From be05008be9af4f3a2b4c6d3bbd66489dcf31884c Mon Sep 17 00:00:00 2001
From: Yorick Peterse <yorickpeterse@gmail.com>
Date: Tue, 18 Aug 2015 15:15:14 +0200
Subject: [PATCH] Added substring-after() spec for a predicate

---
 .../compiler/calls/substring_after_spec.rb    | 45 ++++++++++++-------
 1 file changed, 28 insertions(+), 17 deletions(-)

diff --git a/spec/oga/xpath/compiler/calls/substring_after_spec.rb b/spec/oga/xpath/compiler/calls/substring_after_spec.rb
index 1fdffb6..8492d90 100644
--- a/spec/oga/xpath/compiler/calls/substring_after_spec.rb
+++ b/spec/oga/xpath/compiler/calls/substring_after_spec.rb
@@ -4,27 +4,38 @@ describe Oga::XPath::Compiler do
   describe 'substring-after() function' do
     before do
       @document = parse('<root><a>-</a><b>a-b-c</b></root>')
+
+      @a1 = @document.children[0].children[0]
     end
 
-    it 'returns the substring of the 1st string after the 2nd string' do
-      evaluate_xpath(@document, 'substring-after("a-b-c", "-")').should == 'b-c'
+    describe 'at the top-level' do
+      it 'returns the substring of the 1st string after the 2nd string' do
+        evaluate_xpath(@document, 'substring-after("a-b-c", "-")').should == 'b-c'
+      end
+
+      it 'returns an empty string if the 2nd string is not present' do
+        evaluate_xpath(@document, 'substring-after("a-b-c", "x")').should == ''
+      end
+
+      it 'returns the substring of the 1st node set after the 2nd string' do
+        evaluate_xpath(@document, 'substring-after(root/b, "-")').should == 'b-c'
+      end
+
+      it 'returns the substring of the 1st node set after the 2nd node set' do
+        evaluate_xpath(@document, 'substring-after(root/b, root/a)')
+          .should == 'b-c'
+      end
+
+      it 'returns an empty string when using two empty strings' do
+        evaluate_xpath(@document, 'substring-after("", "")').should == ''
+      end
     end
 
-    it 'returns an empty string if the 2nd string is not present' do
-      evaluate_xpath(@document, 'substring-after("a-b-c", "x")').should == ''
-    end
-
-    it 'returns the substring of the 1st node set after the 2nd string' do
-      evaluate_xpath(@document, 'substring-after(root/b, "-")').should == 'b-c'
-    end
-
-    it 'returns the substring of the 1st node set after the 2nd node set' do
-      evaluate_xpath(@document, 'substring-after(root/b, root/a)')
-        .should == 'b-c'
-    end
-
-    it 'returns an empty string when using two empty strings' do
-      evaluate_xpath(@document, 'substring-after("", "")').should == ''
+    describe 'in a predicate' do
+      it 'returns a NodeSet containing all matching nodes' do
+        evaluate_xpath(@document, 'root/a[substring-after("foo-bar", "-")]')
+          .should == node_set(@a1)
+      end
     end
   end
 end