chore: minor formatting changes

2026-02-21 23:11:44 +00:00 · 2024-11-20 12:56:10 +01:00
parent ddf99c39d0 86826a651a
commit d98524ab9c
9 changed files with 353 additions and 48 deletions
--- a/sample/12-graphql-schema-first/e2e/cats/cats.e2e-spec.ts
+++ b/sample/12-graphql-schema-first/e2e/cats/cats.e2e-spec.ts
@@ -0,0 +1,67 @@
+import { INestApplication } from '@nestjs/common';
+import { Test, TestingModule } from '@nestjs/testing';
+import * as request from 'supertest';
+
+import { Cat } from '../../src/graphql.schema';
+import { AppModule } from '../../src/app.module';
+
+describe('Cats Resolver (e2e)', () => {
+  let app: INestApplication;
+  let cat: Cat;
+
+  beforeEach(async () => {
+    const moduleFixture: TestingModule = await Test.createTestingModule({
+      imports: [AppModule],
+    }).compile();
+
+    app = moduleFixture.createNestApplication();
+    await app.init();
+  });
+
+  afterEach(async () => {
+    await app.close();
+  });
+
+  it('should create a new cat', async () => {
+    const query = `
+      mutation {
+        createCat(createCatInput: { name: "Cat", age: 5 }) {
+          id
+          name
+          age
+        }
+      }
+    `;
+
+    return request(app.getHttpServer())
+      .post('/graphql')
+      .send({ query })
+      .expect(200)
+      .expect(response => {
+        cat = response.body.data.createCat;
+        expect(cat.name).toEqual('Cat');
+        expect(cat.age).toEqual(5);
+      });
+  });
+
+  it('should get all cats', async () => {
+    const query = `
+      query {
+        cats {
+          id
+          name
+          age
+        }
+      }
+    `;
+
+    return request(app.getHttpServer())
+      .post('/graphql')
+      .send({ query })
+      .expect(200)
+      .expect(response => {
+        const cats = response.body.data.cats;
+        expect(cats[0].name).toEqual('Cat');
+      });
+  });
+});
--- a/sample/12-graphql-schema-first/e2e/jest-e2e.json
+++ b/sample/12-graphql-schema-first/e2e/jest-e2e.json
@@ -0,0 +1,13 @@
+{
+  "moduleFileExtensions": ["ts", "tsx", "js", "json"],
+  "transform": {
+    "^.+\\.tsx?$": "ts-jest"
+  },
+  "testRegex": "/e2e/.*\\.(e2e-test|e2e-spec).(ts|tsx|js)$",
+  "collectCoverageFrom": [
+    "src/**/*.{js,jsx,tsx,ts}",
+    "!**/node_modules/**",
+    "!**/vendor/**"
+  ],
+  "coverageReporters": ["json", "lcov"]
+}
--- a/sample/12-graphql-schema-first/package-lock.json
+++ b/sample/12-graphql-schema-first/package-lock.json
@@ -29,6 +29,7 @@
        "@nestjs/schematics": "10.1.1",
        "@nestjs/testing": "10.3.2",
        "@types/express": "4.17.21",
+        "@types/jest": "29.5.10",
        "@types/node": "20.17.6",
        "@types/supertest": "6.0.2",
        "@typescript-eslint/eslint-plugin": "5.62.0",
@@ -2577,7 +2578,7 @@
      "version": "0.22.0",
      "resolved": "https://registry.npmjs.org/@ts-morph/common/-/common-0.22.0.tgz",
      "integrity": "sha512-HqNBuV/oIlMKdkLshXd1zKBqNQCsuPEsgQOkfFQ/eUKjRlwndXW1AjN9LVkBEIukm00gGXSRmfkl0Wv5VXLnlw==",
-      "devOptional": true,
+      "dev": true,
      "dependencies": {
        "fast-glob": "^3.3.2",
        "minimatch": "^9.0.3",
@@ -2589,7 +2590,7 @@
      "version": "2.0.1",
      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-2.0.1.tgz",
      "integrity": "sha512-XnAIvQ8eM+kC6aULx6wuQiwVsnzsi9d3WxzV3FpWTGA19F621kwdbsAcFKXgKUHZWsy+mY6iL1sHTxWEFCytDA==",
-      "devOptional": true,
+      "dev": true,
      "dependencies": {
        "balanced-match": "^1.0.0"
      }
@@ -2598,7 +2599,7 @@
      "version": "9.0.3",
      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-9.0.3.tgz",
