Add URI options spec tests for minPoolSize/maxPoolSize of 0

JAVA-4160

Author: jyemin

driver-core/src/test/resources/uri-options/connection-pool-options.json

@@ -2,13 +2,15 @@
   "tests": [
     {
       "description": "Valid connection pool options are parsed correctly",
-      "uri": "mongodb://example.com/?maxIdleTimeMS=50000",
+      "uri": "mongodb://example.com/?maxIdleTimeMS=50000&maxPoolSize=5&minPoolSize=3",
       "valid": true,
       "warning": false,
       "hosts": null,
       "auth": null,
       "options": {
-        "maxIdleTimeMS": 50000
+        "maxIdleTimeMS": 50000,
+        "maxPoolSize": 5,
+        "minPoolSize": 3
       }
     },
     {
@@ -28,6 +30,28 @@
       "hosts": null,
       "auth": null,
       "options": {}
+    },
+    {
+      "description": "maxPoolSize=0 does not error",
+      "uri": "mongodb://example.com/?maxPoolSize=0",
+      "valid": true,
+      "warning": false,
+      "hosts": null,
+      "auth": null,
+      "options": {
+        "maxPoolSize": 0
+      }
+    },
+    {
+      "description": "minPoolSize=0 does not error",
+      "uri": "mongodb://example.com/?minPoolSize=0",
+      "valid": true,
+      "warning": false,
+      "hosts": null,
+      "auth": null,
+      "options": {
+        "minPoolSize": 0
+      }
     }
   ]
 }

driver-core/src/test/unit/com/mongodb/AbstractConnectionStringTest.java

@@ -211,6 +211,12 @@ protected void testValidOptions() {
             } else if (option.getKey().toLowerCase().equals("directconnection")) {
                 Boolean expected = option.getValue().asBoolean().getValue();
                 assertEquals(expected, connectionString.isDirectConnection());
+            } else if (option.getKey().toLowerCase().equals("maxpoolsize")) {
+                Integer expected = option.getValue().asNumber().intValue();
+                assertEquals(expected, connectionString.getMaxConnectionPoolSize());
+            } else if (option.getKey().toLowerCase().equals("minpoolsize")) {
+                Integer expected = option.getValue().asNumber().intValue();
+                assertEquals(expected, connectionString.getMinConnectionPoolSize());
             } else {
                 assertTrue(String.format("Unsupported option '%s' in '%s'", option.getKey(), input), false);
             }