Added functional test for FilterTable::ExceptionCatcher

Signed-off-by: Vasu1105 <vasundhara.jagdale@chef.io>

test/fixtures/profiles/filter_table/controls/filter-table-exception-catcher.rb

@@ -0,0 +1,5 @@
+control 'exception_catcher_test' do
+  describe dummy([{'name' => 'foo'}]) do
+    its('valid?') { should eq '' }
+  end
+end

test/fixtures/profiles/filter_table/libraries/dummy.rb

@@ -0,0 +1,50 @@
+module Dummy
+  class Test
+    attr_reader :filter_data
+
+    def initialize(data)
+      @filter_data = data
+    end
+
+    filter = FilterTable.create
+    filter.register_column(:names, field: 'name')
+    filter.register_column(
+      :tags,
+      field: :tags,
+      # ref: https://github.com/inspec/inspec/blob/master/docs/dev/filtertable-usage.md#lazy-loading
+      lazy: lambda do |row, _criterion, _table|
+        tags = row['tags']
+        if tags.nil?
+          raise(Inspec::Exceptions::ResourceFailed, '`tags` for resource is missing')
+        end
+
+        row[:tags] = tags
+      end
+    )
+    filter.install_filter_methods_on_resource(self, :filter_data)
+  end
+end
+
+class DummyTest < Inspec.resource(1)
+  name 'dummy'
+
+  attr_reader :data
+
+  def initialize(data)
+    @data = data
+  end
+
+  def valid?
+    tags
+  end
+
+  private
+
+  def tags
+    r_data.tags[0]
+  end
+
+  def r_data
+    Dummy::Test.new(data)
+  end
+end

test/functional/filter_table_test.rb

@@ -123,4 +123,15 @@ describe "filtertable functional tests" do
       expect_clean_run(controls)
     end
   end
+
+  describe "if control fails" do
+    it "should show the exact error message" do
+      controls = ["exception_catcher_test"]
+      cmd = "exec " + ft_profile_path + " --controls " + controls.join(" ") + " --no-sudo"
+      run_result = run_result_for_controls(controls)
+      outcome_hash = failed_control_test_outcomes(run_result)
+      _(outcome_hash["exception_catcher_test"]).must_include "`tags` for resource is missing"
+      assert_exit_code 100, run_result
+    end
+  end
 end