Add CI config validation message on editor

This change adds a validation message similar to the one found in the
blo viewer to validate the CI config as the user modifies it.

app/assets/javascripts/pipeline_editor/components/info/validation_segment.vue

+<script>
+import { GlIcon, GlLink, GlLoadingIcon } from '@gitlab/ui';
+import { __, s__, sprintf } from '~/locale';
+import { CI_CONFIG_STATUS_VALID } from '../../constants';
+import TooltipOnTruncate from '~/vue_shared/components/tooltip_on_truncate.vue';
+
+export const i18n = {
+  learnMore: __('Learn more'),
+  loading: s__('Pipelines|Validating GitLab CI configuration…'),
+  invalid: s__('Pipelines|This GitLab CI configuration is invalid.'),
+  invalidWithReason: s__('Pipelines|This GitLab CI configuration is invalid: %{reason}.'),
+  valid: s__('Pipelines|This GitLab CI configuration is valid.'),
+};
+
+export default {
+  i18n,
+  components: {
+    GlIcon,
+    GlLink,
+    GlLoadingIcon,
+    TooltipOnTruncate,
+  },
+  inject: {
+    ymlHelpPagePath: {
+      default: '',
+    },
+  },
+  props: {
+    ciConfig: {
+      type: Object,
+      required: false,
+      default: () => ({}),
+    },
+    loading: {
+      type: Boolean,
+      required: false,
+      default: false,
+    },
+  },
+  computed: {
+    isValid() {
+      return this.ciConfig?.status === CI_CONFIG_STATUS_VALID;
+    },
+    icon() {
+      if (this.isValid) {
+        return 'check';
+      }
+      return 'warning-solid';
+    },
+    message() {
+      if (this.isValid) {
+        return this.$options.i18n.valid;
+      }
+
+      // Only display first error as a reason
+      const [reason] = this.ciConfig?.errors || [];
+      if (reason) {
+        return sprintf(this.$options.i18n.invalidWithReason, { reason }, false);
+      }
+      return this.$options.i18n.invalid;
+    },
+  },
+};
+</script>
+
+<template>
+  <div>
+    <template v-if="loading">
+      <gl-loading-icon inline />
+      {{ $options.i18n.loading }}
+    </template>
+
+    <span v-else class="gl-display-inline-flex gl-white-space-nowrap gl-max-w-full">
+      <tooltip-on-truncate :title="message" class="gl-text-truncate">
+        <gl-icon :name="icon" /> <span data-testid="validationMsg">{{ message }}</span>
+      </tooltip-on-truncate>
+      <span class="gl-flex-shrink-0 gl-pl-2">
+        <gl-link data-testid="learnMoreLink" :href="ymlHelpPagePath">
+          {{ $options.i18n.learnMore }}
+        </gl-link>
+      </span>
+    </span>
+  </div>
+</template>

app/assets/javascripts/pipeline_editor/index.js

@@ -21,6 +21,7 @@ export const initPipelineEditor = (selector = '#js-pipeline-editor') => {
     newMergeRequestPath,
     lintHelpPagePath,
     projectPath,
+    ymlHelpPagePath,
   } = el?.dataset;
 
   Vue.use(VueApollo);
@@ -34,6 +35,7 @@ export const initPipelineEditor = (selector = '#js-pipeline-editor') => {
     apolloProvider,
     provide: {
       lintHelpPagePath,
+      ymlHelpPagePath,
     },
     render(h) {
       return h(PipelineEditorApp, {

app/assets/javascripts/pipeline_editor/pipeline_editor_app.vue

@@ -9,6 +9,7 @@ import CiLint from './components/lint/ci_lint.vue';
 import CommitForm from './components/commit/commit_form.vue';
 import EditorTab from './components/ui/editor_tab.vue';
 import TextEditor from './components/text_editor.vue';
+import ValidationSegment from './components/info/validation_segment.vue';
 
