Add simple test for one time keys (#3239)

userapi/storage/storage_test.go

@@ -1,6 +1,7 @@
 package storage_test
 
 import (
+	"bytes"
 	"context"
 	"encoding/json"
 	"fmt"
@@ -758,3 +759,53 @@ func TestDeviceKeysStreamIDGeneration(t *testing.T) {
 		}
 	})
 }
+
+func TestOneTimeKeys(t *testing.T) {
+	test.WithAllDatabases(t, func(t *testing.T, dbType test.DBType) {
+		db, clean := mustCreateKeyDatabase(t, dbType)
+		defer clean()
+		userID := "@alice:localhost"
+		deviceID := "alice_device"
+		otk := api.OneTimeKeys{
+			UserID:   userID,
+			DeviceID: deviceID,
+			KeyJSON:  map[string]json.RawMessage{"curve25519:KEY1": []byte(`{"key":"v1"}`)},
+		}
+
+		// Add a one time key to the DB
+		_, err := db.StoreOneTimeKeys(ctx, otk)
+		MustNotError(t, err)
+
+		// Check the count of one time keys is correct
+		count, err := db.OneTimeKeysCount(ctx, userID, deviceID)
+		MustNotError(t, err)
+		if count.KeyCount["curve25519"] != 1 {
+			t.Fatalf("Expected 1 key, got %d", count.KeyCount["curve25519"])
+		}
+
+		// Check the actual key contents are correct
+		keysJSON, err := db.ExistingOneTimeKeys(ctx, userID, deviceID, []string{"curve25519:KEY1"})
+		MustNotError(t, err)
+		keyJSON, err := keysJSON["curve25519:KEY1"].MarshalJSON()
+		MustNotError(t, err)
+		if !bytes.Equal(keyJSON, []byte(`{"key":"v1"}`)) {
+			t.Fatalf("Existing keys do not match expected. Got %v", keysJSON["curve25519:KEY1"])
+		}
+
+		// Claim a one time key from the database. This should remove it from the database.
+		claimedKeys, err := db.ClaimKeys(ctx, map[string]map[string]string{userID: {deviceID: "curve25519"}})
+		MustNotError(t, err)
+
+		// Check the claimed key contents are correct
+		if !reflect.DeepEqual(claimedKeys[0], otk) {
+			t.Fatalf("Expected to claim stored key %v. Got %v", otk, claimedKeys[0])
+		}
+
+		// Check the count of one time keys is now zero
+		count, err = db.OneTimeKeysCount(ctx, userID, deviceID)
+		MustNotError(t, err)
+		if count.KeyCount["curve25519"] != 0 {
+			t.Fatalf("Expected 0 keys, got %d", count.KeyCount["curve25519"])
+		}
+	})
+}