepath.Join(cwd, "ov-less.yaml"),
+			want:    []string{"e", "ctrl+e", "j", "J", "ctrl+j", "Enter", "Down"},
+			wantErr: false,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			root, err := Open(filepath.Join(testdata, "test.txt"))
+			if err != nil {
+				t.Fatalf("NewOviewer error = %v", err)
+			}
+			root.Screen = tcell.NewSimulationScreen("")
+			viper.SetConfigFile(tt.cfgFile)
+			var config Config
+			viper.AutomaticEnv() // read in environment variables that match
+			if err := viper.ReadInConfig(); err != nil {
+				t.Fatal("failed to read config file:", err)
+			}
+			viper.Unmarshal(&config)
+			root.SetConfig(config)
+			got, err := root.setKeyConfig()
+			if (err != nil) != tt.wantErr {
+				t.Errorf("Root.setKeyConfig() error = %v, wantErr %v", err, tt.wantErr)
+				return
+			}
+			action := "down"
+			if !reflect.DeepEqual(got[action], tt.want) {
+				t.Errorf("Root.setKeyConfig() = %v, want %v", got[action], tt.want)
+			}
+		})
+	}
+}