[lldb][NFC] Add basic test for GUI command

Summary:
This adds a basic test for the GUI command. Just tests that it starts up, that we can quit the gui
and help window, and that the basic UI elements are rendered. Mostly testing the waters how
testing this command will do on the bots or if that will cause some serious issues when we do
fancy ncurses stuff.

Reviewers: labath, clayborg

Reviewed By: labath

Subscribers: JDevlieghere, lldb-commits

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D67018

llvm-svn: 370625

lldb/packages/Python/lldbsuite/test/commands/gui/basic/Makefile

@@ -0,0 +1,3 @@
+LEVEL = ../../../make
+C_SOURCES := main.c
+include $(LEVEL)/Makefile.rules

lldb/packages/Python/lldbsuite/test/commands/gui/basic/TestGuiBasic.py

@@ -0,0 +1,58 @@
+"""
+Test that the 'gui' displays the help window and basic UI.
+"""
+
+import lldb
+from lldbsuite.test.decorators import *
+from lldbsuite.test.lldbtest import *
+from lldbsuite.test.lldbpexpect import PExpectTest
+
+class BasicGuiCommandTest(PExpectTest):
+
+    mydir = TestBase.compute_mydir(__file__)
+
+    def test_gui(self):
+        self.build()
+
+        self.launch(executable=self.getBuildArtifact("a.out"))
+        self.expect('br set -f main.c -p "// Break here"', substrs=["Breakpoint 1", "address ="])
+        self.expect("run", substrs=["stop reason ="])
+
+
+        escape_key = chr(27).encode()
+
+        # Start the GUI for the first time and check for the welcome window.
+        self.child.sendline("gui")
+        self.child.expect_exact("Welcome to the LLDB curses GUI.")
+
+        # Press escape to quit the welcome screen
+        self.child.send(escape_key)
+        # Press escape again to quit the gui
+        self.child.send(escape_key)
+        self.expect_prompt()
+
+        # Start the GUI a second time, this time we should have the normal GUI.
+        self.child.sendline("gui")
+        # Check for GUI elements in the menu bar.
+        self.child.expect_exact("Target")
+        self.child.expect_exact("Process")
+        self.child.expect_exact("Thread")
+        self.child.expect_exact("View")
+        self.child.expect_exact("Help")
+
+        # Check the sources window.
+        self.child.expect_exact("Sources")
+        self.child.expect_exact("main")
+        self.child.expect_exact("funky_var_name_that_should_be_rendered")
+
+        # Check the variable window.
+        self.child.expect_exact("Variables")
+        self.child.expect_exact("(int) funky_var_name_that_should_be_rendered = 22")
+
+        # Check the bar at the bottom.
+        self.child.expect_exact("Frame:")
+
+        # Press escape to quit the gui
+        self.child.send(escape_key)
+
+        self.quit()

lldb/packages/Python/lldbsuite/test/commands/gui/basic/main.c

@@ -0,0 +1,4 @@
+int main(int argc, char **argv) {
+  int funky_var_name_that_should_be_rendered = 22;
+  return 0; // Break here
+}