[Reddit] New badge and additional testing (#5166)

* fix: added detection of private subs and aded a test

* test: added test for no subscriber info

* feat: added user-karma badge

* refactor: changed class name for testing

Changed the class name to allow testing the whole service with 'reddit'

* refactor: refactored code for code and output style

* refactor: change how variables are passed to be cleaner

Co-authored-by: Caleb Cartwright <calebcartwright@users.noreply.github.com>
Co-authored-by: repo-ranger[bot] <39074581+repo-ranger[bot]@users.noreply.github.com>

services/reddit/user-karma.tester.js

@@ -0,0 +1,80 @@
+'use strict'
+
+const { isMetric } = require('../test-validators')
+const t = (module.exports = require('../tester').createServiceTester())
+
+t.create('user-karma (valid - link)')
+  .get('/link/user_simulator.json')
+  .expectBadge({
+    label: 'u/user_simulator karma (link)',
+    message: isMetric,
+  })
+
+t.create('user-karma (valid - comment')
+  .get('/comment/user_simulator.json')
+  .expectBadge({
+    label: 'u/user_simulator karma (comment)',
+    message: isMetric,
+  })
+
+t.create('user-karma (valid - combined)')
+  .get('/combined/user_simulator.json')
+  .expectBadge({
+    label: 'u/user_simulator karma',
+    message: isMetric,
+  })
+
+t.create('user-karma (non-existing user)')
+  .get('/combined/thisuserdoesnotexistandhopefullyneverwill.json')
+  .expectBadge({
+    label: 'reddit karma',
+    message: 'user not found',
+  })
+
+t.create('user-karma (link - math check)')
+  .get('/link/user_simulator.json')
+  .intercept(nock =>
+    nock('https://www.reddit.com/u')
+      .get('/user_simulator/about.json')
+      .reply(200, { kind: 't2', data: { link_karma: 20, comment_karma: 80 } })
+  )
+  .expectBadge({
+    label: 'u/user_simulator karma (link)',
+    message: '20',
+  })
+
+t.create('user-karma (comment - math check)')
+  .get('/comment/user_simulator.json')
+  .intercept(nock =>
+    nock('https://www.reddit.com/u')
+      .get('/user_simulator/about.json')
+      .reply(200, { kind: 't2', data: { link_karma: 20, comment_karma: 80 } })
+  )
+  .expectBadge({
+    label: 'u/user_simulator karma (comment)',
+    message: '80',
+  })
+
+t.create('user-karma (combined - math check)')
+  .get('/combined/user_simulator.json')
+  .intercept(nock =>
+    nock('https://www.reddit.com/u')
+      .get('/user_simulator/about.json')
+      .reply(200, { kind: 't2', data: { link_karma: 20, comment_karma: 80 } })
+  )
+  .expectBadge({
+    label: 'u/user_simulator karma',
+    message: '100',
+  })
+
+t.create('user-karma (combined - missing data)')
+  .get('/combined/user_simulator.json')
+  .intercept(nock =>
+    nock('https://www.reddit.com/u')
+      .get('/user_simulator/about.json')
+      .reply(200, { kind: 't2', data: { link_karma: 20 } })
+  )
+  .expectBadge({
+    label: 'reddit karma',
+    message: 'invalid response data',
+  })