1 files changed, 85 insertions, 0 deletions
diff --git a/spec/lib/release_highlights/validator_spec.rb b/spec/lib/release_highlights/validator_spec.rb
new file mode 100644
index 00000000000..e68d9145dcd
--- /dev/null
+++ b/spec/lib/release_highlights/validator_spec.rb
@@ -0,0 +1,85 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe ReleaseHighlights::Validator do
+  let(:validator) { described_class.new(file: yaml_path) }
+  let(:yaml_path) { 'spec/fixtures/whats_new/valid.yml' }
+  let(:invalid_yaml_path) { 'spec/fixtures/whats_new/invalid.yml' }
+
+  describe '#valid?' do
+    subject { validator.valid? }
+
+    context 'with a valid file' do
+      it 'passes entries to entry validator and returns true' do
+        expect(ReleaseHighlights::Validator::Entry).to receive(:new).exactly(:twice).and_call_original
+        expect(subject).to be true
+        expect(validator.errors).to be_empty
+      end
+    end
+
+    context 'with invalid file' do
+      let(:yaml_path) { invalid_yaml_path }
+
+      it 'returns false and has errors' do
+        expect(subject).to be false
+        expect(validator.errors).not_to be_empty
+      end
+    end
+  end
+
+  describe '.validate_all!' do
+    subject { described_class.validate_all! }
+
+    before do
+      allow(ReleaseHighlight).to receive(:file_paths).and_return(yaml_paths)
+    end
+
+    context 'with valid files' do
+      let(:yaml_paths) { [yaml_path, yaml_path] }
+
+      it { is_expected.to be true }
+    end
+
+    context 'with an invalid file' do
+      let(:yaml_paths) { [invalid_yaml_path, yaml_path] }
+
+      it { is_expected.to be false }
+    end
+  end
+
+  describe '.error_message' do
+    subject do
+      described_class.validate_all!
+      described_class.error_message
+    end
+
+    before do
+      allow(ReleaseHighlight).to receive(:file_paths).and_return([yaml_path])
+    end
+
+    context 'with a valid file' do
+      it { is_expected.to be_empty }
+    end
+
+    context 'with an invalid file' do
+      let(:yaml_path) { invalid_yaml_path }
+
+      it 'returns a nice error message' do
+        expect(subject).to eq(<<-MESSAGE.strip_heredoc)
+         ---------------------------------------------------------
+         Validation failed for spec/fixtures/whats_new/invalid.yml
+         ---------------------------------------------------------
+         * Packages must be one of ["Core", "Starter", "Premium", "Ultimate"] (line 6)
+
+        MESSAGE
+      end
+    end
+  end
+
+  describe 'when validating all files' do
+    it 'they should have no errors' do
+      expect(described_class.validate_all!).to be_truthy, described_class.error_message
+    end
+  end
+end