adding some tests of the editor

Author: grantnelson-wf

playground/internal/editor/editor.go

@@ -79,16 +79,23 @@ func (ce *codeEditor) handleTab(shift, ctrl bool) bool {
 	}
 
 	if shift {
-		// Handle Shift+Tab for un-indenting the current line.
-		// TODO(grantnelson-wf): Implement
-		println("TODO: Handle un-indenting selected lines")
+		ce.removeIndents(startLine, endLine)
 		return true
 	}
+	ce.addIndents(startLine, endLine)
+	return true
+}
 
-	// Handle indenting selected line(s).
+// addIndents adds indents to the non-blank lines in the selection.
+func (ce *codeEditor) addIndents(startLine, endLine int) {
 	// TODO(grantnelson-wf): Implement
-	println("TODO: Handle indenting selected lines")
-	return true
+	println("TODO: addIndents(", startLine, ", ", endLine, ")")
+}
+
+// removeIndents handles un-indenting the non-blank lines in the selection.
+func (ce *codeEditor) removeIndents(startLine, endLine int) {
+	// TODO(grantnelson-wf): Implement
+	println("TODO: removeIndents(", startLine, ", ", endLine, ")")
 }
 
 func (ce *codeEditor) handleMultilineComment(shift, ctrl bool) bool {