migrate staging tests

pkg/integration/components/actions.go

@@ -31,3 +31,10 @@ func (self *Actions) ContinueOnConflictsResolved() {
 		Content(Contains("all merge conflicts resolved. Continue?")).
 		Confirm()
 }
+
+func (self *Actions) ConfirmDiscardLines() {
+	self.t.ExpectPopup().Confirmation().
+		Title(Equals("Unstage lines")).
+		Content(Contains("Are you sure you want to delete the selected lines")).
+		Confirm()
+}

pkg/integration/components/commit_message_panel_driver.go

@@ -28,7 +28,21 @@ func (self *CommitMessagePanelDriver) AddNewline() *CommitMessagePanelDriver {
 }
 
 func (self *CommitMessagePanelDriver) Clear() *CommitMessagePanelDriver {
-	panic("Clear method not yet implemented!")
+	// clearing multiple times in case there's multiple lines
+	//  (the clear button only clears a single line at a time)
+	maxAttempts := 100
+	for i := 0; i < maxAttempts+1; i++ {
+		if self.getViewDriver().getView().Buffer() == "" {
+			break
+		}
+
+		self.t.press(ClearKey)
+		if i == maxAttempts {
+			panic("failed to clear commit message panel")
+		}
+	}
+
+	return self
 }
 
 func (self *CommitMessagePanelDriver) Confirm() {

pkg/integration/components/test_driver.go

@@ -37,6 +37,13 @@ func (self *TestDriver) press(keyStr string) {
 	self.gui.PressKey(keyStr)
 }
 
+// Should only be used in specific cases where you're doing something weird!
+// E.g. invoking a global keybinding from within a popup.
+// You probably shouldn't use this function, and should instead go through a view like t.Views().Commit().Focus().Press(...)
+func (self *TestDriver) GlobalPress(keyStr string) {
+	self.press(keyStr)
+}
+
 func (self *TestDriver) typeContent(content string) {
 	for _, char := range content {
 		self.press(string(char))