gdb/testsuite/gdb.python/py-parameter.exp

# Copyright (C) 2010-2022 Free Software Foundation, Inc.

# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

# This file is part of the GDB testsuite.
# It tests gdb.parameter and gdb.Parameter.

load_lib gdb-python.exp

# Start with a fresh gdb.
clean_restart

# Skip all tests if Python scripting is not enabled.
if { [skip_python_tests] } { continue }

proc_with_prefix test_directories { } {
    # We use "." here instead of ":" so that this works on win32 too.
    if { [is_remote host] } {
	# Don't match $srcdir/$subdir because proc gdb_reinitialize_dir
	# doesn't set search directories on remote host.
	set directories ".*\\\$cdir.\\\$cwd"
    } else {
	set escaped_directory [string_to_regexp "$::srcdir/$::subdir"]
	set directories "$escaped_directory.\\\$cdir.\\\$cwd"
    }
    gdb_test "python print (gdb.parameter ('directories'))" $directories
}

proc_with_prefix test_data_directory { } {
    clean_restart

    # Check we can correctly read the data-directory parameter.  First,
    # grab the value as read directly from the GDB CLI.
    set dd ""
    gdb_test_multiple "show data-directory" \
	"find the initial data-directory value" {
	    -re -wrap "GDB's data directory is \"(\[^\r\n\]+)\"\\." {
		set dd $expect_out(1,string)
		pass $gdb_test_name
	    }
	}

    # Now print the data-directory from Python.
    gdb_test "python print (gdb.parameter ('data-directory'))" $dd

    # Next change the data-directory to a relative path.  Internally GDB
    # will resolve this to an absolute path, which Python should then see.
    #
    # GDB is currently running in '...../build/gdb/testsuite/' and the
    # test output is being written to:
    #   ...../build/gdb/testsuite/outputs/gdb.python/py-parameter/
    #
    # So create the relative path './outputs/gdb.python/py-parameter/' and
    # set the data-directory to that, we should then see the absolute path.

    set abs_path_to_output_dir [standard_output_file ""]
    set abs_path_to_cwd $::objdir
    set rel_path_to_output_dir \
	[file join "." [string replace ${abs_path_to_output_dir} 0 \
			    [string length ${abs_path_to_cwd}] ""]]
    gdb_test_no_output "set data-directory ${rel_path_to_output_dir}"

    gdb_test "python print (gdb.parameter ('data-directory'))" \
	${abs_path_to_output_dir} \
	"python sees absolute version of data-directory path"

    # While we're here, check we see the correct path at GDB's CLI.
    gdb_test "show data-directory" \
	"GDB's data directory is \"${abs_path_to_output_dir}\"\\." \
	"check modified data-directory at the CLI"

    # Now lets set the data-directory back to what it was initially.
    gdb_test_no_output "set data-directory ${dd}" \
	"set data-directory back to its original value"

    # And check we see the restored value at CLI and from Python.
    gdb_test "show data-directory" \
	"GDB's data directory is \"${dd}\"\\." \
	"check original data-directory was restored at the CLI"

    gdb_test "python print (gdb.parameter ('data-directory'))" ${dd} \
	"python sees restored data-directory value"
}

# Test a simple boolean parameter.
proc_with_prefix test_boolean_parameter { } {
    clean_restart

    gdb_test_multiline "Simple gdb booleanparameter" \
	"python" "" \
	"class TestParam (gdb.Parameter):" "" \
	"   \"\"\"When enabled, test param does something useful. When disabled, does nothing.\"\"\"" "" \
	"   show_doc = \"Show the state of the boolean test-param\"" ""\
	"   set_doc = \"Set the state of the boolean test-param\"" "" \
	"   def get_show_string (self, pvalue):" ""\
	"      return \"The state of the Test Parameter is \" + pvalue" ""\
	"   def get_set_string (self):" ""\
	"      val = \"on\"" ""\
	"      if (self.value == False):" ""\
	"         val = \"off\"" ""\
	"      return \"Test Parameter has been set to \" + val" ""\
	"   def __init__ (self, name):" "" \
	"      super (TestParam, self).__init__ (name, gdb.COMMAND_DATA, gdb.PARAM_BOOLEAN)" "" \
	"      self.value = True" "" \
	"test_param = TestParam ('print test-param')" ""\
	"end"

