Implement recover

1 files changed, 20 insertions, 1 deletions

diff --git a/spec/parcom_spec.cr b/spec/parcom_spec.cr
index c395636..d9af3b9 100644
--- a/spec/parcom_spec.cr
+++ b/spec/parcom_spec.cr
@@ -336,7 +336,26 @@ describe Phrase do
   end
 end
 
-pending Recover do
+describe Recover do
+  p = Recover.new(Token.new('t'), '@')
+
+  describe "#parse" do
+    it "succeeds and returns the wrapped parser's value if it succeeds" do
+      tokens = TokenStream.from_string("testing")
+      result = p.parse(tokens)
+
+      result.tokens.should eq(tokens[1..])
+      result.value.should eq('t')
+    end
+
+    it "succeeds and returns the default value without modifying the input of the wrapped parser fails" do
+      tokens = TokenStream.from_string("_____")
+      result = p.parse(tokens)
+
+      result.tokens.should eq(tokens)
+      result.value.should eq('@')
+    end
+  end
 end
 
 pending Optional do