diff -u b/core/modules/migrate/tests/src/Unit/MigrateSqlIdMapTest.php b/core/modules/migrate/tests/src/Unit/MigrateSqlIdMapTest.php
--- b/core/modules/migrate/tests/src/Unit/MigrateSqlIdMapTest.php
+++ b/core/modules/migrate/tests/src/Unit/MigrateSqlIdMapTest.php
@@ -496,57 +496,24 @@
    * Tests the getRowByDestination method.
    */
   public function testGetRowByDestination() {
-    $this->getDatabase([]);
-    $this->sourceIds = [
-      'source_id_property1' => [
-        'type' => 'string',
-      ],
-      'source_id_property2' => [
-        'type' => 'string',
-      ],
-    ];
     $row = [
       'sourceid1' => 'source_id_value_1',
       'sourceid2' => 'source_id_value_2',
-      'source_ids_hash' => $this->getIdMap()->getSourceIDsHash(
-        [
-          'source_id_property1' => 'source_id_value_1',
-          'source_id_property2' => 'source_id_value_2'
-        ]),
+      'source_ids_hash' => $this->getIdMap()->getSourceIDsHash(['source_id_property' => 'source_id_value_1']),
       'destid1' => 'destination_id_value_1',
     ] + $this->idMapDefaults();
     $this->saveMap($row);
     $row = [
       'sourceid1' => 'source_id_value_3',
       'sourceid2' => 'source_id_value_4',
-      'source_ids_hash' => $this->getIdMap()->getSourceIDsHash(
-        [
-          'source_id_property1' => 'source_id_value_3',
-          'source_id_property2' => 'source_id_value_4'
-        ]),
+      'source_ids_hash' => $this->getIdMap()->getSourceIDsHash(['source_id_property' => 'source_id_value_3']),
       'destid1' => 'destination_id_value_2',
-      ] + $this->idMapDefaults();
-    $this->saveMap($row);
-    $expected = [
-        'source_id_property1' . Sql::ID_SUFFIX => 'source_id_value_3',
-        'source_id_property2' . Sql::ID_SUFFIX => 'source_id_value_4',
-        'source_ids_hash' => $this->getIdMap()->getSourceIDsHash(
-          [
-            'source_id_property1' => 'source_id_value_3',
-            'source_id_property2' => 'source_id_value_4'
-          ]),
-        'destination_id_property' . Sql::ID_SUFFIX => 'destination_id_value_2',
     ] + $this->idMapDefaults();
+    $this->saveMap($row);
     $dest_id_values = ['destination_id_property' => $row['destid1']];
     $id_map = $this->getIdMap();
     $result_row = $id_map->getRowByDestination($dest_id_values);
-    // Sort expected_results to the same order as $result_row.
-    foreach ($result_row as $key => $value) {
-      if (isset($expected[$key]) || array_key_exists($key, $expected)) {
-        $expected_results[$key] = $expected[$key];
-      }
-    }
-    $this->assertSame($expected_results, $result_row);
+    $this->assertSame($row, $result_row);
     // This value does not exist.
     $dest_id_values = ['destination_id_property' => 'invalid_destination_id_property'];
     $id_map = $this->getIdMap();
@@ -646,24 +613,57 @@
    * Tests the getRowByDestination method.
    */
   public function testGetRowByDestination() {
+    $this->getDatabase([]);
+    $this->sourceIds = [
+      'source_id_property1' => [
+        'type' => 'string',
+      ],
+      'source_id_property2' => [
+        'type' => 'string',
+      ],
+    ];
     $row = [
       'sourceid1' => 'source_id_value_1',
       'sourceid2' => 'source_id_value_2',
-      'source_ids_hash' => $this->getIdMap()->getSourceIDsHash(['source_id_property' => 'source_id_value_1']),
+      'source_ids_hash' => $this->getIdMap()->getSourceIDsHash(
+        [
+          'source_id_property1' => 'source_id_value_1',
+          'source_id_property2' => 'source_id_value_2'
+        ]),
       'destid1' => 'destination_id_value_1',
     ] + $this->idMapDefaults();
     $this->saveMap($row);
     $row = [
       'sourceid1' => 'source_id_value_3',
       'sourceid2' => 'source_id_value_4',
-      'source_ids_hash' => $this->getIdMap()->getSourceIDsHash(['source_id_property' => 'source_id_value_3']),
+      'source_ids_hash' => $this->getIdMap()->getSourceIDsHash(
+        [
+          'source_id_property1' => 'source_id_value_3',
+          'source_id_property2' => 'source_id_value_4'
+        ]),
       'destid1' => 'destination_id_value_2',
-    ] + $this->idMapDefaults();
+      ] + $this->idMapDefaults();
     $this->saveMap($row);
+    $expected = [
+        'source_id_property1' . Sql::ID_SUFFIX => 'source_id_value_3',
+        'source_id_property2' . Sql::ID_SUFFIX => 'source_id_value_4',
+        'source_ids_hash' => $this->getIdMap()->getSourceIDsHash(
+          [
+            'source_id_property1' => 'source_id_value_3',
+            'source_id_property2' => 'source_id_value_4'
+          ]),
+        'destination_id_property' . Sql::ID_SUFFIX => 'destination_id_value_2',
+    ] + $this->idMapDefaults();
     $dest_id_values = ['destination_id_property' => $row['destid1']];
     $id_map = $this->getIdMap();
     $result_row = $id_map->getRowByDestination($dest_id_values);
-    $this->assertSame($row, $result_row);
+    // Sort expected_results to the same order as $result_row.
+    foreach ($result_row as $key => $value) {
+      if (isset($expected[$key]) || array_key_exists($key, $expected)) {
+        $expected_results[$key] = $expected[$key];
+      }
+    }
+    $this->assertSame($expected_results, $result_row);
     // This value does not exist.
     $dest_id_values = ['destination_id_property' => 'invalid_destination_id_property'];
     $id_map = $this->getIdMap();