 import commitCiFileMutation from './graphql/mutations/commit_ci_file.mutation.graphql';
 import getBlobContent from './graphql/queries/blob_content.graphql';
@@ -35,6 +36,7 @@ export default {
     GlTabs,
     PipelineGraph,
     TextEditor,
+    ValidationSegment,
   },
   mixins: [glFeatureFlagsMixin()],
   props: {
@@ -302,6 +304,14 @@ export default {
     <div class="gl-mt-4">
       <gl-loading-icon v-if="isBlobContentLoading" size="lg" class="gl-m-3" />
       <div v-else class="file-editor gl-mb-3">
+        <div class="info-well gl-display-none gl-display-sm-block">
+          <validation-segment
+            class="well-segment"
+            :loading="isCiConfigDataLoading"
+            :ci-config="ciConfigData"
+          />
+        </div>
+
         <gl-tabs>
           <editor-tab :lazy="true" :title="$options.i18n.tabEdit">
             <text-editor

app/views/projects/ci/pipeline_editor/show.html.haml

@@ -6,4 +6,5 @@
   "commit-sha" => @project.commit ? @project.commit.sha : '',
   "new-merge-request-path" => namespace_project_new_merge_request_path,
   "lint-help-page-path" => help_page_path('ci/lint', anchor: 'validate-basic-logic-and-syntax'),
+  "yml-help-page-path" => help_page_path('ci/yaml/README'),
 } }

locale/gitlab.pot

@@ -20698,9 +20698,15 @@ msgstr ""
 msgid "Pipelines|There was an error fetching the pipelines. Try again in a few moments or contact your support team."
 msgstr ""
 
+msgid "Pipelines|This GitLab CI configuration is invalid."
+msgstr ""
+
 msgid "Pipelines|This GitLab CI configuration is invalid:"
 msgstr ""
 
+msgid "Pipelines|This GitLab CI configuration is invalid: %{reason}."
+msgstr ""
+
 msgid "Pipelines|This GitLab CI configuration is valid."
 msgstr ""
 

spec/frontend/pipeline_editor/components/info/validation_segment_spec.js

+import { escape } from 'lodash';
+import { shallowMount } from '@vue/test-utils';
+import { GlIcon } from '@gitlab/ui';
+import { extendedWrapper } from 'jest/helpers/vue_test_utils_helper';
+import { sprintf } from '~/locale';
+import ValidationSegment, { i18n } from '~/pipeline_editor/components/info/validation_segment.vue';
+import { CI_CONFIG_STATUS_INVALID } from '~/pipeline_editor/constants';
+import { mockYmlHelpPagePath, mergeUnwrappedCiConfig } from '../../mock_data';
+
+describe('~/pipeline_editor/components/info/validation_segment.vue', () => {
+  let wrapper;
+
+  const createComponent = (props = {}) => {
+    wrapper = extendedWrapper(
+      shallowMount(ValidationSegment, {
+        provide: {
+          ymlHelpPagePath: mockYmlHelpPagePath,
+        },
+        propsData: {
+          ciConfig: mergeUnwrappedCiConfig(),
+          loading: false,
+          ...props,
+        },
+      }),
+    );
+  };
+
+  const findIcon = () => wrapper.findComponent(GlIcon);
+  const findLearnMoreLink = () => wrapper.findByTestId('learnMoreLink');
+  const findValidationMsg = () => wrapper.findByTestId('validationMsg');
+
+  it('shows the loading state', () => {
+    createComponent({ loading: true });
+
+    expect(wrapper.text()).toBe(i18n.loading);
+  });
+
+  describe('when config is valid', () => {
+    beforeEach(() => {
+      createComponent({});
+    });
+
+    it('has check icon', () => {
+      expect(findIcon().props('name')).toBe('check');
+    });
+
+    it('shows a message for valid state', () => {
+      expect(findValidationMsg().text()).toContain(i18n.valid);
+    });
+
+    it('shows the learn more link', () => {
+      expect(findLearnMoreLink().attributes('href')).toBe(mockYmlHelpPagePath);
+      expect(findLearnMoreLink().text()).toBe(i18n.learnMore);
+    });
+  });
+
+  describe('when config is not valid', () => {
+    beforeEach(() => {
+      createComponent({
+        ciConfig: mergeUnwrappedCiConfig({
+          status: CI_CONFIG_STATUS_INVALID,
+        }),
+      });
+    });
+
+    it('has warning icon', () => {
+      expect(findIcon().props('name')).toBe('warning-solid');
+    });
+
+    it('has message for invalid state', () => {
+      expect(findValidationMsg().text()).toBe(i18n.invalid);
+    });
+
+    it('shows an invalid state with an error', () => {
+      const firstError = 'First Error';
+      const secondError = 'Second Error';
+
+      createComponent({
+        ciConfig: mergeUnwrappedCiConfig({
+          status: CI_CONFIG_STATUS_INVALID,
+          errors: [firstError, secondError],
+        }),
+      });
+
+      // Test the error is shown _and_ the string matches
+      expect(findValidationMsg().text()).toContain(firstError);
+      expect(findValidationMsg().text()).toBe(
+        sprintf(i18n.invalidWithReason, { reason: firstError }),
+      );
+    });
+
+    it('shows an invalid state with an error while preventing XSS', () => {
+      const evilError = '<script>evil();</script>';
+
+      createComponent({
+        ciConfig: mergeUnwrappedCiConfig({
+          status: CI_CONFIG_STATUS_INVALID,
+          errors: [evilError],
+        }),
+      });
+
+      const { innerHTML } = findValidationMsg().element;
+
+      expect(innerHTML).not.toContain(evilError);
+      expect(innerHTML).toContain(escape(evilError));
+    });
+
+    it('shows the learn more link', () => {
+      expect(findLearnMoreLink().attributes('href')).toBe(mockYmlHelpPagePath);
+      expect(findLearnMoreLink().text()).toBe('Learn more');
+    });
+  });
+});

