[ruby/rexml] xpath local_name: fix a bug that nil is returned for nonexistent case

It must be an empty string.

https://github.com/ruby/rexml/commit/81bc7cd4f5

1 files changed, 75 insertions, 0 deletions

diff --git a/test/rexml/functions/test_boolean.rb b/test/rexml/functions/test_boolean.rb
new file mode 100644
index 0000000000..b3e2117c10
--- /dev/null
+++ b/test/rexml/functions/test_boolean.rb
@@ -0,0 +1,75 @@
+# frozen_string_literal: false
+
+require "test/unit"
+require "rexml/document"
+require "rexml/functions"
+
+module REXMLTests
+  class TestFunctionsBoolean < Test::Unit::TestCase
+    def setup
+      REXML::Functions.context = nil
+    end
+
+    def test_true
+      assert_equal(true, REXML::Functions.boolean(true))
+    end
+
+    def test_false
+      assert_equal(false, REXML::Functions.boolean(false))
+    end
+
+    def test_integer_true
+      assert_equal(true, REXML::Functions.boolean(1))
+    end
+
+    def test_integer_positive_zero
+      assert_equal(false, REXML::Functions.boolean(0))
+    end
+
+    def test_integer_negative_zero
+      assert_equal(false, REXML::Functions.boolean(-0))
+    end
+
+    def test_float_true
+      assert_equal(true, REXML::Functions.boolean(1.1))
+    end
+
+    def test_float_positive_zero
+      assert_equal(false, REXML::Functions.boolean(-0.0))
+    end
+
+    def test_float_negative_zero
+      assert_equal(false, REXML::Functions.boolean(-0.0))
+    end
+
+    def test_float_nan
+      assert_equal(false, REXML::Functions.boolean(Float::NAN))
+    end
+
+    def test_string_true
+      assert_equal(true, REXML::Functions.boolean("content"))
+    end
+
+    def test_string_empty
+      assert_equal(false, REXML::Functions.boolean(""))
+    end
+
+    def test_node_set_true
+      root = REXML::Document.new("<root/>").root
+      assert_equal(true, REXML::Functions.boolean([root]))
+    end
+
+    def test_node_set_empty
+      assert_equal(false, REXML::Functions.boolean([]))
+    end
+
+    def test_nil
+      assert_equal(false, REXML::Functions.boolean(nil))
+    end
+
+    def test_context
+      REXML::Functions.context = {node: true}
+      assert_equal(true, REXML::Functions.boolean())
+    end
+  end
+end