"""
Tests imported namespaces in C++.
"""
import lldb
from lldbsuite.test.lldbtest import *
import lldbsuite.test.lldbutil as lldbutil

class TestCppNsImport(TestBase):

    mydir = TestBase.compute_mydir(__file__)

    @expectedFailureFreeBSD("llvm.org/pr25925")
    @expectedFailureGcc(None, ['>=', '4.9'])
    def test_with_run_command(self):
        """Tests imported namespaces in C++."""
        self.build()

        # Get main source file
        src_file = "main.cpp"
        src_file_spec = lldb.SBFileSpec(src_file)
        self.assertTrue(src_file_spec.IsValid(), "Main source file")

        # Get the path of the executable
        cwd = os.getcwd()
        exe_file = "a.out"
        exe_path  = os.path.join(cwd, exe_file)

        # Load the executable
        target = self.dbg.CreateTarget(exe_path)
        self.assertTrue(target.IsValid(), VALID_TARGET)

        # Break on main function
        break_0 = target.BreakpointCreateBySourceRegex("// break 0", src_file_spec)
        self.assertTrue(break_0.IsValid() and break_0.GetNumLocations() >= 1, VALID_BREAKPOINT)
        break_1 = target.BreakpointCreateBySourceRegex("// break 1", src_file_spec)
        self.assertTrue(break_1.IsValid() and break_1.GetNumLocations() >= 1, VALID_BREAKPOINT)

        # Launch the process
        args = None
        env = None
        process = target.LaunchSimple(args, env, self.get_process_working_directory())
        self.assertTrue(process.IsValid(), PROCESS_IS_VALID)

        # Get the thread of the process
        self.assertTrue(process.GetState() == lldb.eStateStopped, PROCESS_STOPPED)
        thread = lldbutil.get_stopped_thread(process, lldb.eStopReasonBreakpoint)

        # Get current fream of the thread at the breakpoint
        frame = thread.GetSelectedFrame()

        # Test imported namespaces
        test_result = frame.EvaluateExpression("n")
        self.assertTrue(test_result.IsValid() and test_result.GetValueAsSigned() == 1, "n = 1")

        test_result = frame.EvaluateExpression("N::n")
        self.assertTrue(test_result.IsValid() and test_result.GetValueAsSigned() == 1, "N::n = 1")

        test_result = frame.EvaluateExpression("nested")
        self.assertTrue(test_result.IsValid() and test_result.GetValueAsSigned() == 3, "nested = 3")

        test_result = frame.EvaluateExpression("anon")
        self.assertTrue(test_result.IsValid() and test_result.GetValueAsSigned() == 2, "anon = 2")

        test_result = frame.EvaluateExpression("global")
        self.assertTrue(test_result.IsValid() and test_result.GetValueAsSigned() == 4, "global = 4")

        test_result = frame.EvaluateExpression("fun_var")
        self.assertTrue(test_result.IsValid() and test_result.GetValueAsSigned() == 9, "fun_var = 9")

        test_result = frame.EvaluateExpression("Fun::fun_var")
        self.assertTrue(test_result.IsValid() and test_result.GetValueAsSigned() == 0, "Fun::fun_var = 0")

        test_result = frame.EvaluateExpression("not_imported")
        self.assertTrue(test_result.IsValid() and test_result.GetValueAsSigned() == 35, "not_imported = 35")

        # Currently there is no way to distinguish between "::imported" and "imported" in ClangExpressionDeclMap so this fails
        #test_result = frame.EvaluateExpression("::imported")
        #self.assertTrue(test_result.IsValid() and test_result.GetValueAsSigned() == 89, "::imported = 89")

        test_result = frame.EvaluateExpression("Imported::imported")
        self.assertTrue(test_result.IsValid() and test_result.GetValueAsSigned() == 99, "Imported::imported = 99")
        
        test_result = frame.EvaluateExpression("imported")
        self.assertTrue(test_result.IsValid() and test_result.GetError().Fail(), "imported is ambiguous")

        test_result = frame.EvaluateExpression("single")
        self.assertTrue(test_result.IsValid() and test_result.GetValueAsSigned() == 3, "single = 3")

        # Continue to second breakpoint
        process.Continue()

        # Get the thread of the process
        self.assertTrue(process.GetState() == lldb.eStateStopped, PROCESS_STOPPED)
        thread = lldbutil.get_stopped_thread(process, lldb.eStopReasonBreakpoint)

        # Get current fream of the thread at the breakpoint
        frame = thread.GetSelectedFrame()

        # Test function inside namespace
        test_result = frame.EvaluateExpression("fun_var")
        self.assertTrue(test_result.IsValid() and test_result.GetValueAsSigned() == 5, "fun_var = 5")