add test to limit maximum number of templates (#340)

Co-authored-by: Matt Chapman <[email protected]>

test/template-files-test.js

@@ -15,6 +15,8 @@ const expect = chai.expect
 const jsonata = require('jsonata')
 const jsyaml = require('js-yaml')
 
+const MAX_TEMPLATE_COUNT = 350 // Current practical limit for rendering template gallery
+
 const markdownDirectoryName = 'markdown'
 const templateMetadataFilename = 'template-metadata.json'
 const templateMetadata = require('../resources/' + templateMetadataFilename)
@@ -27,6 +29,10 @@ describe('Template files', function () {
     }
   })
 
+  it('template count must be within agreed threshold', function () {
+    expect(templateMetadata.templates.length).lessThanOrEqual(MAX_TEMPLATE_COUNT)
+  })
+
   it('must not contain account-name in action or trigger interfaces', function () {
     let noAccountNameFound = true
     for (const template of templateMetadata.templates) {