1 files changed, 71 insertions, 0 deletions
diff --git a/test/json/json_ext_parser_test.rb b/test/json/json_ext_parser_test.rb
new file mode 100644
index 0000000000..d585b8d0dc
--- /dev/null
+++ b/test/json/json_ext_parser_test.rb
@@ -0,0 +1,71 @@
+# frozen_string_literal: true
+require_relative 'test_helper'
+
+class JSONExtParserTest < Test::Unit::TestCase
+  include JSON
+
+  def test_allocate
+    parser = JSON::Ext::Parser.new("{}")
+    parser.__send__(:initialize, "{}")
+    assert_equal "{}", parser.source
+
+    parser = JSON::Ext::Parser.allocate
+    assert_nil parser.source
+  end
+
+  def test_error_messages
+    ex = assert_raise(ParserError) { parse('Infinity something') }
+    unless RUBY_PLATFORM =~ /java/
+      assert_equal "unexpected token 'Infinity' at line 1 column 1", ex.message
+    end
+
+    ex = assert_raise(ParserError) { parse('foo bar') }
+    unless RUBY_PLATFORM =~ /java/
+      assert_equal "unexpected token 'foo' at line 1 column 1", ex.message
+    end
+
+    ex = assert_raise(ParserError) { parse('-Infinity something') }
+    unless RUBY_PLATFORM =~ /java/
+      assert_equal "invalid number: '-Infinity' at line 1 column 1", ex.message
+    end
+
+    ex = assert_raise(ParserError) { parse('NaN something') }
+    unless RUBY_PLATFORM =~ /java/
+      assert_equal "unexpected token 'NaN' at line 1 column 1", ex.message
+    end
+
+    ex = assert_raise(ParserError) { parse('   ') }
+    unless RUBY_PLATFORM =~ /java/
+      assert_equal "unexpected end of input at line 1 column 4", ex.message
+    end
+
+    ex = assert_raise(ParserError) { parse('{   ') }
+    unless RUBY_PLATFORM =~ /java/
+      assert_equal "expected object key, got EOF at line 1 column 5", ex.message
+    end
+  end
+
+  if GC.respond_to?(:stress=)
+    def test_gc_stress_parser_new
+      payload = JSON.dump([{ foo: 1, bar: 2, baz: 3, egg: { spam: 4 } }] * 10)
+
+      previous_stress = GC.stress
+      JSON::Parser.new(payload).parse
+    ensure
+      GC.stress = previous_stress
+    end
+
+    def test_gc_stress
+      payload = JSON.dump([{ foo: 1, bar: 2, baz: 3, egg: { spam: 4 } }] * 10)
+
+      previous_stress = GC.stress
+      JSON.parse(payload)
+    ensure
+      GC.stress = previous_stress
+    end
+  end
+
+  def parse(json)
+    JSON::Ext::Parser.new(json).parse
+  end
+end