Skip pygments tests if pygmentize isn't available

lib/linguist/lexer.rb

@@ -8,6 +8,16 @@ module Linguist
     @name_index  = {}
     @alias_index = {}
 
+    # Internal: Test if system has Pygments
+    #
+    # Only used in tests to disable tests that require Pygments.
+    #
+    # Returns true if `pygmentize` in is PATH otherwise false.
+    def self.has_pygments?
+      `which #{Albino.bin}`
+      $?.success?
+    end
+
     # Public: Get all Lexers
     #
     # Returns an Array of Lexers

test/test_blob.rb

@@ -289,19 +289,21 @@ class TestBlob < Test::Unit::TestCase
     assert_equal nil, blob("foo.rb").shebang_language
   end
 
-  def test_colorize
+  if Lexer.has_pygments?
-    assert_equal <<-HTML, blob("foo.rb").colorize
+    def test_colorize
+      assert_equal <<-HTML, blob("foo.rb").colorize
 <div class="highlight"><pre><span class="k">module</span> <span class="nn">Foo</span>
 <span class="k">end</span>
 </pre>
 </div>
-    HTML
+      HTML
-  end
+    end
 
-  def test_colorize_without_wrapper
+    def test_colorize_without_wrapper
-    assert_equal <<-HTML, blob("foo.rb").colorize_without_wrapper
+      assert_equal <<-HTML, blob("foo.rb").colorize_without_wrapper
 <span class="k">module</span> <span class="nn">Foo</span>
 <span class="k">end</span>
-    HTML
+      HTML
+    end
   end
 end

test/test_language.rb

@@ -337,31 +337,33 @@ class TestLanguage < Test::Unit::TestCase
     assert !Language['SQL'].searchable?
   end
 
-  def test_colorize
+  if Lexer.has_pygments?
-    assert_equal <<-HTML, Language['Text'].colorize("Hello")
+    def test_colorize
+      assert_equal <<-HTML, Language['Text'].colorize("Hello")
 <div class="highlight"><pre>Hello
 </pre>
 </div>
-    HTML
+      HTML
 
-    assert_equal <<-HTML, Language['Ruby'].colorize("def foo\n  'foo'\nend\n")
+      assert_equal <<-HTML, Language['Ruby'].colorize("def foo\n  'foo'\nend\n")
 <div class="highlight"><pre><span class="k">def</span> <span class="nf">foo</span>
   <span class="s1">&#39;foo&#39;</span>
 <span class="k">end</span>
 </pre>
 </div>
-    HTML
+      HTML
-  end
+    end
 
-  def test_colorize_without_wrapper
+    def test_colorize_without_wrapper
-    assert_equal <<-HTML, Language['Text'].colorize_without_wrapper("Hello")
+      assert_equal <<-HTML, Language['Text'].colorize_without_wrapper("Hello")
 Hello
-    HTML
+      HTML
 
-    assert_equal <<-HTML, Language['Ruby'].colorize_without_wrapper("def foo\n  'foo'\nend\n")
+      assert_equal <<-HTML, Language['Ruby'].colorize_without_wrapper("def foo\n  'foo'\nend\n")
 <span class="k">def</span> <span class="nf">foo</span>
   <span class="s1">&#39;foo&#39;</span>
 <span class="k">end</span>
-    HTML
+      HTML
+    end
   end
 end

test/test_lexer.rb

@@ -50,31 +50,33 @@ class TestLexer < Test::Unit::TestCase
     assert !Lexer['Ruby'].eql?(Lexer.new('Ruby'))
   end
 
-  def test_colorize
+  if Lexer.has_pygments?
-    assert_equal <<-HTML, Lexer['Text only'].colorize("Hello")
+    def test_colorize
+      assert_equal <<-HTML, Lexer['Text only'].colorize("Hello")
 <div class="highlight"><pre>Hello
 </pre>
 </div>
-    HTML
+      HTML
 
-    assert_equal <<-HTML, Lexer['Ruby'].colorize("def foo\n  'foo'\nend\n")
+      assert_equal <<-HTML, Lexer['Ruby'].colorize("def foo\n  'foo'\nend\n")
 <div class="highlight"><pre><span class="k">def</span> <span class="nf">foo</span>
   <span class="s1">&#39;foo&#39;</span>
 <span class="k">end</span>
 </pre>
 </div>
-    HTML
+      HTML
-  end
+    end
 
-  def test_colorize_without_wrapper
+    def test_colorize_without_wrapper
-    assert_equal <<-HTML, Lexer['Text only'].colorize_without_wrapper("Hello")
+      assert_equal <<-HTML, Lexer['Text only'].colorize_without_wrapper("Hello")
 Hello
-    HTML
+      HTML
 
-    assert_equal <<-HTML, Lexer['Ruby'].colorize_without_wrapper("def foo\n  'foo'\nend\n")
+      assert_equal <<-HTML, Lexer['Ruby'].colorize_without_wrapper("def foo\n  'foo'\nend\n")
 <span class="k">def</span> <span class="nf">foo</span>
   <span class="s1">&#39;foo&#39;</span>
 <span class="k">end</span>
-    HTML
+      HTML
+    end
   end
 end