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# ==== Purpose ====
#
# Verify that a readonly variable has the expected default value and
# cannot be set to other values.
#
# ==== Requirements ====
#
# R1. The initial value should be equal to the expected default value.
#
# R2. A specified set of valid values should all result in an error
# when trying to set them. The value shall be unchagned.
#
# R3. Setting the value to DEFAULT shall fail for the variable.
#
# ==== Usage ====
#
# --let $scope = {session|global}
# --let $name = NAME
# [--let $alias = NAME]
# --let $default = VALUE
# --let $values = JSON_ARRAY
# --source scenarios_for_readonly_sysvar.inc
#
# Parameters:
#
# $scope
# The scope to test.
#
# All other parameters
# See json_sysvar_spec.inc
--echo ==== Testing SET @@$scope.$name [read-only] ====
--echo # Initial value is default
--let $expect_value = $default
--source assertions_for_sysvar_and_alias_value.inc
--echo # Valid values for *read-only* variable cannot be set
# Iterate over values, set the variable, and verify that it worked.
--let $json_array = $values
--source $json_value_start
while (!$json_value_done) {
if ($mask_value) {
--replace_result $json_value_value VALUE
}
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
eval SET @@$scope.$name = $json_value_value;
--let $expect_value = $default
--source assertions_for_sysvar_and_alias_value.inc
--source $json_value_next
}
--echo # Setting default value for variable
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
eval SET @@$scope.$name = DEFAULT;
--let $expect_value = $default
--source assertions_for_sysvar_and_alias_value.inc
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