first commit

packages/nodes-base/nodes/MySql/test/v1/GenericFunctions.test.ts

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+/* eslint-disable n8n-nodes-base/node-param-display-name-miscased */
+import mysql2 from 'mysql2/promise';
+import type { ILoadOptionsFunctions, INodeListSearchResult } from 'n8n-workflow';
+
+import { searchTables } from '../../v1/GenericFunctions';
+
+jest.mock('mysql2/promise');
+
+describe('MySQL / v1 / Generic Functions', () => {
+	let mockLoadOptionsFunctions: ILoadOptionsFunctions;
+
+	beforeEach(() => {
+		jest.resetAllMocks();
+
+		mockLoadOptionsFunctions = {
+			getCredentials: jest.fn().mockResolvedValue({
+				database: 'test_db',
+			}),
+		} as unknown as ILoadOptionsFunctions;
+	});
+
+	describe('searchTables', () => {
+		it('should return matching tables', async () => {
+			const mockRows = [{ table_name: 'users' }, { table_name: 'products' }];
+
+			const mockQuery = jest.fn().mockResolvedValue([mockRows]);
+			const mockEnd = jest.fn().mockResolvedValue(undefined);
+
+			(mysql2.createConnection as jest.Mock).mockResolvedValue({
+				query: mockQuery,
+				end: mockEnd,
+			});
+
+			const result: INodeListSearchResult = await searchTables.call(
+				mockLoadOptionsFunctions,
+				'user',
+			);
+
+			expect(result).toEqual({
+				results: [
+					{ name: 'users', value: 'users' },
+					{ name: 'products', value: 'products' },
+				],
+			});
+
+			expect(mockQuery).toHaveBeenCalledWith(
+				`SELECT table_name
+FROM   information_schema.tables
+WHERE  table_schema = ?
+AND table_name LIKE ?
+ORDER  BY table_name`,
+				['test_db', '%user%'],
+			);
+
+			expect(mockEnd).toHaveBeenCalled();
+		});
+
+		it('should handle empty search query', async () => {
+			const mockRows: any[] = [];
+
+			const mockQuery = jest.fn().mockResolvedValue([mockRows]);
+			const mockEnd = jest.fn().mockResolvedValue(undefined);
+
+			(mysql2.createConnection as jest.Mock).mockResolvedValue({
+				query: mockQuery,
+				end: mockEnd,
+			});
+
+			const result = await searchTables.call(mockLoadOptionsFunctions);
+
+			expect(result).toEqual({ results: [] });
+			expect(mockQuery).toHaveBeenCalledWith(
+				`SELECT table_name
+FROM   information_schema.tables
+WHERE  table_schema = ?
+AND table_name LIKE ?
+ORDER  BY table_name`,
+				['test_db', '%%'],
+			);
+
+			expect(mockEnd).toHaveBeenCalled();
+		});
+
+		it('should handle database errors', async () => {
+			const mockError = new Error('Database connection failed');
+
+			(mysql2.createConnection as jest.Mock).mockRejectedValue(mockError);
+
+			await expect(searchTables.call(mockLoadOptionsFunctions)).rejects.toThrow(
+				'Database connection failed',
+			);
+		});
+	});
+});

packages/nodes-base/nodes/MySql/test/v1/executeQuery.test.ts

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+import { NodeTestHarness } from '@nodes-testing/node-test-harness';
+import { mock } from 'jest-mock-extended';
+import type { Connection, QueryResult } from 'mysql2/promise';
+
+const mockConnection = mock<Connection>();
+const createConnection = jest.fn().mockReturnValue(mockConnection);
+jest.mock('mysql2/promise', () => ({ createConnection }));
+
+describe('Test MySqlV1, executeQuery', () => {
+	mockConnection.query.mockResolvedValue([{ success: true } as unknown as QueryResult, []]);
+
+	new NodeTestHarness().setupTests({
+		workflowFiles: ['executeQuery.workflow.json'],
+		customAssertions() {
+			expect(mockConnection.query).toHaveBeenCalledTimes(1);
+			expect(mockConnection.query).toHaveBeenCalledWith(
+				"select * from family_parents where (parent_email = 'parent1@mail.com' or parent_email = 'parent2@mail.com') and parent_email <> '';",
+			);
+		},
+	});
+});

packages/nodes-base/nodes/MySql/test/v1/executeQuery.workflow.json

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+{
+  "name": "mysql v1 resolve expression copy",
+  "nodes": [
+    {
+      "parameters": {},
+      "id": "d6d9fbcc-d8bc-4f79-8e00-3acf8ffb12de",
+      "name": "When clicking \"Execute Workflow\"",
+      "type": "n8n-nodes-base.manualTrigger",
+      "typeVersion": 1,
+      "position": [
+        460,
+        460
+      ]
+    },
+    {
+      "parameters": {
+        "operation": "executeQuery",
+        "query": "select * from family_parents where (parent_email = {{ \"'\" + $json['Parent 1 email'] + \"'\" }} or parent_email = {{ \"'\" + $json['Parent 2 email'] + \"'\"}}) and parent_email <> '';\n"
+      },
+      "id": "faefc24c-91b4-4b10-85a6-b3cecbceee08",
+      "name": "Get matching families",
+      "type": "n8n-nodes-base.mySql",
+      "typeVersion": 1,
+      "position": [
+        900,
+        460
+      ],
+      "credentials": {
+        "mySql": {
+          "id": "93",
+          "name": "MySQL account"
+        }
+      }
+    },
+    {
+      "parameters": {},
+      "id": "29c30f6e-9f5f-4b3a-80c4-2da762e96bd9",
+      "name": "No Operation, do nothing1",
+      "type": "n8n-nodes-base.noOp",
+      "typeVersion": 1,
+      "position": [
+        1120,
+        460
+      ]
+    },
+    {
+      "parameters": {
+        "fields": {
+          "values": [
+            {
+              "name": "Parent 1 email",
+              "stringValue": "parent1@mail.com"
+            },
+            {
+              "name": "Parent 2 email",
+              "stringValue": "parent2@mail.com"
+            }
+          ]
+        },
+        "include": "none",
+        "options": {}
+      },
+      "id": "54c7bbf9-dabc-421b-85b2-7c3006f5ee61",
+      "name": "Edit Fields",
+      "type": "n8n-nodes-base.set",
+      "typeVersion": 3.2,
+      "position": [
+        680,
+        460
+      ]
+    }
+  ],
+  "pinData": {
+    "No Operation, do nothing1": [
+      {
+        "json": {
+          "success": true
+        }
+      }
+    ]
+  },
+  "connections": {
+    "When clicking \"Execute Workflow\"": {
+      "main": [
+        [
+          {
+            "node": "Edit Fields",
+            "type": "main",
+            "index": 0
+          }
+        ]
+      ]
+    },
+    "Get matching families": {
+      "main": [
+        [
+          {
+            "node": "No Operation, do nothing1",
+            "type": "main",
+            "index": 0
+          }
+        ]
+      ]
+    },
+    "Edit Fields": {
+      "main": [
+        [
+          {
+            "node": "Get matching families",
+            "type": "main",
+            "index": 0
+          }
+        ]
+      ]
+    }
+  },
+  "active": false,
+  "settings": {
+    "executionOrder": "v1"
+  },
+  "versionId": "aeb01d24-c117-405a-875f-909ea8ccdc16",
+  "id": "GlTwlHZfQwNjbeqv",
+  "meta": {
+    "instanceId": "b888bd11cd1ddbb95450babf3e199556799d999b896f650de768b8370ee50363"
+  },
+  "tags": []
+}