Expose permissions on types in GraphQL

This adds a reusable way to expose permissions for a user to types in
GraphQL.

1 files changed, 27 insertions, 2 deletions

diff --git a/spec/support/matchers/graphql_matchers.rb b/spec/support/matchers/graphql_matchers.rb
index d23cbaf4beb..be6fa4c71a0 100644
--- a/spec/support/matchers/graphql_matchers.rb
+++ b/spec/support/matchers/graphql_matchers.rb
@@ -7,9 +7,24 @@ RSpec::Matchers.define :require_graphql_authorizations do |*expected|
 end
 
 RSpec::Matchers.define :have_graphql_fields do |*expected|
+  def expected_field_names
+    expected.map { |name| GraphqlHelpers.fieldnamerize(name) }
+  end
+
   match do |kls|
-    field_names = expected.map { |name| GraphqlHelpers.fieldnamerize(name) }
-    expect(kls.fields.keys).to contain_exactly(*field_names)
+    expect(kls.fields.keys).to contain_exactly(*expected_field_names)
+  end
+
+  failure_message do |kls|
+    missing = expected_field_names - kls.fields.keys
+    extra = kls.fields.keys - expected_field_names
+
+    message = []
+
+    message << "is missing fields: <#{missing.inspect}>" if missing.any?
+    message << "contained unexpected fields: <#{extra.inspect}>" if extra.any?
+
+    message.join("\n")
   end
 end
 
@@ -44,3 +59,13 @@ RSpec::Matchers.define :have_graphql_resolver do |expected|
     end
   end
 end
+
+RSpec::Matchers.define :expose_permissions_using do |expected|
+  match do |type|
+    permission_field = type.fields['userPermissions']
+
+    expect(permission_field).not_to be_nil
+    expect(permission_field.type).to be_non_null
+    expect(permission_field.type.of_type.graphql_name).to eq(expected.graphql_name)
+  end
+end