Fix message of invalid prefix error

nanoc · Jun 28, 2016 · 7c74c48 · 7c74c48
1 parent b5edd86
commit 7c74c48
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Showing 2 changed files with 9 additions and 3 deletions.
diff --git a/lib/nanoc/base/entities/identifier.rb b/lib/nanoc/base/entities/identifier.rb
@@ -123,7 +123,7 @@ def +(other)
     # @return [Nanoc::Identifier]
     def prefix(string)
       if string !~ /\A\//
-        raise InvalidPrefixError.new(@string)
+        raise InvalidPrefixError.new(string)
       end
       Nanoc::Identifier.new(string.sub(/\/+\z/, '') + @string, type: @type)
     end

diff --git a/spec/nanoc/base/entities/identifier_spec.rb b/spec/nanoc/base/entities/identifier_spec.rb
@@ -244,15 +244,21 @@
       let(:prefix) { 'asdf' }
 
       it 'raises an error' do
-        expect { subject }.to raise_error(Nanoc::Identifier::InvalidPrefixError)
+        expect { subject }.to raise_error(
+          Nanoc::Identifier::InvalidPrefixError,
+          'Invalid prefix (does not start with a slash): "asdf"',
+        )
       end
     end
 
     context 'prefix ending with a slash' do
       let(:prefix) { 'asdf/' }
 
       it 'raises an error' do
-        expect { subject }.to raise_error(Nanoc::Identifier::InvalidPrefixError)
+        expect { subject }.to raise_error(
+          Nanoc::Identifier::InvalidPrefixError,
+          'Invalid prefix (does not start with a slash): "asdf/"',
+        )
       end
     end