t: add tests for the conditional policy

t/apicast-policy-conditional.t

@@ -0,0 +1,87 @@
+use lib 't';
+use Test::APIcast::Blackbox 'no_plan';
+
+run_tests();
+
+__DATA__
+
+=== TEST 1: Conditional policy calls its chain when the condition is true
+In order to test this, we define a conditional policy that only runs the
+phase_logger policy when the request path is /log.
+We know that the policy outputs "running phase: some_phase" for each of the
+phases it runs, so we can use that to verify it was executed.
+--- configuration
+{
+  "services": [
+    {
+      "id": 42,
+      "proxy": {
+        "policy_chain": [
+          {
+            "name": "apicast.policy.conditional",
+            "configuration": {
+              "condition": "request_path == \"/log\"",
+              "policy_chain": [
+                {
+                  "name": "apicast.policy.phase_logger"
+                }
+              ]
+            }
+          },
+          {
+            "name": "apicast.policy.echo"
+          }
+        ]
+      }
+    }
+  ]
+}
+--- request
+GET /log
+--- response_body
+GET /log HTTP/1.1
+--- error_code: 200
+--- no_error_log
+[error]
+--- error_log chomp
+running phase: rewrite
+
+=== TEST 2: Conditional policy does not call its chain when the condition is false
+In order to test this, we define a conditional policy that only runs the
+phase_logger policy when the request path is /log.
+We know that the policy outputs "running phase: some_phase" for each of the
+phases it runs, so we can use that to verify that it was not executed.
+--- configuration
+{
+  "services": [
+    {
+      "id": 42,
+      "proxy": {
+        "policy_chain": [
+          {
+            "name": "apicast.policy.conditional",
+            "configuration": {
+              "condition": "request_path == \"/log\"",
+              "policy_chain": [
+                {
+                  "name": "apicast.policy.phase_logger"
+                }
+              ]
+            }
+          },
+          {
+            "name": "apicast.policy.echo"
+          }
+        ]
+      }
+    }
+  ]
+}
+--- request
+GET /
+--- response_body
+GET / HTTP/1.1
+--- error_code: 200
+--- no_error_log
+[error]
+running phase: rewrite