spec/frontend/pipeline_editor/components/lint/ci_lint_spec.js

@@ -2,17 +2,7 @@ import { shallowMount, mount } from '@vue/test-utils';
 import { GlAlert, GlLink } from '@gitlab/ui';
 import CiLint from '~/pipeline_editor/components/lint/ci_lint.vue';
 import { CI_CONFIG_STATUS_INVALID } from '~/pipeline_editor/constants';
-import { mockCiConfigQueryResponse, mockLintHelpPagePath } from '../../mock_data';
-import { unwrapStagesWithNeeds } from '~/pipelines/components/unwrapping_utils';
-
-const getCiConfig = (mergedConfig) => {
-  const { ciConfig } = mockCiConfigQueryResponse.data;
-  return {
-    ...ciConfig,
-    stages: unwrapStagesWithNeeds(ciConfig.stages.nodes),
-    ...mergedConfig,
-  };
-};
+import { mergeUnwrappedCiConfig, mockLintHelpPagePath } from '../../mock_data';
 
 describe('~/pipeline_editor/components/lint/ci_lint.vue', () => {
   let wrapper;
@@ -23,7 +13,7 @@ describe('~/pipeline_editor/components/lint/ci_lint.vue', () => {
         lintHelpPagePath: mockLintHelpPagePath,
       },
       propsData: {
-        ciConfig: getCiConfig(),
+        ciConfig: mergeUnwrappedCiConfig(),
         ...props,
       },
     });
@@ -63,7 +53,7 @@ describe('~/pipeline_editor/components/lint/ci_lint.vue', () => {
     it('displays invalid results', () => {
       createComponent(
         {
-          ciConfig: getCiConfig({
+          ciConfig: mergeUnwrappedCiConfig({
             status: CI_CONFIG_STATUS_INVALID,
           }),
         },

spec/frontend/pipeline_editor/mock_data.js

 import { CI_CONFIG_STATUS_VALID } from '~/pipeline_editor/constants';
+import { unwrapStagesWithNeeds } from '~/pipelines/components/unwrapping_utils';
 
 export const mockNamespace = 'user1';
 export const mockProjectName = 'project1';
@@ -8,6 +9,7 @@ export const mockNewMergeRequestPath = '/-/merge_requests/new';
 export const mockCommitSha = 'aabbccdd';
 export const mockCommitNextSha = 'eeffgghh';
 export const mockLintHelpPagePath = '/-/lint-help';
+export const mockYmlHelpPagePath = '/-/yml-help';
 export const mockCommitMessage = 'My commit message';
 
 export const mockCiConfigPath = '.gitlab-ci.yml';
@@ -111,6 +113,15 @@ export const mockCiConfigQueryResponse = {
   },
 };
 
+export const mergeUnwrappedCiConfig = (mergedConfig) => {
+  const { ciConfig } = mockCiConfigQueryResponse.data;
+  return {
+    ...ciConfig,
+    stages: unwrapStagesWithNeeds(ciConfig.stages.nodes),
+    ...mergedConfig,
+  };
+};
+
 export const mockLintResponse = {
   valid: true,
   errors: [],