Test PossiblePrimary isn't candidate for any read pref.

Author: ajdavis

source/server-selection/tests/server_selection/ReplicaSetNoPrimary/read/PossiblePrimary.json

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+{
+ "in_latency_window": [],
+ "operation": "read",
+ "read_preference": {
+ "mode": "Primary",
+ "tag_sets": [
+ {}
+ ]
+ },
+ "suitable_servers": [],
+ "topology_description": {
+ "servers": [
+ {
+ "address": "b:27017",
+ "avg_rtt_ms": 5,
+ "type": "PossiblePrimary"
+ }
+ ],
+ "type": "ReplicaSetNoPrimary"
+ }
+}

source/server-selection/tests/server_selection/ReplicaSetNoPrimary/read/PossiblePrimary.yml

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+# Test that PossiblePrimary isn't candidate for any read preference mode.
+---
+topology_description:
+ type: ReplicaSetNoPrimary
+ servers:
+ - address: b:27017
+ avg_rtt_ms: 5
+ type: PossiblePrimary
+operation: read
+read_preference:
+ mode: Primary
+ tag_sets:
+ - {}
+suitable_servers: []
+in_latency_window: []

source/server-selection/tests/server_selection/ReplicaSetNoPrimary/read/PossiblePrimaryNearest.json

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+{
+ "in_latency_window": [],
+ "operation": "read",
+ "read_preference": {
+ "mode": "Nearest",
+ "tag_sets": [
+ {}
+ ]
+ },
+ "suitable_servers": [],
+ "topology_description": {
+ "servers": [
+ {
+ "address": "b:27017",
+ "avg_rtt_ms": 5,
+ "type": "PossiblePrimary"
+ }
+ ],
+ "type": "ReplicaSetNoPrimary"
+ }
+}

source/server-selection/tests/server_selection/ReplicaSetNoPrimary/read/PossiblePrimaryNearest.yml

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+# Test that PossiblePrimary isn't candidate for any read preference mode.
+---
+topology_description:
+ type: ReplicaSetNoPrimary
+ servers:
+ - address: b:27017
+ avg_rtt_ms: 5
+ type: PossiblePrimary
+operation: read
+read_preference:
+ mode: Nearest
+ tag_sets:
+ - {}
+suitable_servers: []
+in_latency_window: []