Fix tests / code to work with frozen string literals

9 files changed, 11 insertions, 11 deletions

diff --git a/test/drawing/tc_area_series.rb b/test/drawing/tc_area_series.rb
index e7e53269..c9b9a949 100644
--- a/test/drawing/tc_area_series.rb
+++ b/test/drawing/tc_area_series.rb
@@ -63,7 +63,7 @@ class TestAreaSeries < Test::Unit::TestCase
   end
 
   def wrap_with_namespaces(series)
-    '<c:chartSpace xmlns:c="' <<
+    +'<c:chartSpace xmlns:c="' <<
       Axlsx::XML_NS_C <<
       '" xmlns:a="' <<
       Axlsx::XML_NS_A <<
diff --git a/test/drawing/tc_axis.rb b/test/drawing/tc_axis.rb
index ba359fed..59f48d1d 100644
--- a/test/drawing/tc_axis.rb
+++ b/test/drawing/tc_axis.rb
@@ -19,7 +19,7 @@ class TestAxis < Test::Unit::TestCase
   def test_color
     @axis.color = "00FF00"
     @axis.cross_axis = Axlsx::CatAxis.new
-    str = '<?xml version="1.0" encoding="UTF-8"?>'
+    str = +'<?xml version="1.0" encoding="UTF-8"?>'
     str << '<c:chartSpace xmlns:c="' << Axlsx::XML_NS_C << '" xmlns:a="' << Axlsx::XML_NS_A << '">'
     doc = Nokogiri::XML(@axis.to_xml_string(str))
 
@@ -103,7 +103,7 @@ class TestAxis < Test::Unit::TestCase
 
   def test_to_xml_string
     @axis.cross_axis = Axlsx::CatAxis.new
-    str = '<?xml version="1.0" encoding="UTF-8"?>'
+    str = +'<?xml version="1.0" encoding="UTF-8"?>'
     str << '<c:chartSpace xmlns:c="' << Axlsx::XML_NS_C << '" xmlns:a="' << Axlsx::XML_NS_A << '">'
     doc = Nokogiri::XML(@axis.to_xml_string(str))
 
diff --git a/test/drawing/tc_d_lbls.rb b/test/drawing/tc_d_lbls.rb
index 76840a6e..b7d664b4 100644
--- a/test/drawing/tc_d_lbls.rb
+++ b/test/drawing/tc_d_lbls.rb
@@ -46,7 +46,7 @@ class TestDLbls < Test::Unit::TestCase
   end
 
   def test_to_xml_string
-    str = '<?xml version="1.0" encoding="UTF-8"?>'
+    str = +'<?xml version="1.0" encoding="UTF-8"?>'
     str << '<c:chartSpace xmlns:c="' << Axlsx::XML_NS_C << '" xmlns:a="' << Axlsx::XML_NS_A << '" xmlns:r="' << Axlsx::XML_NS_R << '">'
     @d_lbls.to_xml_string(str)
     str << '</c:chartSpace>'
diff --git a/test/drawing/tc_data_source.rb b/test/drawing/tc_data_source.rb
index ea0f1e37..fd500819 100644
--- a/test/drawing/tc_data_source.rb
+++ b/test/drawing/tc_data_source.rb
@@ -14,7 +14,7 @@ class TestNumDataSource < Test::Unit::TestCase
   end
 
   def test_to_xml_string_strLit
-    str = '<?xml version="1.0" encoding="UTF-8"?>'
+    str = +'<?xml version="1.0" encoding="UTF-8"?>'
     str << '<c:chartSpace xmlns:c="' << Axlsx::XML_NS_C << '">'
     str << @data_source.to_xml_string
     doc = Nokogiri::XML(str)
diff --git a/test/drawing/tc_line_series.rb b/test/drawing/tc_line_series.rb
index 893c587f..7223fca3 100644
--- a/test/drawing/tc_line_series.rb
+++ b/test/drawing/tc_line_series.rb
@@ -63,7 +63,7 @@ class TestLineSeries < Test::Unit::TestCase
   end
 
   def wrap_with_namespaces(series)
-    '<c:chartSpace xmlns:c="' <<
+    +'<c:chartSpace xmlns:c="' <<
       Axlsx::XML_NS_C <<
       '" xmlns:a="' <<
       Axlsx::XML_NS_A <<
diff --git a/test/drawing/tc_num_data.rb b/test/drawing/tc_num_data.rb
index e0683984..c794faf8 100644
--- a/test/drawing/tc_num_data.rb
+++ b/test/drawing/tc_num_data.rb
@@ -19,7 +19,7 @@ class TestNumData < Test::Unit::TestCase
   end
 
   def test_to_xml_string
-    str = '<?xml version="1.0" encoding="UTF-8"?>'
+    str = +'<?xml version="1.0" encoding="UTF-8"?>'
     str << '<c:chartSpace xmlns:c="' << Axlsx::XML_NS_C << '">'
     str << @num_data.to_xml_string
     doc = Nokogiri::XML(str)
diff --git a/test/drawing/tc_num_val.rb b/test/drawing/tc_num_val.rb
index e5f3b869..7ad6ace4 100644
--- a/test/drawing/tc_num_val.rb
+++ b/test/drawing/tc_num_val.rb
@@ -18,7 +18,7 @@ class TestNumVal < Test::Unit::TestCase
   end
 
   def test_to_xml_string
-    str = '<?xml version="1.0" encoding="UTF-8"?>'
+    str = +'<?xml version="1.0" encoding="UTF-8"?>'
     str << '<c:chartSpace xmlns:c="' << Axlsx::XML_NS_C << '">'
     str << @num_val.to_xml_string(0)
     doc = Nokogiri::XML(str)
diff --git a/test/drawing/tc_str_data.rb b/test/drawing/tc_str_data.rb
index e8fc0441..f80bf24b 100644
--- a/test/drawing/tc_str_data.rb
+++ b/test/drawing/tc_str_data.rb
@@ -8,7 +8,7 @@ class TestStrData < Test::Unit::TestCase
   end
 
   def test_to_xml_string_strLit
-    str = '<?xml version="1.0" encoding="UTF-8"?>'
+    str = +'<?xml version="1.0" encoding="UTF-8"?>'
     str << '<c:chartSpace xmlns:c="' << Axlsx::XML_NS_C << '">'
     str << @str_data.to_xml_string
     doc = Nokogiri::XML(str)
diff --git a/test/drawing/tc_str_val.rb b/test/drawing/tc_str_val.rb
index dfff771b..c094c450 100644
--- a/test/drawing/tc_str_val.rb
+++ b/test/drawing/tc_str_val.rb
@@ -13,7 +13,7 @@ class TestStrVal < Test::Unit::TestCase
   end
 
   def test_to_xml_string
-    str = '<?xml version="1.0" encoding="UTF-8"?>'
+    str = +'<?xml version="1.0" encoding="UTF-8"?>'
     str << '<c:chartSpace xmlns:c="' << Axlsx::XML_NS_C << '">'
     str << @str_val.to_xml_string(0)
     doc = Nokogiri::XML(str)
@@ -22,7 +22,7 @@ class TestStrVal < Test::Unit::TestCase
   end
 
   def test_to_xml_string_special_characters
-    str = '<?xml version="1.0" encoding="UTF-8"?>'
+    str = +'<?xml version="1.0" encoding="UTF-8"?>'
     str << '<c:chartSpace xmlns:c="' << Axlsx::XML_NS_C << '">'
     str << @str_val_with_special_characters.to_xml_string(0)
     doc = Nokogiri::XML(str)