1 files changed, 104 insertions, 0 deletions
diff --git a/spec/unit/mixin/template_spec.rb b/spec/unit/mixin/template_spec.rb
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+++ b/spec/unit/mixin/template_spec.rb
@@ -0,0 +1,104 @@
+#
+# Author:: Adam Jacob (<adam@opscode.com>)
+# Copyright:: Copyright (c) 2008 Opscode, Inc.
+# License:: Apache License, Version 2.0
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+require 'spec_helper'
+
+class TinyTemplateClass; include Chef::Mixin::Template; end
+require 'cgi'
+describe Chef::Mixin::Template, "render_template" do
+
+  before :each do
+    @template = TinyTemplateClass.new
+  end
+
+  it "should render the template evaluated in the given context" do
+    @template.render_template("<%= @foo %>", { :foo => "bar" }) do |tmp|
+      tmp.open.read.should == "bar"
+    end
+  end
+
+  it "should provide a node method to access @node" do
+    @template.render_template("<%= node %>",{:node => "tehShizzle"}) do |tmp|
+      tmp.open.read.should == "tehShizzle"
+    end
+  end
+
+  it "should yield the tempfile it renders the template to" do
+    @template.render_template("abcdef", {}) do |tempfile|
+      tempfile.should be_kind_of(Tempfile)
+    end
+  end
+
+  describe "when an exception is raised in the template" do
+    def do_raise
+      @context = {:chef => "cool"}
+      @template.render_template("foo\nbar\nbaz\n<%= this_is_not_defined %>\nquin\nqunx\ndunno", @context) {|r| r}
+    end
+
+    it "should catch and re-raise the exception as a TemplateError" do
+      lambda { do_raise }.should raise_error(Chef::Mixin::Template::TemplateError)
+    end
+
+    it "should raise an error if an attempt is made to access node but it is nil" do
+      lambda {@template.render_template("<%= node %>",{}) {|r| r}}.should raise_error(Chef::Mixin::Template::TemplateError)
+    end
+
+    describe "the raised TemplateError" do
+      before :each do
+        begin
+          do_raise
+        rescue Chef::Mixin::Template::TemplateError => e
+          @exception = e
+        end
+      end
+
+      it "should have the original exception" do
+        @exception.original_exception.should be
+        @exception.original_exception.message.should =~ /undefined local variable or method `this_is_not_defined'/
+      end
+
+      it "should determine the line number of the exception" do
+        @exception.line_number.should == 4
+      end
+
+      it "should provide a source listing of the template around the exception" do
+        @exception.source_listing.should == "  2: bar\n  3: baz\n  4: <%= this_is_not_defined %>\n  5: quin\n  6: qunx"
+      end
+
+      it "should provide the evaluation context of the template" do
+        @exception.context.should == @context
+      end
+
+      it "should defer the message to the original exception" do
+        @exception.message.should =~ /undefined local variable or method `this_is_not_defined'/
+      end
+
+      it "should provide a nice source location" do
+        @exception.source_location.should == "on line #4"
+      end
+
+      it "should create a pretty output for the terminal" do
+        @exception.to_s.should =~ /Chef::Mixin::Template::TemplateError/
+        @exception.to_s.should =~ /undefined local variable or method `this_is_not_defined'/
+        @exception.to_s.should include("  2: bar\n  3: baz\n  4: <%= this_is_not_defined %>\n  5: quin\n  6: qunx")
+        @exception.to_s.should include(@exception.original_exception.backtrace.first)
+      end
+    end
+  end
+end
+