Add auto-generated test

Generated with `$ rake 'generate:stdlib_test[PrettyPrint]’` and minor edits.

test/stdlib/PrettyPrint_test.rb

@@ -0,0 +1,111 @@
+require_relative "test_helper"
+require "prettyprint"
+
+class PrettyPrintSingletonTest < Test::Unit::TestCase
+  include TypeAssertions
+
+  library "prettyprint"
+  testing "singleton(::PrettyPrint)"
+
+  def test_format
+    assert_send_type  "(?untyped output, ?::Integer maxwidth, ?::String newline, ?untyped genspace) ?{ (::Integer) -> ::Integer } -> untyped",
+                      PrettyPrint, :format
+  end
+
+  def test_new
+    assert_send_type  "(?untyped output, ?::Integer maxwidth, ?::String newline) ?{ (::Integer) -> untyped } -> ::PrettyPrint",
+                      PrettyPrint, :new
+  end
+
+  def test_singleline_format
+    assert_send_type  "(?untyped output, ?::Integer? maxwidth, ?::String? newline, untyped? genspace) ?{ (::Integer) -> ::Integer } -> untyped",
+                      PrettyPrint, :singleline_format
+  end
+end
+
+class PrettyPrintTest < Test::Unit::TestCase
+  include TypeAssertions
+
+  library "prettyprint"
+  testing "::PrettyPrint"
+
+  def test_initialize
+    assert_send_type  "(?untyped output, ?::Integer maxwidth, ?::String newline) ?{ (::Integer) -> untyped } -> void",
+                      PrettyPrint.new, :initialize
+  end
+
+  def test_output
+    assert_send_type  "() -> untyped",
+                      PrettyPrint.new, :output
+  end
+
+  def test_maxwidth
+    assert_send_type  "() -> ::Integer",
+                      PrettyPrint.new, :maxwidth
+  end
+
+  def test_newline
+    assert_send_type  "() -> ::String",
+                      PrettyPrint.new, :newline
+  end
+
+  def test_genspace
+    assert_send_type  "() -> untyped",
+                      PrettyPrint.new, :genspace
+  end
+
+  def test_indent
+    assert_send_type  "() -> ::Integer",
+                      PrettyPrint.new, :indent
+  end
+
+  def test_group_queue
+    assert_send_type  "() -> ::PrettyPrint::GroupQueue",
+                      PrettyPrint.new, :group_queue
+  end
+
+  def test_current_group
+    assert_send_type  "() -> ::PrettyPrint::Group",
+                      PrettyPrint.new, :current_group
+  end
+
+  def test_break_outmost_groups
+    assert_send_type  "() -> untyped",
+                      PrettyPrint.new, :break_outmost_groups
+  end
+
+  def test_text
+    assert_send_type  "(untyped obj, ?::Integer width) -> untyped",
+                      PrettyPrint.new, :text
+  end
+
+  def test_fill_breakable
+    assert_send_type  "(?::String sep, ?::Integer width) -> untyped",
+                      PrettyPrint.new, :fill_breakable
+  end
+
+  def test_breakable
+    assert_send_type  "(?::String sep, ?::Integer width) -> untyped",
+                      PrettyPrint.new, :breakable
+  end
+
+  def test_group
+    assert_send_type  "(?::Integer indent, ?::String open_obj, ?::String close_obj, ?untyped open_width, ?untyped close_width) { () -> untyped } -> untyped",
+                      PrettyPrint.new, :group
+  end
+
+  def test_group_sub
+    assert_send_type  "() { () -> untyped } -> untyped",
+                      PrettyPrint.new, :group_sub
+  end
+
+  def test_nest
+    assert_send_type  "(untyped indent) { () -> untyped } -> untyped",
+                      PrettyPrint.new, :nest
+  end
+
+  def test_flush
+    assert_send_type  "() -> untyped",
+                      PrettyPrint.new, :flush
+  end
+end