Backport racc-1.4.15 from upstream.

1 files changed, 51 insertions, 0 deletions

diff --git a/test/racc/test_scan_y.rb b/test/racc/test_scan_y.rb
new file mode 100644
index 0000000000..b5f9593654
--- /dev/null
+++ b/test/racc/test_scan_y.rb
@@ -0,0 +1,51 @@
+require File.expand_path(File.join(File.dirname(__FILE__), 'helper'))
+
+module Racc
+  class TestScanY < TestCase
+    def setup
+      file = File.join(ASSET_DIR, 'scan.y')
+      @debug_flags = Racc::DebugFlags.parse_option_string('o')
+      parser = Racc::GrammarFileParser.new(@debug_flags)
+      @result = parser.parse(File.read(file), File.basename(file))
+      @states = Racc::States.new(@result.grammar).nfa
+      @states.dfa
+    end
+
+    def test_compile
+      generator = Racc::ParserFileGenerator.new(@states, @result.params.dup)
+
+      # it generates valid ruby
+      assert Module.new {
+        self.class_eval(generator.generate_parser)
+      }
+
+      grammar = @states.grammar
+
+      assert_equal 0, @states.n_srconflicts
+      assert_equal 0, @states.n_rrconflicts
+      assert_equal 0, grammar.n_useless_nonterminals
+      assert_equal 0, grammar.n_useless_rules
+      assert_nil grammar.n_expected_srconflicts
+    end
+
+    def test_compile_line_convert
+      params = @result.params.dup
+      params.convert_line_all = true
+
+      generator = Racc::ParserFileGenerator.new(@states, @result.params.dup)
+
+      # it generates valid ruby
+      assert Module.new {
+        self.class_eval(generator.generate_parser)
+      }
+
+      grammar = @states.grammar
+
+      assert_equal 0, @states.n_srconflicts
+      assert_equal 0, @states.n_rrconflicts
+      assert_equal 0, grammar.n_useless_nonterminals
+      assert_equal 0, grammar.n_useless_rules
+      assert_nil grammar.n_expected_srconflicts
+    end
+  end
+end