New Max Staleness NoKnownServers test, prohibit maxStalenessSeconds=0.

source/max-staleness/tests/ReplicaSetNoPrimary/Incompatible.yml

@@ -1,6 +1,6 @@
-# During server selection,
-# clients (drivers or mongos) MUST raise an error if ``maxStalenessSeconds`` is not zero or null,
-# and any server's ``maxWireVersion`` is less than 5 (`SERVER-23893`_).
+# During server selection, clients (drivers or mongos) MUST raise an error if
+# maxStalenessSeconds is defined and not -1 and any server's ``maxWireVersion``
+# is less than 5 (`SERVER-23893`_).
 ---
 topology_description:
   type: ReplicaSetNoPrimary

source/max-staleness/tests/ReplicaSetNoPrimary/NoKnownServers.json

@@ -0,0 +1,20 @@
+{
+    "error": true,
+    "read_preference": {
+        "maxStalenessSeconds": 1,
+        "mode": "Nearest"
+    },
+    "topology_description": {
+        "servers": [
+            {
+                "address": "a:27017",
+                "type": "Unknown"
+            },
+            {
+                "address": "b:27017",
+                "type": "Unknown"
+            }
+        ],
+        "type": "ReplicaSetNoPrimary"
+    }
+}

source/max-staleness/tests/ReplicaSetNoPrimary/NoKnownServers.yml

@@ -0,0 +1,15 @@
+# maxStalenessSeconds must be at least 90 seconds, even with no known servers.
+---
+topology_description:
+  type: ReplicaSetNoPrimary
+  servers:
+  - &1
+    address: a:27017
+    type: Unknown
+  - &2
+    address: b:27017
+    type: Unknown
+read_preference:
+  mode: Nearest
+  maxStalenessSeconds: 1  # Too small.
+error: true

source/max-staleness/tests/ReplicaSetNoPrimary/ZeroMaxStaleness.json

@@ -0,0 +1,36 @@
+{
+    "error": true,
+    "read_preference": {
+        "maxStalenessSeconds": 0,
+        "mode": "Nearest"
+    },
+    "topology_description": {
+        "servers": [
+            {
+                "address": "a:27017",
+                "avg_rtt_ms": 5,
+                "lastUpdateTime": 0,
+                "lastWrite": {
+                    "lastWriteDate": {
+                        "$numberLong": "2"
+                    }
+                },
+                "maxWireVersion": 5,
+                "type": "RSSecondary"
+            },
+            {
+                "address": "b:27017",
+                "avg_rtt_ms": 5,
+                "lastUpdateTime": 0,
+                "lastWrite": {
+                    "lastWriteDate": {
+                        "$numberLong": "1"
+                    }
+                },
+                "maxWireVersion": 4,
+                "type": "RSSecondary"
+            }
+        ],
+        "type": "ReplicaSetNoPrimary"
+    }
+}

source/max-staleness/tests/ReplicaSetNoPrimary/ZeroMaxStaleness.yml

@@ -0,0 +1,23 @@
+# maxStalenessSeconds=0 is prohibited.
+---
+topology_description:
+  type: ReplicaSetNoPrimary
+  servers:
+  - &1
+    address: a:27017
+    type: RSSecondary
+    avg_rtt_ms: 5
+    lastUpdateTime: 0
+    maxWireVersion: 5
+    lastWrite: {lastWriteDate: {$numberLong: "2"}}
+  - &2
+    address: b:27017
+    type: RSSecondary
+    avg_rtt_ms: 5
+    lastUpdateTime: 0
+    maxWireVersion: 4  # Incompatible.
+    lastWrite: {lastWriteDate: {$numberLong: "1"}}
+read_preference:
+  mode: Nearest
+  maxStalenessSeconds: 0
+error: true