    gdb_test "python print (test_param.value)" "True" \
	"test boolean parameter value is True"
    gdb_test "show print test-param" \
	"The state of the Test Parameter is on.*" "show parameter on"
    gdb_test "set print test-param off" \
	"Test Parameter has been set to off" "turn off parameter"
    gdb_test "show print test-param" \
	"The state of the Test Parameter is off.*" "show parameter off"
    gdb_test "python print (test_param.value)" "False" \
	"test boolean parameter value is False"
    gdb_test "help show print test-param" \
	[multi_line \
	     "Show the state of the boolean test-param" \
	     "When enabled, test param does something useful\\. When disabled, does nothing\\."] \
	"test show help"
    gdb_test "help set print test-param" \
	"Set the state of the boolean test-param.*" "test set help"
    gdb_test "help set print" \
	"set print test-param -- Set the state of the boolean test-param.*" \
	"test general help"
}

# Test an enum parameter.
proc_with_prefix test_enum_parameter { } {
    clean_restart

    gdb_test_multiline "enum gdb parameter" \
	"python" "" \
	"class TestEnumParam (gdb.Parameter):" "" \
	"   \"\"\"When set, test param does something useful. When disabled, does nothing.\"\"\"" "" \
	"   show_doc = \"Show the state of the enum\"" ""\
	"   set_doc = \"Set the state of the enum\"" "" \
	"   def get_show_string (self, pvalue):" ""\
	"      return \"The state of the enum is \" + pvalue" ""\
	"   def get_set_string (self):" ""\
	"      return \"The state of the enum has been set to \" + self.value" ""\
	"   def __init__ (self, name):" "" \
	"      super (TestEnumParam, self).__init__ (name, gdb.COMMAND_DATA, gdb.PARAM_ENUM, \[\"one\", \"two\"\])" "" \
	"      self.value = \"one\"" "" \
	"test_enum_param = TestEnumParam ('print test-enum-param')" ""\
	"end"

    gdb_test "python print (test_enum_param.value)" "one" \
	"test enum parameter value is one"
    gdb_test "show print test-enum-param" \
	"The state of the enum is one.*" \
	"show parameter is initial value"
    gdb_test "set print test-enum-param two" \
	"The state of the enum has been set to two" "set enum to two"
    gdb_test "show print test-enum-param" \
	"The state of the enum is two.*" "show parameter is new value"
    gdb_test "python print (test_enum_param.value)" "two" \
	"test enum parameter value is two"
    gdb_test "set print test-enum-param three" \
	"Undefined item: \"three\".*" "set invalid enum parameter"
}

# Test a file parameter.
proc_with_prefix test_file_parameter { } {
    clean_restart

    gdb_test_multiline "file gdb parameter" \
	"python" "" \
	"class TestFileParam (gdb.Parameter):" "" \
	"   \"\"\"When set, test param does something useful. When disabled, does nothing.\"\"\"" "" \
	"   show_doc = \"Show the name of the file\"" ""\
	"   set_doc = \"Set the name of the file\"" "" \
	"   def get_show_string (self, pvalue):" ""\
	"      return \"The name of the file is \" + pvalue" ""\
	"   def get_set_string (self):" ""\
	"      return \"The name of the file has been changed to \" + self.value" ""\
	"   def __init__ (self, name):" "" \
	"      super (TestFileParam, self).__init__ (name, gdb.COMMAND_FILES, gdb.PARAM_FILENAME)" "" \
	"      self.value = \"foo.txt\"" "" \
	"test_file_param = TestFileParam ('test-file-param')" ""\
	"end"

    gdb_test "python print (test_file_param.value)" "foo.txt" \
	"test file parameter value"
    gdb_test "show test-file-param" \
	"The name of the file is foo.txt.*" "show initial file value"
    gdb_test "set test-file-param bar.txt" \
	"The name of the file has been changed to bar.txt" \
	"set new file parameter" 1
    gdb_test "show test-file-param" \
	"The name of the file is bar.txt.*" "show new file value"
    gdb_test "python print (test_file_param.value)" \
	"bar.txt" "test new file parameter value"
    gdb_test "set test-file-param" "Argument required.*"
}

