test_missing_methods.rb

# frozen_string_literal: true

require_relative 'helper'

# Test method_missing, respond_to? and respond_to_missing behaviour
class TestMissingMethods < MiniTest::Test
  def test_missing
    stub_core_api_list
    client = Kubeclient::Client.new('http://localhost:8080/api/', 'v1')
    assert_equal(true, client.respond_to?(:get_pod))
    assert_equal(true, client.respond_to?(:get_pods))
    assert_equal(false, client.respond_to?(:get_pie))
    client = Kubeclient::Client.new('http://localhost:8080/api/', 'v1') # Reset discovery
    assert_equal(false, client.respond_to?(:get_pie))
    assert_equal(true, client.respond_to?(:get_pods))
    assert_equal(true, client.respond_to?(:get_pod))
    client = Kubeclient::Client.new('http://localhost:8080/api/', 'v1') # Reset discovery
    assert_instance_of(Method, client.method(:get_pods))
    assert_raises(NameError) do
      client.method(:get_pies)
    end
    client = Kubeclient::Client.new('http://localhost:8080/api/', 'v1') # Reset discovery
    assert_raises(NameError) do
      client.method(:get_pies)
    end
    assert_instance_of(Method, client.method(:get_pods))

    stub_request(:get, %r{/api/v1$}).to_return(
      body: '',
      status: 404
    ) # If discovery fails we expect the below raise an exception
    client = Kubeclient::Client.new('http://localhost:8080/api/', 'v1')
    assert_raises(Kubeclient::HttpError) do
      client.discover
    end
    client = Kubeclient::Client.new('http://localhost:8080/api/', 'v1')
    assert_raises(Kubeclient::HttpError) do
      client.method(:get_pods)
    end
    client = Kubeclient::Client.new('http://localhost:8080/api/', 'v1')
    assert_raises(Kubeclient::HttpError) do
      client.respond_to?(:get_pods)
    end
  end

  def test_nonsuffix_plurals
    stub_request(:get, %r{/apis/extensions/v1beta1$}).to_return(
      body: open_test_file('extensions_v1beta1_api_resource_list.json'),
      status: 200
    )
    client = Kubeclient::Client.new('http://localhost:8080/apis/extensions', 'v1beta1')
    assert_equal(true, client.respond_to?(:get_network_policy))
    assert_equal(true, client.respond_to?(:get_network_policies))
    assert_equal(true, client.respond_to?(:get_pod_security_policy))
    assert_equal(true, client.respond_to?(:get_pod_security_policies))
  end

  def test_irregular_names
    stub_core_api_list
    client = Kubeclient::Client.new('http://localhost:8080/api/', 'v1')
    assert_equal(true, client.respond_to?(:get_endpoint))
    assert_equal(true, client.respond_to?(:get_endpoints))

    stub_request(:get, %r{/apis/security.openshift.io/v1$}).to_return(
      body: open_test_file('security.openshift.io_api_resource_list.json'),
      status: 200
    )
    client = Kubeclient::Client.new('http://localhost:8080/apis/security.openshift.io', 'v1')
    assert_equal(true, client.respond_to?(:get_security_context_constraint))
    assert_equal(true, client.respond_to?(:get_security_context_constraints))
  end

  def test_lowercase_kind
    stub_request(:get, %r{/apis/config.istio.io/v1alpha2$}).to_return(
      body: open_test_file('config.istio.io_api_resource_list.json'),
      status: 200
    )
    client = Kubeclient::Client.new('http://localhost:8080/apis/config.istio.io', 'v1alpha2')
    assert_equal(true, client.respond_to?(:get_servicecontrolreport))
    assert_equal(true, client.respond_to?(:get_servicecontrolreports))
  end
end