test: add spec to validate the dependency_scanning report schema

1 files changed, 19 insertions, 0 deletions

diff --git a/spec/support/matchers/match_schema.rb b/spec/support/matchers/match_schema.rb
new file mode 100644
index 0000000..eef6106
--- /dev/null
+++ b/spec/support/matchers/match_schema.rb
@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+RSpec::Matchers.define :match_schema do |report_type|
+  def schema_for(type)
+    relative_path = "spec/schemas/dist/#{type.gsub('_', '-')}-report-format.json"
+    json = JSON.parse(Pathname.pwd.join(relative_path).read)
+    json.delete('$schema')
+    json
+  end
+
+  match do |actual|
+    !actual.nil? && (@errors = JSON::Validator.fully_validate(schema_for(report_type.to_s), actual.to_h)).empty?
+  end
+
+  failure_message do |response|
+    "didn't match the schema for #{report_type}" \
+    " The validation errors were:\n#{@errors.join("\n")}"
+  end
+end