# Test a parameter that is not documented.
proc_with_prefix test_undocumented_parameter { } {
    clean_restart

    gdb_test_multiline "Simple gdb booleanparameter" \
	"python" "" \
	"class TestUndocParam (gdb.Parameter):" "" \
	"   def get_show_string (self, pvalue):" ""\
	"      return \"The state of the Test Parameter is \" + pvalue" ""\
	"   def get_set_string (self):" ""\
	"      val = \"on\"" ""\
	"      if (self.value == False):" ""\
	"         val = \"off\"" ""\
	"      return \"Test Parameter has been set to \" + val" ""\
	"   def __init__ (self, name):" "" \
	"      super (TestUndocParam, self).__init__ (name, gdb.COMMAND_DATA, gdb.PARAM_BOOLEAN)" "" \
	"      self.value = True" "" \
	"test_undoc_param = TestUndocParam ('print test-undoc-param')" ""\
	"end"

    gdb_test "show print test-undoc-param" \
	"The state of the Test Parameter is on.*" "show parameter on"
    gdb_test "set print test-undoc-param off" \
	"Test Parameter has been set to off" "turn off parameter"
    gdb_test "show print test-undoc-param" \
	"The state of the Test Parameter is off.*" "show parameter off"
    gdb_test "python print (test_undoc_param.value)" \
	"False" "test undocumented parameter value is False"
    gdb_test "help show print test-undoc-param" \
	[multi_line \
	     "Show the current value of 'print test-undoc-param'\\." \
	     "This command is not documented.*"] \
	"test show help"
    gdb_test "help set print test-undoc-param" \
	"This command is not documented.*" "test set help"
    gdb_test "help set print" \
	"set print test-undoc-param -- Set the current value of 'print test-undoc-param'\\..*" \
	"test general help"
}

# Test a parameter that is not documented in any way..
proc_with_prefix test_really_undocumented_parameter { } {
    clean_restart

    gdb_test_multiline "Simple gdb booleanparameter" \
	"python" "" \
	"class TestNodocParam (gdb.Parameter):" "" \
	"   def __init__ (self, name):" "" \
	"      super (TestNodocParam, self).__init__ (name, gdb.COMMAND_DATA, gdb.PARAM_BOOLEAN)" "" \
	"      self.value = True" "" \
	"test_nodoc_param = TestNodocParam ('print test-nodoc-param')" ""\
	"end"

    gdb_test "show print test-nodoc-param" \
	"The current value of 'print test-nodoc-param' is \"on\"\\." \
	"show parameter on"
    gdb_test_no_output "set print test-nodoc-param off" \
	"turn off parameter"
    gdb_test "show print test-nodoc-param" \
	"The current value of 'print test-nodoc-param' is \"off\"\\." \
	"show parameter off"
    gdb_test "python print (test_nodoc_param.value)" \
	"False" "test really undocumented parameter value is False"
    gdb_test "help show print test-nodoc-param" \
	[multi_line \
	     "Show the current value of 'print test-nodoc-param'\\." \
	     "This command is not documented.*"] \
	"test show help"
    gdb_test "help set print test-nodoc-param" \
	"This command is not documented.*" "test set help"
    gdb_test "help set print" \
	"set print test-nodoc-param -- Set the current value of 'print test-nodoc-param'\\..*" \
	"test general help"
}

