1 files changed, 71 insertions, 0 deletions
diff --git a/spec/support_specs/graphql/arguments_spec.rb b/spec/support_specs/graphql/arguments_spec.rb
new file mode 100644
index 00000000000..ffb58503a0e
--- /dev/null
+++ b/spec/support_specs/graphql/arguments_spec.rb
@@ -0,0 +1,71 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Graphql::Arguments do
+  it 'returns a blank string if the arguments are blank' do
+    args = described_class.new({})
+
+    expect("#{args}").to be_blank
+  end
+
+  it 'returns a serialized arguments if the arguments are not blank' do
+    units = described_class.new({ temp: :CELSIUS, time: :MINUTES })
+    args = described_class.new({ temp: 180, time: 45, units: units })
+
+    expect("#{args}").to eq('temp: 180, time: 45, units: {temp: CELSIUS, time: MINUTES}')
+  end
+
+  it 'supports merge with +' do
+    lhs = described_class.new({ a: 1, b: 2 })
+    rhs = described_class.new({ b: 3, c: 4 })
+
+    expect(lhs + rhs).to eq({ a: 1, b: 3, c: 4 })
+  end
+
+  it 'supports merge with + and a string' do
+    lhs = described_class.new({ a: 1, b: 2 })
+    rhs = 'x: no'
+
+    expect(lhs + rhs).to eq('a: 1, b: 2, x: no')
+  end
+
+  it 'supports merge with + and a string when empty' do
+    lhs = described_class.new({})
+    rhs = 'x: no'
+
+    expect(lhs + rhs).to eq('x: no')
+  end
+
+  it 'supports merge with + and an empty string' do
+    lhs = described_class.new({ a: 1 })
+    rhs = ''
+
+    expect(lhs + rhs).to eq({ a: 1 })
+  end
+
+  it 'serializes all values correctly' do
+    args = described_class.new({
+      array: [1, 2.5, "foo", nil, true, false, :BAR, { power: :on }],
+      hash: { a: 1, b: 2, c: 3 },
+      int: 42,
+      float: 2.7,
+      string: %q[he said "no"],
+      enum: :OFF,
+      null: nil, # we expect this to be omitted - absence is the same as explicit nullness
+      bool_true: true,
+      bool_false: false,
+      var: ::Graphql::Var.new('x', 'Int')
+    })
+
+    expect(args.to_s).to eq([
+      %q(array: [1,2.5,"foo",null,true,false,BAR,{power: on}]),
+      %q(hash: {a: 1, b: 2, c: 3}),
+      'int: 42, float: 2.7',
+      %q(string: "he said \\"no\\""),
+      'enum: OFF',
+      'boolTrue: true, boolFalse: false',
+      'var: $x'
+    ].join(', '))
+  end
+end