Extract helper function for integration test

We are going to reuse it in two other tests that we are going to add in the next
commit.

pkg/integration/tests/filter_by_path/keep_same_commit_selected_on_exit.go

@@ -15,26 +15,10 @@ var KeepSameCommitSelectedOnExit = NewIntegrationTest(NewIntegrationTestArgs{
 		commonSetup(shell)
 	},
 	Run: func(t *TestDriver, keys config.KeybindingConfig) {
-		t.Views().Commits().
-			Focus().
-			Lines(
-				Contains(`none of the two`).IsSelected(),
-				Contains(`both files`),
-				Contains(`only otherFile`),
-				Contains(`only filterFile`),
-			).Press(keys.Universal.FilteringMenu).
-			Tap(func() {
-				t.ExpectPopup().Menu().
-					Title(Equals("Filtering")).
-					Select(Contains("Enter path to filter by")).
-					Confirm()
+		filterByFilterFile(t, keys)
 
-				t.ExpectPopup().Prompt().
-					Title(Equals("Enter path:")).
-					Type("filterF").
-					SuggestionLines(Equals("filterFile")).
-					ConfirmFirstSuggestion()
-			}).
+		t.Views().Commits().
+			IsFocused().
 			Lines(
 				Contains(`both files`).IsSelected(),
 				Contains(`only filterFile`),

pkg/integration/tests/filter_by_path/shared.go

@@ -1,6 +1,7 @@
 package filter_by_path
 
 import (
+	"github.com/jesseduffield/lazygit/pkg/config"
 	. "github.com/jesseduffield/lazygit/pkg/integration/components"
 )
 
@@ -17,6 +18,28 @@ func commonSetup(shell *Shell) {
 	shell.EmptyCommit("none of the two")
 }
 
+func filterByFilterFile(t *TestDriver, keys config.KeybindingConfig) {
+	t.Views().Commits().
+		Focus().
+		Lines(
+			Contains(`none of the two`).IsSelected(),
+			Contains(`both files`),
+			Contains(`only otherFile`),
+			Contains(`only filterFile`),
+		).
+		Press(keys.Universal.FilteringMenu)
+
+	t.ExpectPopup().Menu().
+		Title(Equals("Filtering")).
+		Select(Contains("Enter path to filter by")).
+		Confirm()
+	t.ExpectPopup().Prompt().
+		Title(Equals("Enter path:")).
+		Type("filterF").
+		SuggestionLines(Equals("filterFile")).
+		ConfirmFirstSuggestion()
+}
+
 func postFilterTest(t *TestDriver) {
 	t.Views().Information().Content(Contains("Filtering by 'filterFile'"))