ResponseTemplating: now format='epoch' is read as zero when passed as input to math

[code-and-such]

The problem

"body" : "[{{#each (range 0 20) as |index|}} [ {{math (now format='epoch') '+' (math index '*' 86400000)}}, {{randomDecimal lower=190.0 upper=220.0}} ] {{#if @last}}{{else}},{{/if}}{{/each}}]",

This will generate a body that looks like

[ [ 0, 196.3580633809619 ] , [ 86400000, 196.39208777016043 ] , [ 172800000, 197.86647674155523 ] , [ 259200000, 205.36354784502032 ] , [ 345600000, 192.65030129839516 ] ..... ]

As you can see it seems like math treats the output from (now format='epoch') as zero. If I use now format='epoch' outside the context of math, it works like a charm.

Might it be that now format='epoch' returns a string or something else that makes math lay down and die?

Details

• Version: 2.33.2
• Starting the server docker run -d --name wiremock-timeseries --network host -v $PWD/timeseries-wiremock:/home/wiremock -e uid=$(id -u) wiremock/wiremock --port="8083" --local-response-templating --verbose
• The full stub (I removed a bunch of stuff I do not want to leave the company)

{
  "id" : "04056434-098e-3775-a070-1ca35778aa25",
  "request" : {
    "urlPattern": "/.*",
    "method" : "POST"
  },
  "response" : {
    "transformers": ["response-template"],
    "status" : 200,
    "body" : "[{{#each (range 0 20) as |index|}} [ {{math (now format='epoch') '+' (math index '*' 86400000)}}, {{randomDecimal lower=190.0 upper=220.0}} ] {{#if @last}}{{else}},{{/if}}{{/each}}]",
    "headers" : {
      "Date" : "Mon, 05 Sep 2022 14:17:55 GMT",
      "Content-Type" : "application/json",
      "X-Content-Type-Options" : "nosniff",
      "X-XSS-Protection" : "1; mode=block",
      "Cache-Control" : "no-cache, no-store, max-age=0, must-revalidate",
      "Pragma" : "no-cache",
      "Expires" : "0"
    }
  },
  "uuid" : "04056434-098e-3775-a070-1ca35778aa25"
}

[tomakehurst]

Confirmed this is an issue. The maths helper can't cope with a date object as an input.

You can work around this by assigning it to a variable, which will cast it to a String e.g.

{{#assign 'currentEpoch'}}{{now format='epoch'}}{{/assign}}
{{math currentEpoch '+' (math index '*' 86400000)}}