t: test maintenance mode policy

examples/policies/t/apicast-policy-maintenance-mode.t

@@ -0,0 +1,107 @@
+use lib 't';
+use Test::APIcast::Blackbox 'no_plan';
+
+repeat_each(1);
+
+env_to_apicast(
+    'APICAST_POLICY_LOAD_PATH' => "$ENV{PWD}/examples/policies"
+);
+
+run_tests();
+
+__DATA__
+
+=== TEST 1: Use maintenance mode using default values
+Testing 3 things:
+1) Check default status code
+2) Check default response message
+3) Validates upstream doesn't get the request
+
+--- configuration
+{
+  "services": [
+    {
+      "id": 42,
+      "backend_version":  1,
+      "backend_authentication_type": "service_token",
+      "backend_authentication_value": "token-value",
+      "proxy": {
+        "policy_chain": [
+          { "name": "maintenance-mode", "version": "1.0.0" },
+          { "name": "apicast.policy.apicast" }
+        ],
+        "api_backend": "http://test:$TEST_NGINX_SERVER_PORT/",
+        "proxy_rules": [
+          { "pattern": "/", "http_method": "GET", "metric_system_name": "hits", "delta": 2 }
+        ]
+      }
+    }
+  ]
+}
+--- upstream
+  location / {
+    content_by_lua_block {
+      local assert = require('luassert')
+      assert.is_nil(ngx.req.get_uri_args())
+      ngx.say('No response from me');
+    }
+  }
+--- request
+GET /?test
+--- response_body 
+503 Service Unavailable - Maintenance
+--- error_code: 503
+--- no_error_log
+[error]
+
+
+=== TEST 2: Use maintenance mode using custom values
+Testing 3 things:
+1) Check custom status code
+2) Check custom response message
+3) Validates upstream doesn't get request
+
+--- configuration
+{
+  "services": [{
+    "id": 42,
+    "backend_version": 1,
+    "backend_authentication_type": "service_token",
+    "backend_authentication_value": "token-value",
+    "proxy": {
+      "policy_chain": [{
+          "name": "maintenance-mode", "version": "1.0.0"
+          "configuration": {
+            "message": "Be back soon",
+            "status": 501
+          }
+        },
+        {
+          "name": "apicast.policy.apicast"
+        }
+      ],
+      "api_backend": "http://test:$TEST_NGINX_SERVER_PORT/",
+      "proxy_rules": [{
+        "pattern": "/",
+        "http_method": "GET",
+        "metric_system_name": "hits",
+        "delta": 2
+      }]
+    }
+  }]
+}
+--- upstream
+  location / {
+    content_by_lua_block {
+      local assert = require('luassert')
+      assert.is_nil(ngx.req.get_uri_args())
+      ngx.say('No response from me');
+    }
+  }
+--- request
+GET /?test
+--- response_body 
+Be back soon
+--- error_code: 501
+--- no_error_log
+[error]