Copy-paste some specs from previous version

test/test_syntax_checking.rb

@@ -0,0 +1,46 @@
+require 'helper'
+describe Pry do
+
+  [
+    ["p = '", "'"],
+    ["def", "a", "(); end"],
+    ["p = <<FOO", "lots", "and", "lots of", "foo", "FOO"],
+    ["[", ":lets,", "'list',", "[/nested/", "], things ]"],
+    ["abc =~ /hello", "/"],
+    ["pouts(<<HI, 'foo", "bar", "HI", "baz')"],
+  ].each do |foo|
+    it "should not raise an error on broken lines: #{foo.join("\\n")}" do
+      output = StringIO.new
+      redirect_pry_io(InputTester.new(*foo), output) do
+        Pry.start
+      end
+
+      output.string.should.not =~ /SyntaxError/
+    end
+  end
+
+  [
+    ["end"],
+    ["puts )("],
+    ["1 1"],
+    ["puts", ":"],
+    # in this case the syntax error is "expecting ')'".
+    ((defined? RUBY_ENGINE && RUBY_ENGINE == "rbx") ? nil : ["def", "method(1"])
+  ].compact.each do |foo|
+    it "should raise an error on invalid syntax like #{foo.inspect}" do
+      output = StringIO.new
+      redirect_pry_io(InputTester.new(*foo), output) do
+        Pry.start
+      end
+      output.string.should =~ /SyntaxError/
+    end
+  end
+
+  it "should not intefere with syntax errors explicitly raised" do
+    output = StringIO.new
+    redirect_pry_io(InputTester.new(%q{raise SyntaxError, "unexpected $end"}), output) do
+      Pry.start
+    end
+    output.string.should =~ /SyntaxError/
+  end
+end