gcloud functions call throwing invalid JSON error - json

Question

I'm following this tutorial on how to set up a local gcloud functions environment. I have this script set up and deployed:
exports.helloGET = (req, res) => {
console.log(req.body);
// Example input: {“name”: “Junior”}
if (req.body.name === undefined) {
// This is an error case, as “name” is required.
res.status(400).send('No name defined!');
} else {
console.log(req.body.name);
res.status(200).send('Hello ' + req.body.name);
}
};
I tried testing this function on the Cloud GUI (the website) and it works when you test it with {"name": "Junior"}. It returns Hello Junior as expected.
I now want to be able to run the test locally from the command line, so referring to the docs, they give the example:
gcloud functions call helloWorld --data='{"message": "Hello World!"}'
However, when I try to run the following:
gcloud functions call helloGET --data='{"name": "Junior"}' --region=northamerica-northeast1
I keep getting
ERROR: (gcloud.functions.call) Invalid value for [--data]: Is not a valid JSON: Expecting property name enclosed in double quotes: line 1 column 2 (char 1)
Why is this happening? I'm doing exactly what the docs & the tutorial are doing.

Answer 1

I am unable to repro your issue (on Linux).
I wonder whether you're:
using a non-Linux OS and this an incompatibility
inadvertently including non-standard ' or "
Deployed:
gcloud functions deploy hello \
--entry-point=hello \
--runtime=nodejs12 \
--trigger-http \
--allow-unauthenticated \
--region=${REGION} \
--project=${PROJECT}
Then:
gcloud functions call hello \
--data='{"name":"Freddie"}' \
--region=${REGION} \
--project=${PROJECT}
executionId: 7igxh5sfvjvk
result: Hello Freddie
And:
gcloud functions call hello \
--data='{"name":"Freddie"}' \
--region=${REGION} \
--project=${PROJECT} \
--log-http
=======================
==== request start ====
uri: https://cloudfunctions.googleapis.com/v1/projects/.../functions/hello:call?alt=json
method: POST
== headers start ==
b'Authorization': --- Token Redacted ---
b'accept': b'application/json'
b'accept-encoding': b'gzip, deflate'
b'content-length': b'34'
b'content-type': b'application/json'
== headers end ==
== body start ==
{"data": "{\"name\":\"Freddie\"}"}
== body end ==
==== request end ====
---- response start ----
status: 200
-- headers start --
...
-- body start --
{
"executionId": "7igx3sfj3ate",
"result": "Hello Freddie"
}
-- body end --
total round trip time (request+response): 0.289 secs
---- response end ----
----------------------
executionId: 7igx3sfj3ate
result: Hello Freddie
NOTE curl encodes the value of data as "{\"name\":\"Freddie\"}
And:
ENDPOINT=$(\
gcloud functions describe hello \
--project=${PROJECT} \
--format="value(httpsTrigger.url)")
TOKEN=$(gcloud auth print-access-token)
curl \
--request POST \
--header "Content-Type: application/json" \
--header "Authorization: Bearer ${TOKEN}" \
--data '{"name":"Freddie"}' \
${ENDPOINT}
Hello Freddie