fix(i18n): combine i18n integration and unit test

* combined i18n tests to allow for easier snapshot updates

src/components/i18n/__tests__/__snapshots__/i18n.test.js.snap

@@ -7,6 +7,78 @@ Object {
 }
 `;
 
+exports[`I18n Component should generate a predictable pot output snapshot: pot output 1`] = `
+"msgid \\"\\"
+msgstr \\"\\"
+\\"Content-Type: text/plain; charset=UTF-8\\\\n\\"
+
+#: src/components/rhelGraphCard/rhelGraphCard.js:80
+msgid \\"curiosity-graph.legendSocketsLabel\\"
+msgstr \\"\\"
+
+#: src/components/rhelGraphCard/rhelGraphCard.js:87
+msgid \\"curiosity-graph.legendSocketsThresholdLabel\\"
+msgstr \\"\\"
+
+#: src/common/graphHelpers.js:62
+msgid \\"curiosity-graph.tooltipPreviousLabelDaily\\"
+msgstr \\"\\"
+
+#: src/common/graphHelpers.js:55
+msgid \\"curiosity-graph.tooltipPreviousLabelMonthly\\"
+msgstr \\"\\"
+
+#: src/common/graphHelpers.js:58
+msgid \\"curiosity-graph.tooltipPreviousLabelQuarterly\\"
+msgstr \\"\\"
+
+#: src/common/graphHelpers.js:52
+msgid \\"curiosity-graph.tooltipPreviousLabelWeekly\\"
+msgstr \\"\\"
+
+#: src/components/rhelGraphCard/rhelGraphCard.js:61
+msgid \\"curiosity-graph.tooltipSockets\\"
+msgstr \\"\\"
+
+#: src/components/rhelGraphCard/rhelGraphCard.js:62
+msgid \\"curiosity-graph.tooltipSocketsThreshold\\"
+msgstr \\"\\"
+
+#: src/components/rhelGraphCard/rhelGraphCard.js:102
+msgctxt \\"CPU socket usage\\"
+msgid \\"curiosity-graph.heading\\"
+msgstr \\"\\"
+
+#: src/components/rhelGraphCard/rhelGraphCardTypes.js:7
+msgctxt \\"Daily\\"
+msgid \\"curiosity-graph.dropdownDaily\\"
+msgstr \\"\\"
+
+#: src/components/rhelGraphCard/rhelGraphCardTypes.js:9
+msgctxt \\"Monthly\\"
+msgid \\"curiosity-graph.dropdownMonthly\\"
+msgstr \\"\\"
+
+#: src/components/rhelGraphCard/rhelGraphCardTypes.js:10
+msgctxt \\"Quarterly\\"
+msgid \\"curiosity-graph.dropdownQuarterly\\"
+msgstr \\"\\"
+
+#: src/components/rhelGraphCard/rhelGraphCard.js:105
+#: src/components/rhelGraphCard/rhelGraphCard.js:109
+msgctxt \\"Select date range\\"
+msgid \\"curiosity-graph.dropdownPlaceholder\\"
+msgstr \\"\\"
+
+#: src/components/rhelGraphCard/rhelGraphCardTypes.js:8
+msgctxt \\"Weekly\\"
+msgid \\"curiosity-graph.dropdownWeekly\\"
+msgstr \\"\\"
+"
+`;
+
+exports[`I18n Component should have locale keys that exist in the default language JSON: missing locale keys 1`] = `Array []`;
+
 exports[`I18n Component should pass children: children 1`] = `"lorem ipsum"`;
 
 exports[`I18n Component should render a basic component: basic 1`] = `

src/components/i18n/__tests__/i18n.test.js

@@ -1,8 +1,29 @@
 import React from 'react';
 import { mount, shallow } from 'enzyme';
+import _get from 'lodash/get';
+import { GettextExtractor, JsExtractors } from 'gettext-extractor';
 import { I18n, translate } from '../i18n';
+import enLocales from '../../../../public/locales/en-US';
+
+const textExtractor = () => {
+  const extractor = new GettextExtractor();
+  extractor
+    .createJsParser([
+      JsExtractors.callExpression(['t', '[this].t', 'translate'], {
+        arguments: {
+          text: 0,
+          context: 1
+        }
+      })
+    ])
+    .parseFilesGlob('./src/**/!(*.test|*.spec).@(js|jsx)');
+
+  return extractor;
+};
 
 describe('I18n Component', () => {
+  const getText = textExtractor();
+
   it('should render a basic component', () => {
     const props = {
       locale: 'es'
@@ -36,4 +57,23 @@ describe('I18n Component', () => {
       placeholder
     }).toMatchSnapshot('translate');
   });
+
+  it('should generate a predictable pot output snapshot', () => {
+    expect(getText.getPotString()).toMatchSnapshot('pot output');
+  });
+
+  it('should have locale keys that exist in the default language JSON', () => {
+    const messages = (getText.getMessages && getText.getMessages()) || [];
+    const missingKeys = [];
+
+    messages.forEach(value => {
+      const keyCheck = (value && value.text) || '';
+
+      if (keyCheck && !_get(enLocales, keyCheck, null)) {
+        missingKeys.push(keyCheck);
+      }
+    });
+
+    expect(missingKeys).toMatchSnapshot('missing locale keys');
+  });
 });