source/max-staleness/tests/ReplicaSetWithPrimary/Incompatible.yml

@@ -1,6 +1,6 @@
-# During server selection,
-# clients (drivers or mongos) MUST raise an error if ``maxStalenessSeconds`` is not zero or null,
-# and any server's ``maxWireVersion`` is less than 5 (`SERVER-23893`_).
+# During server selection, clients (drivers or mongos) MUST raise an error if
+# maxStalenessSeconds is defined and not -1 and any server's ``maxWireVersion``
+# is less than 5 (`SERVER-23893`_).
 ---
 topology_description:
   type: ReplicaSetWithPrimary

source/max-staleness/tests/ReplicaSetWithPrimary/MaxStalenessWithModePrimary.yml

@@ -1,4 +1,4 @@
-# Drivers MUST raise an error if ``maxStalenessSeconds`` is not zero or null
+# Drivers MUST raise an error if maxStalenessSeconds is defined and not -1
 # and the ``mode`` field is 'primary'.
 ---
 topology_description:

source/max-staleness/tests/ReplicaSetWithPrimary/ZeroMaxStaleness.json

@@ -0,0 +1,36 @@
+{
+    "error": true,
+    "read_preference": {
+        "maxStalenessSeconds": 0,
+        "mode": "Nearest"
+    },
+    "topology_description": {
+        "servers": [
+            {
+                "address": "a:27017",
+                "avg_rtt_ms": 5,
+                "lastUpdateTime": 0,
+                "lastWrite": {
+                    "lastWriteDate": {
+                        "$numberLong": "2"
+                    }
+                },
+                "maxWireVersion": 5,
+                "type": "RSPrimary"
+            },
+            {
+                "address": "b:27017",
+                "avg_rtt_ms": 5,
+                "lastUpdateTime": 0,
+                "lastWrite": {
+                    "lastWriteDate": {
+                        "$numberLong": "1"
+                    }
+                },
+                "maxWireVersion": 4,
+                "type": "RSSecondary"
+            }
+        ],
+        "type": "ReplicaSetWithPrimary"
+    }
+}

source/max-staleness/tests/ReplicaSetWithPrimary/ZeroMaxStaleness.yml

@@ -0,0 +1,23 @@
+# maxStalenessSeconds=0 is prohibited.
+---
+topology_description:
+  type: ReplicaSetWithPrimary
+  servers:
+  - &1
+    address: a:27017
+    type: RSPrimary
+    avg_rtt_ms: 5
+    lastUpdateTime: 0
+    maxWireVersion: 5
+    lastWrite: {lastWriteDate: {$numberLong: "2"}}
+  - &2
+    address: b:27017
+    type: RSSecondary
+    avg_rtt_ms: 5
+    lastUpdateTime: 0
+    maxWireVersion: 4  # Incompatible.
+    lastWrite: {lastWriteDate: {$numberLong: "1"}}
+read_preference:
+  mode: Nearest
+  maxStalenessSeconds: 0
+error: true

source/max-staleness/tests/Sharded/Incompatible.yml

@@ -1,6 +1,6 @@
-# During server selection,
-# clients (drivers or mongos) MUST raise an error if ``maxStalenessSeconds`` is not zero or null,
-# and any server's ``maxWireVersion`` is less than 5 (`SERVER-23893`_).
+# During server selection, clients (drivers or mongos) MUST raise an error if
+# maxStalenessSeconds is defined and not -1 and any server's ``maxWireVersion``
+# is less than 5 (`SERVER-23893`_).
 ---
 topology_description:
   type: Sharded

source/max-staleness/tests/Single/Incompatible.yml

@@ -1,6 +1,6 @@
-# During server selection,
-# clients (drivers or mongos) MUST raise an error if ``maxStalenessSeconds`` is not zero or null,
-# and any server's ``maxWireVersion`` is less than 5 (`SERVER-23893`_).
+# During server selection, clients (drivers or mongos) MUST raise an error if
+# maxStalenessSeconds is defined and not -1 and any server's ``maxWireVersion``
+# is less than 5 (`SERVER-23893`_).
 ---
 topology_description:
   type: Single