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"""
Test that lldb persistent variables works correctly.
"""
import lldb
from lldbsuite.test.lldbtest import *
class PersistentVariablesTestCase(TestBase):
def test_persistent_variables(self):
"""Test that lldb persistent variables works correctly."""
self.build()
lldbutil.run_to_source_breakpoint(
self, "// break here", lldb.SBFileSpec("main.c")
)
self.runCmd("expr int $i = i")
self.expect_expr("$i == i", result_type="bool", result_value="true")
self.expect_expr("$i + 1", result_type="int", result_value="6")
self.expect_expr("$i + 3", result_type="int", result_value="8")
self.expect_expr("$1 + $2", result_type="int", result_value="14")
self.expect_expr("$3", result_type="int", result_value="14")
self.expect_expr("$2", result_type="int", result_value="8")
self.expect_expr("(int)-2", result_type="int", result_value="-2")
self.expect_expr("$4", result_type="int", result_value="-2")
self.expect_expr("$4 > (int)31", result_type="bool", result_value="false")
self.expect_expr("(long)$4", result_type="long", result_value="-2")
# Try assigning an existing persistent veriable with a numeric name.
self.expect(
"expr int $2 = 1234",
error=True,
substrs=[
"Error [IRForTarget]: Names starting with $0, $1, ... are reserved for use as result names"
],
)
# $2 should still have its original value.
self.expect_expr("$2", result_type="int", result_value="8")
# Try assigning an non-existing persistent veriable with a numeric name.
self.expect(
"expr int $200 = 3",
error=True,
substrs=[
"Error [IRForTarget]: Names starting with $0, $1, ... are reserved for use as result names"
],
)
# Test that $200 wasn't created by the previous expression.
self.expect(
"expr $200", error=True, substrs=["use of undeclared identifier '$200'"]
)
# Try redeclaring the persistent variable with the same type.
# This should be rejected as we treat them as if they are globals.
self.expect(
"expr int $i = 123",
error=True,
substrs=["redefinition of persistent variable '$i'"],
)
self.expect_expr("$i", result_type="int", result_value="5")
# Try redeclaring the persistent variable with another type. Should
# also be rejected.
self.expect(
"expr long $i = 123",
error=True,
substrs=["redefinition of persistent variable '$i'"],
)
self.expect_expr("$i", result_type="int", result_value="5")
# Try assigning the persistent variable a new value.
self.expect("expr $i = 55")
self.expect_expr("$i", result_type="int", result_value="55")
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