t: add tests for Logging policy

t/apicast-policy-logging.t

@@ -0,0 +1,134 @@
+use lib 't';
+use Test::APIcast::Blackbox 'no_plan';
+
+# Test::Nginx does not allow to grep access logs, so we redirect them to
+# stderr to be able to use "grep_error_log" by setting APICAST_ACCESS_LOG_FILE
+# on every test.
+$ENV{APICAST_ACCESS_LOG_FILE} = "$Test::Nginx::Util::ErrLogFile";
+
+run_tests();
+
+__DATA__
+
+=== TEST 1: Enables access logs when configured to do so
+--- configuration
+{
+  "services": [
+    {
+      "id": 42,
+      "proxy": {
+        "policy_chain": [
+          {
+            "name": "apicast.policy.logging",
+            "configuration": {
+              "enable_access_logs": true
+            }
+          },
+          {
+            "name": "apicast.policy.upstream",
+            "configuration":
+              {
+                "rules": [ { "regex": "/", "url": "http://echo" } ]
+              }
+          }
+        ]
+      }
+    }
+  ]
+}
+--- upstream
+  location / {
+     content_by_lua_block {
+       ngx.say('yay, api backend');
+     }
+  }
+--- request
+GET /
+--- error_code: 200
+--- grep_error_log eval
+qr/"GET \W+ HTTP\/1.1" 200/
+--- grep_error_log_out
+"GET / HTTP/1.1" 200
+--- no_error_log
+[error]
+
+=== TEST 2: Disables access logs when configured to do so
+--- configuration
+{
+  "services": [
+    {
+      "id": 42,
+      "proxy": {
+        "policy_chain": [
+          {
+            "name": "apicast.policy.logging",
+            "configuration": {
+              "enable_access_logs": false
+            }
+          },
+          {
+            "name": "apicast.policy.upstream",
+            "configuration":
+              {
+                "rules": [ { "regex": "/", "url": "http://echo" } ]
+              }
+          }
+        ]
+      }
+    }
+  ]
+}
+--- upstream
+  location / {
+     content_by_lua_block {
+       ngx.say('yay, api backend');
+     }
+  }
+--- request
+GET /
+--- error_code: 200
+--- grep_error_log eval
+qr/"GET \W+ HTTP\/1.1" 200/
+--- grep_error_log_out
+--- no_error_log
+[error]
+
+=== TEST 3: Enables access logs by default when the policy is included
+--- configuration
+{
+  "services": [
+    {
+      "id": 42,
+      "proxy": {
+        "policy_chain": [
+          {
+            "name": "apicast.policy.logging",
+            "configuration": { }
+          },
+          {
+            "name": "apicast.policy.upstream",
+            "configuration":
+              {
+                "rules": [ { "regex": "/", "url": "http://echo" } ]
+              }
+          }
+        ]
+      }
+    }
+  ]
+}
+--- upstream
+  location / {
+     content_by_lua_block {
+       ngx.say('yay, api backend');
+     }
+  }
+--- request
+GET /
+--- error_code: 200
+--- grep_error_log eval
+qr/"GET \W+ HTTP\/1.1" 200/
+--- grep_error_log_out
+"GET / HTTP/1.1" 200
+--- no_error_log
+[error]