1 files changed, 188 insertions, 0 deletions
diff --git a/test/psych/test_parser.rb b/test/psych/test_parser.rb
new file mode 100644
index 0000000000..3886994f95
--- /dev/null
+++ b/test/psych/test_parser.rb
@@ -0,0 +1,188 @@
+require 'test/psych/helper'
+
+module Psych
+  class TestParser < TestCase
+    class EventCatcher < Handler
+      attr_reader :calls
+      def initialize
+        @calls = []
+      end
+
+      (Handler.instance_methods(true) -
+       Object.instance_methods).each do |m|
+        class_eval %{
+          def #{m} *args
+            super
+            @calls << [:#{m}, args]
+          end
+        }
+      end
+    end
+
+    def setup
+      super
+      @parser = Psych::Parser.new EventCatcher.new
+    end
+
+    def test_bogus_io
+      o = Object.new
+      def o.read len; self end
+
+      assert_raises(TypeError) do
+        @parser.parse o
+      end
+    end
+
+    def test_parse_io
+      @parser.parse StringIO.new("--- a")
+      assert_called :start_stream
+      assert_called :scalar
+      assert_called :end_stream
+    end
+
+    def test_syntax_error
+      assert_raises(Psych::SyntaxError) do
+        @parser.parse("---\n\"foo\"\n\"bar\"\n")
+      end
+    end
+
+    def test_mapping_end
+      @parser.parse("---\n!!map { key: value }")
+      assert_called :end_mapping
+    end
+
+    def test_mapping_tag
+      @parser.parse("---\n!!map { key: value }")
+      assert_called :start_mapping, ["tag:yaml.org,2002:map", false, Nodes::Mapping::FLOW]
+    end
+
+    def test_mapping_anchor
+      @parser.parse("---\n&A { key: value }")
+      assert_called :start_mapping, ['A', true, Nodes::Mapping::FLOW]
+    end
+
+    def test_mapping_block
+      @parser.parse("---\n  key: value")
+      assert_called :start_mapping, [true, Nodes::Mapping::BLOCK]
+    end
+
+    def test_mapping_start
+      @parser.parse("---\n{ key: value }")
+      assert_called :start_mapping
+      assert_called :start_mapping, [true, Nodes::Mapping::FLOW]
+    end
+
+    def test_sequence_end
+      @parser.parse("---\n&A [1, 2]")
+      assert_called :end_sequence
+    end
+
+    def test_sequence_start_anchor
+      @parser.parse("---\n&A [1, 2]")
+      assert_called :start_sequence, ["A", true, Nodes::Sequence::FLOW]
+    end
+
+    def test_sequence_start_tag
+      @parser.parse("---\n!!seq [1, 2]")
+      assert_called :start_sequence, ["tag:yaml.org,2002:seq", false, Nodes::Sequence::FLOW]
+    end
+
+    def test_sequence_start_flow
+      @parser.parse("---\n[1, 2]")
+      assert_called :start_sequence, [true, Nodes::Sequence::FLOW]
+    end
+
+    def test_sequence_start_block
+      @parser.parse("---\n  - 1\n  - 2")
+      assert_called :start_sequence, [true, Nodes::Sequence::BLOCK]
+    end
+
+    def test_literal_scalar
+      @parser.parse(<<-eoyml)
+%YAML 1.1
+---
+"literal\n\
+        \ttext\n"
+      eoyml
+      assert_called :scalar, ['literal text ', false, true, Nodes::Scalar::DOUBLE_QUOTED]
+    end
+
+    def test_scalar
+      @parser.parse("--- foo\n")
+      assert_called :scalar, ['foo', true, false, Nodes::Scalar::PLAIN]
+    end
+
+    def test_scalar_with_tag
+      @parser.parse("---\n!!str foo\n")
+      assert_called :scalar, ['foo', 'tag:yaml.org,2002:str', false, false, Nodes::Scalar::PLAIN]
+    end
+
+    def test_scalar_with_anchor
+      @parser.parse("---\n&A foo\n")
+      assert_called :scalar, ['foo', 'A', true, false, Nodes::Scalar::PLAIN]
+    end
+
+    def test_scalar_plain_implicit
+      @parser.parse("---\n&A foo\n")
+      assert_called :scalar, ['foo', 'A', true, false, Nodes::Scalar::PLAIN]
+    end
+
+    def test_alias
+      @parser.parse(<<-eoyml)
+%YAML 1.1
+---
+!!seq [
+  !!str "Without properties",
+  &A !!str "Anchored",
+  !!str "Tagged",
+  *A,
+  !!str "",
+]
+      eoyml
+      assert_called :alias, ['A']
+    end
+
+    def test_end_stream
+      @parser.parse("--- foo\n")
+      assert_called :end_stream
+    end
+
+    def test_start_stream
+      @parser.parse("--- foo\n")
+      assert_called :start_stream
+    end
+
+    def test_end_document_implicit
+      @parser.parse("\"foo\"\n")
+      assert_called :end_document, [true]
+    end
+
+    def test_end_document_explicit
+      @parser.parse("\"foo\"\n...")
+      assert_called :end_document, [false]
+    end
+
+    def test_start_document_version
+      @parser.parse("%YAML 1.1\n---\n\"foo\"\n")
+      assert_called :start_document, [[1,1], [], false]
+    end
+
+    def test_start_document_tag
+      @parser.parse("%TAG !yaml! tag:yaml.org,2002\n---\n!yaml!str \"foo\"\n")
+      assert_called :start_document, [[], [['!yaml!', 'tag:yaml.org,2002']], false]
+    end
+
+    def assert_called call, with = nil, parser = @parser
+      if with
+        call = parser.handler.calls.find { |x|
+          x.first == call && x.last.compact == with
+        }
+        assert(call,
+          "#{[call,with].inspect} not in #{parser.handler.calls.inspect}"
+        )
+      else
+        assert parser.handler.calls.any? { |x| x.first == call }
+      end
+    end
+  end
+end