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# frozen_string_literal: true
require "test_helper"
module Byebug
#
# Tests gloabal variable tracing functionality.
#
class TracevarTest < TestCase
def program
strip_line_numbers <<-RUBY
1: module Byebug
2: #
3: # Toy class to test global variable tracing
4: #
5: class #{example_class}
6: def with_verbose(value)
7: previous = $VERBOSE
8: $VERBOSE = value
9: yield
10: ensure
11: $VERBOSE = previous
12: end
13: end
14:
15: #{example_class}.new.with_verbose(true) do
16: byebug
17: $VERBOSE = false
18: $VERBOSE ||= true
19: $VERBOSE &&= false
20: end
21: end
RUBY
end
def test_tracevar_tracks_global_variables
enter "tracevar $VERBOSE", "cont 19", "untracevar $VERBOSE"
debug_code(program)
check_output_includes \
"traced global variable '$VERBOSE' has value 'false'",
"traced global variable '$VERBOSE' has value 'true'"
end
def test_tracevar_stop_makes_program_stop_when_global_var_changes
enter "tracevar $VERBOSE stop", "cont 19", "untracevar $VERBOSE"
debug_code(program) { assert_equal 18, frame.line }
end
def test_tracevar_nostop_does_not_stop_when_global_var_changes
enter "tracevar $VERBOSE nostop", "cont 19", "untracevar $VERBOSE"
debug_code(program) { assert_equal 19, frame.line }
end
def test_tracevar_shows_an_error_message_if_no_global_variable_is_specified
enter "tracevar"
debug_code(program)
check_error_includes("tracevar needs a global variable name")
end
def test_tracevar_shows_an_error_message_if_there_is_no_such_global_var
enter "tracevar $FOO"
debug_code(program)
check_error_includes "'$FOO' is not a global variable."
end
end
end
|
