(Maint) Extract re-usable resource matcher

Checking that catalogs have particular resources is useful. Let's make
it easier. This also adds parameter matching to the resource matcher.

1 files changed, 35 insertions, 0 deletions

diff --git a/spec/lib/matchers/resource.rb b/spec/lib/matchers/resource.rb
new file mode 100644
index 000000000..3964a3e9e
--- /dev/null
+++ b/spec/lib/matchers/resource.rb
@@ -0,0 +1,35 @@
+module Matchers; module Resource
+  extend RSpec::Matchers::DSL
+
+  matcher :have_resource do |expected_resource|
+    @params = {}
+
+    match do |actual_catalog|
+      @mismatch = ""
+      if resource = actual_catalog.resource(expected_resource)
+        matched = true
+        failures = []
+        @params.each do |name, value|
+          if resource[name] != value
+            matched = false
+            failures << "expected #{name} to be '#{value}' but was '#{resource[name]}'"
+          end
+        end
+        @mismatch = failures.join("\n")
+
+        matched
+      else
+        @mismatch = "expected #{@actual.to_dot} to include #{@expected[0]}"
+        false
+      end
+    end
+
+    chain :with_parameter do |name, value|
+      @params[name] = value
+    end
+
+    def failure_message_for_should
+      @mismatch
+    end
+  end
+end; end