1 files changed, 43 insertions, 0 deletions
diff --git a/spec/graphql/types/range_input_type_spec.rb b/spec/graphql/types/range_input_type_spec.rb
new file mode 100644
index 00000000000..aa6fd72cf13
--- /dev/null
+++ b/spec/graphql/types/range_input_type_spec.rb
@@ -0,0 +1,43 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe ::Types::RangeInputType do
+  let(:of_integer) { ::GraphQL::INT_TYPE }
+
+  context 'parameterized on Integer' do
+    let(:type) { described_class[of_integer] }
+
+    it 'accepts start and end' do
+      input = { start: 1, end: 10 }
+      output = { start: 1, end: 10 }
+
+      expect(type.coerce_isolated_input(input)).to eq(output)
+    end
+
+    it 'rejects inverted ranges' do
+      input = { start: 10, end: 1 }
+
+      expect { type.coerce_isolated_input(input) }.to raise_error(Gitlab::Graphql::Errors::ArgumentError)
+    end
+  end
+
+  it 'follows expected subtyping relationships for instances' do
+    context = GraphQL::Query::Context.new(
+      query: OpenStruct.new(schema: nil),
+      values: {},
+      object: nil
+    )
+    instance = described_class[of_integer].new(context: context, defaults_used: [], ruby_kwargs: {})
+
+    expect(instance).to be_a_kind_of(described_class)
+    expect(instance).to be_a_kind_of(described_class[of_integer])
+    expect(instance).not_to be_a_kind_of(described_class[GraphQL::ID_TYPE])
+  end
+
+  it 'follows expected subtyping relationships for classes' do
+    expect(described_class[of_integer]).to be < described_class
+    expect(described_class[of_integer]).not_to be < described_class[GraphQL::ID_TYPE]
+    expect(described_class[of_integer]).not_to be < described_class[of_integer, false]
+  end
+end