# Test deprecated API. Do not use in your own implementations.
proc_with_prefix test_deprecated_api_parameter { } {
    clean_restart

    gdb_test_multiline "Simple gdb booleanparameter" \
	"python" "" \
	"class TestParam (gdb.Parameter):" "" \
	"   \"\"\"When enabled, test param does something useful. When disabled, does nothing.\"\"\"" "" \
	"   show_doc = \"State of the Test Parameter\"" ""\
	"   set_doc = \"Set the state of the Test Parameter\"" "" \
	"   def __init__ (self, name):" "" \
	"      super (TestParam, self).__init__ (name, gdb.COMMAND_DATA, gdb.PARAM_BOOLEAN)" "" \
	"      self.value = True" "" \
	"test_param = TestParam ('print test-param')" ""\
	"end"

    gdb_test "python print (test_param.value)" "True" \
	"test deprecated API parameter value is True"
    gdb_test "show print test-param" \
	"The current value of 'print test-param' is \"on\"\\." \
	"show parameter on"
    gdb_test_no_output "set print test-param off" "turn off parameter"
    gdb_test "show print test-param" \
	"The current value of 'print test-param' is \"off\"\\." \
	"show parameter off"
    gdb_test "python print (test_param.value)" "False" \
	"test deprecated API parameter value is False"
    gdb_test "help show print test-param" \
	[multi_line \
	     "State of the Test Parameter" \
	     "When enabled, test param does something useful\\. When disabled, does nothing\\."] \
	"test show help"
    gdb_test "help set print test-param" \
	"Set the state of the Test Parameter.*" "test set help"
    gdb_test "help set print" \
	"set print test-param -- Set the state of the Test Parameter.*" \
	"test general help"
}

proc_with_prefix test_integer_parameter { } {
    foreach_with_prefix kind {PARAM_ZUINTEGER PARAM_ZUINTEGER_UNLIMITED} {
	clean_restart

	gdb_test_multiline "create parameter" \
	    "python" "" \
	    "class TestNodocParam (gdb.Parameter):" "" \
	    "   def __init__ (self, name):" "" \
	    "      super (TestNodocParam, self).__init__ (name, gdb.COMMAND_DATA, gdb.$kind)" "" \
	    "      self.value = 0" "" \
	    "test_param_$kind = TestNodocParam ('test-$kind')" "" \
	    "end"

	gdb_test "python print(gdb.parameter('test-$kind'))" "0"

	gdb_test "python test_param_$kind.value = -5" "RuntimeError: Range exceeded.*"

	if {$kind == "PARAM_ZUINTEGER"} {
	    gdb_test "python test_param_$kind.value = -1" "RuntimeError: Range exceeded.*"
	} elseif {$kind == "PARAM_ZUINTEGER_UNLIMITED"} {
	    gdb_test_no_output "python test_param_$kind.value = -1" \
		"check that PARAM_ZUINTEGER value can be set to -1"
	    gdb_test "python print(gdb.parameter('test-$kind'))" "-1" \
		"check that PARAM_ZUINTEGER value is -1 after setting"
	} else {
	    error "invalid kind: $kind"
	}
    }
}

proc_with_prefix test_throwing_parameter { } {
    clean_restart

    gdb_test_multiline "Throwing gdb parameter" \
	"python" "" \
	"class TestThrowParam (gdb.Parameter):" "" \
	"   def __init__ (self, name):" "" \
	"      super (TestThrowParam, self).__init__ (name, gdb.COMMAND_DATA, gdb.PARAM_STRING)" "" \
	"      self.value = True" "" \
	"   def get_set_string (self):" "" \
	"      raise gdb.GdbError('Ordinary gdb error')" "" \
	"test_throw_param = TestThrowParam ('print test-throw-param')" ""\
	"end"

    gdb_test "set print test-throw-param whoops" \
	"Ordinary gdb error" \
	"gdb.GdbError does not show Python stack"
}

test_directories
test_data_directory
test_boolean_parameter
test_enum_parameter
test_file_parameter
test_undocumented_parameter
test_really_undocumented_parameter
test_deprecated_api_parameter
test_integer_parameter
test_throwing_parameter

# This caused a gdb crash.
gdb_test "python print(gdb.parameter('endian'))" "auto" \
    "print endian parameter"