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require 'rubygems/test_case'
require 'rubygems'
class TestGemRequire < Gem::TestCase
def setup
super
assert_raises LoadError do
save_loaded_features do
require 'test_gem_require_a'
end
end
end
def assert_require(path)
assert require(path), "'#{path}' was already required"
end
def test_require_is_not_lazy_with_exact_req
a1 = new_spec "a", "1", {"b" => "= 1"}, "lib/test_gem_require_a.rb"
b1 = new_spec "b", "1", nil, "lib/b/c.rb"
b2 = new_spec "b", "2", nil, "lib/b/c.rb"
install_specs a1, b1, b2
save_loaded_features do
assert_require 'test_gem_require_a'
assert_equal %w(a-1 b-1), loaded_spec_names
assert_equal unresolved_names, []
assert_require "b/c"
assert_equal %w(a-1 b-1), loaded_spec_names
end
end
def test_require_is_lazy_with_inexact_req
a1 = new_spec "a", "1", {"b" => ">= 1"}, "lib/test_gem_require_a.rb"
b1 = new_spec "b", "1", nil, "lib/b/c.rb"
b2 = new_spec "b", "2", nil, "lib/b/c.rb"
install_specs a1, b1, b2
save_loaded_features do
assert_require 'test_gem_require_a'
assert_equal %w(a-1), loaded_spec_names
assert_equal unresolved_names, ["b (>= 1)"]
assert_require "b/c"
assert_equal %w(a-1 b-2), loaded_spec_names
end
end
def test_require_is_not_lazy_with_one_possible
a1 = new_spec "a", "1", {"b" => ">= 1"}, "lib/test_gem_require_a.rb"
b1 = new_spec "b", "1", nil, "lib/b/c.rb"
install_specs a1, b1
save_loaded_features do
assert_require 'test_gem_require_a'
assert_equal %w(a-1 b-1), loaded_spec_names
assert_equal unresolved_names, []
assert_require "b/c"
assert_equal %w(a-1 b-1), loaded_spec_names
end
end
def test_activate_via_require_respects_loaded_files
require 'benchmark' # stdlib
save_loaded_features do
a1 = new_spec "a", "1", {"b" => ">= 1"}, "lib/test_gem_require_a.rb"
b1 = new_spec "b", "1", nil, "lib/benchmark.rb"
b2 = new_spec "b", "2", nil, "lib/benchmark.rb"
install_specs a1, b1, b2
require 'test_gem_require_a'
assert_equal unresolved_names, ["b (>= 1)"]
refute require('benchmark'), "benchmark should have already been loaded"
# We detected that we should activate b-2, so we did so, but
# then original_require decided "I've already got benchmark.rb" loaded.
# This case is fine because our lazy loading is provided exactly
# the same behavior as eager loading would have.
assert_equal %w(a-1 b-2), loaded_spec_names
end
end
def test_already_activated_direct_conflict
save_loaded_features do
a1 = new_spec "a", "1", { "b" => "> 0" }
b1 = new_spec "b", "1", { "c" => ">= 1" }, "lib/ib.rb"
b2 = new_spec "b", "2", { "c" => ">= 2" }, "lib/ib.rb"
c1 = new_spec "c", "1", nil, "lib/d.rb"
c2 = new_spec("c", "2", nil, "lib/d.rb")
install_specs a1, b1, b2, c1, c2
a1.activate
c1.activate
assert_equal %w(a-1 c-1), loaded_spec_names
assert_equal ["b (> 0)"], unresolved_names
assert require("ib")
assert_equal %w(a-1 b-1 c-1), loaded_spec_names
assert_equal [], unresolved_names
end
end
def test_multiple_gems_with_the_same_path
save_loaded_features do
a1 = new_spec "a", "1", { "b" => "> 0", "x" => "> 0" }
b1 = new_spec "b", "1", { "c" => ">= 1" }, "lib/ib.rb"
b2 = new_spec "b", "2", { "c" => ">= 2" }, "lib/ib.rb"
x1 = new_spec "x", "1", nil, "lib/ib.rb"
x2 = new_spec "x", "2", nil, "lib/ib.rb"
c1 = new_spec "c", "1", nil, "lib/d.rb"
c2 = new_spec("c", "2", nil, "lib/d.rb")
install_specs a1, b1, b2, c1, c2, x1, x2
a1.activate
c1.activate
assert_equal %w(a-1 c-1), loaded_spec_names
assert_equal ["b (> 0)", "x (> 0)"], unresolved_names
e = assert_raises(Gem::LoadError) do
require("ib")
end
assert_equal "ib found in multiple gems: b, x", e.message
end
end
def test_unable_to_find_good_unresolved_version
save_loaded_features do
a1 = new_spec "a", "1", { "b" => "> 0" }
b1 = new_spec "b", "1", { "c" => ">= 2" }, "lib/ib.rb"
b2 = new_spec "b", "2", { "c" => ">= 3" }, "lib/ib.rb"
c1 = new_spec "c", "1", nil, "lib/d.rb"
c2 = new_spec "c", "2", nil, "lib/d.rb"
c3 = new_spec "c", "3", nil, "lib/d.rb"
install_specs a1, b1, b2, c1, c2, c3
a1.activate
c1.activate
assert_equal %w(a-1 c-1), loaded_spec_names
assert_equal ["b (> 0)"], unresolved_names
e = assert_raises(Gem::LoadError) do
require("ib")
end
assert_equal "unable to find a version of 'b' to activate", e.message
end
end
def test_default_gem_only
save_loaded_features do
default_gem_spec = new_default_spec("default", "2.0.0.0",
nil, "default/gem.rb")
install_default_specs(default_gem_spec)
assert_require "default/gem"
assert_equal %w(default-2.0.0.0), loaded_spec_names
end
end
def test_default_gem_and_normal_gem
save_loaded_features do
default_gem_spec = new_default_spec("default", "2.0.0.0",
nil, "default/gem.rb")
install_default_specs(default_gem_spec)
normal_gem_spec = new_spec("default", "3.0", nil,
"lib/default/gem.rb")
install_specs(normal_gem_spec)
assert_require "default/gem"
assert_equal %w(default-3.0), loaded_spec_names
end
end
def loaded_spec_names
Gem.loaded_specs.values.map(&:full_name).sort
end
def unresolved_names
Gem::Specification.unresolved_deps.values.map(&:to_s).sort
end
def save_loaded_features
old_loaded_features = $LOADED_FEATURES.dup
yield
ensure
$LOADED_FEATURES.replace old_loaded_features
end
end
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