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|
source common.sh
set +x
expect_trace() {
expr="$1"
expect="$2"
actual=$(
nix-instantiate \
--trace-function-calls \
--expr "$expr" 2>&1 \
| grep "function-trace" \
| sed -e 's/ [0-9]*$//' \
|| true
)
echo -n "Tracing expression '$expr'"
msg=$(diff -swB \
<(echo "$expect") \
<(echo "$actual")
) && result=0 || result=$?
if [ $result -eq 0 ]; then
echo " ok."
else
echo " failed. difference:"
echo "$msg"
return $result
fi
}
# failure inside a tryEval
expect_trace 'builtins.tryEval (throw "example")' "
function-trace entered «string»:1:1 at
function-trace entered «string»:1:19 at
function-trace exited «string»:1:19 at
function-trace exited «string»:1:1 at
"
# Missing argument to a formal function
expect_trace '({ x }: x) { }' "
function-trace entered «string»:1:1 at
function-trace exited «string»:1:1 at
"
# Too many arguments to a formal function
expect_trace '({ x }: x) { x = "x"; y = "y"; }' "
function-trace entered «string»:1:1 at
function-trace exited «string»:1:1 at
"
# Not enough arguments to a lambda
expect_trace '(x: y: x + y) 1' "
function-trace entered «string»:1:1 at
function-trace exited «string»:1:1 at
"
# Too many arguments to a lambda
expect_trace '(x: x) 1 2' "
function-trace entered «string»:1:1 at
function-trace exited «string»:1:1 at
"
# Not a function
expect_trace '1 2' "
function-trace entered «string»:1:1 at
function-trace exited «string»:1:1 at
"
|
