Contents

# frozen_string_literal: true

require "gir_ffi_test_helper"

describe GLib::HashTable do
  it "knows its key and value types" do
    hsh = GLib::HashTable.new :gint32, :utf8
    assert_equal :gint32, hsh.key_type
    assert_equal :utf8, hsh.value_type
  end

  describe "::from" do
    it "creates a GHashTable from a Ruby hash" do
      hsh = GLib::HashTable.from [:utf8, :gint32],
                                 "foo" => 23, "bar" => 32
      assert_equal({ "foo" => 23, "bar" => 32 }, hsh.to_hash)
    end

    it "return its argument if given a GHashTable" do
      hsh = GLib::HashTable.from [:utf8, :gint32], "foo" => 23, "bar" => 32
      hsh2 = GLib::HashTable.from [:utf8, :gint32], hsh
      assert hsh2.equal? hsh
    end

    it "wraps its argument if given a pointer" do
      hsh = GLib::HashTable.from [:utf8, :gint32], "foo" => 23, "bar" => 32
      pointer = hsh.to_ptr
      assert_instance_of FFI::Pointer, pointer
      hsh2 = GLib::HashTable.from [:utf8, :gint32], pointer
      assert_instance_of GLib::HashTable, hsh2
      refute hsh2.equal? hsh
      _(hsh2.to_hash).must_equal hsh.to_hash
    end
  end

  it "allows key-value pairs to be inserted" do
    h = GLib::HashTable.new :utf8, :utf8
    h.insert "foo", "bar"
    _(h.to_hash).must_equal "foo" => "bar"
  end

  it "includes Enumerable" do
    _(GLib::HashTable).must_include Enumerable
  end

  describe "a HashTable provided by the system" do
    before do
      GirFFI.setup :Regress
      @hash = Regress.test_ghash_container_return
    end

    it "has a working #each method" do
      a = {}
      @hash.each { |k, v| a[k] = v }
      _(a).must_be :==,
                   "foo" => "bar",
                   "baz" => "bat",
                   "qux" => "quux"
    end

    it "has a working #to_hash method" do
      _(@hash.to_hash).must_be :==,
                               "foo" => "bar",
                               "baz" => "bat",
                               "qux" => "quux"
    end
  end
end

Version data entries

4 entries across 4 versions & 1 rubygems

Version	Path
gir_ffi-0.15.3	test/ffi-glib/hash_table_test.rb
gir_ffi-0.15.2	test/ffi-glib/hash_table_test.rb
gir_ffi-0.15.1	test/ffi-glib/hash_table_test.rb
gir_ffi-0.15.0	test/ffi-glib/hash_table_test.rb