      "integrity": "sha512-RHiac9mvaRw0x3AYRgDC1CxAP7HTcNrrECeA8YYJeWnpo+2Q5CegtZjaotWTWxDG3UeGA1coE05iH1mPjT/2mg==",
-      "devOptional": true,
+      "dev": true,
      "dependencies": {
        "brace-expansion": "^2.0.1"
      },
@@ -2613,7 +2614,7 @@
      "version": "3.0.1",
      "resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-3.0.1.tgz",
      "integrity": "sha512-+NsyUUAZDmo6YVHzL/stxSu3t9YS1iljliy3BSDrXJ/dkn1KYdmtZODGGjLcc9XLgVVpH4KshHB8XmZgMhaBXg==",
-      "devOptional": true,
+      "dev": true,
      "bin": {
        "mkdirp": "dist/cjs/src/bin.js"
      },
@@ -2792,6 +2793,16 @@
        "@types/istanbul-lib-report": "*"
      }
    },
+    "node_modules/@types/jest": {
+      "version": "29.5.10",
+      "resolved": "https://registry.npmjs.org/@types/jest/-/jest-29.5.10.tgz",
+      "integrity": "sha512-tE4yxKEphEyxj9s4inideLHktW/x6DwesIwWZ9NN1FKf9zbJYsnhBoA9vrHA/IuIOKwPa5PcFBNV4lpMIOEzyQ==",
+      "dev": true,
+      "dependencies": {
+        "expect": "^29.0.0",
+        "pretty-format": "^29.0.0"
+      }
+    },
    "node_modules/@types/json-schema": {
      "version": "7.0.11",
      "resolved": "https://registry.npmjs.org/@types/json-schema/-/json-schema-7.0.11.tgz",
@@ -4164,7 +4175,7 @@
      "version": "12.0.0",
      "resolved": "https://registry.npmjs.org/code-block-writer/-/code-block-writer-12.0.0.tgz",
      "integrity": "sha512-q4dMFMlXtKR3XNBHyMHt/3pwYNA69EDk00lloMOaaUMKPUXBw6lpXtbu3MMVG6/uOihGnRDOlkyqsONEUj60+w==",
-      "devOptional": true
+      "dev": true
    },
    "node_modules/collect-v8-coverage": {
      "version": "1.0.2",
@@ -7993,7 +8004,7 @@
      "version": "1.0.1",
      "resolved": "https://registry.npmjs.org/path-browserify/-/path-browserify-1.0.1.tgz",
      "integrity": "sha512-b7uo2UCUOYZcnF/3ID0lulOJi/bafxa1xPe7ZPsammBSpjSWQkjNxlt635YGS2MiR9GjvuXCtz2emr3jbsz98g==",
-      "devOptional": true
+      "dev": true
    },
    "node_modules/path-exists": {
      "version": "4.0.0",
@@ -9471,7 +9482,7 @@
      "version": "21.0.1",
      "resolved": "https://registry.npmjs.org/ts-morph/-/ts-morph-21.0.1.tgz",
      "integrity": "sha512-dbDtVdEAncKctzrVZ+Nr7kHpHkv+0JDJb2MjjpBaj8bFeCkePU9rHfMklmhuLFnpeq/EJZk2IhStY6NzqgjOkg==",
-      "devOptional": true,
+      "dev": true,
      "dependencies": {
        "@ts-morph/common": "~0.22.0",
        "code-block-writer": "^12.0.0"
@@ -10348,8 +10359,7 @@
    "@apollo/cache-control-types": {
      "version": "1.0.3",
      "resolved": "https://registry.npmjs.org/@apollo/cache-control-types/-/cache-control-types-1.0.3.tgz",
-      "integrity": "sha512-F17/vCp7QVwom9eG7ToauIKdAxpSoadsJnqIfyryLFSkLSOEqu+eC5Z3N8OXcUVStuOMcNHlyraRsA6rRICu4g==",
-      "requires": {}
+      "integrity": "sha512-F17/vCp7QVwom9eG7ToauIKdAxpSoadsJnqIfyryLFSkLSOEqu+eC5Z3N8OXcUVStuOMcNHlyraRsA6rRICu4g=="
    },
    "@apollo/protobufjs": {
      "version": "1.2.7",
@@ -10449,8 +10459,7 @@
    "@apollo/utils.dropunuseddefinitions": {
      "version": "2.0.1",
      "resolved": "https://registry.npmjs.org/@apollo/utils.dropunuseddefinitions/-/utils.dropunuseddefinitions-2.0.1.tgz",
-      "integrity": "sha512-EsPIBqsSt2BwDsv8Wu76LK5R1KtsVkNoO4b0M5aK0hx+dGg9xJXuqlr7Fo34Dl+y83jmzn+UvEW+t1/GP2melA==",
-      "requires": {}
+      "integrity": "sha512-EsPIBqsSt2BwDsv8Wu76LK5R1KtsVkNoO4b0M5aK0hx+dGg9xJXuqlr7Fo34Dl+y83jmzn+UvEW+t1/GP2melA=="
    },
    "@apollo/utils.fetcher": {
      "version": "2.0.0",
@@ -10486,14 +10495,12 @@
    "@apollo/utils.printwithreducedwhitespace": {
      "version": "2.0.1",
      "resolved": "https://registry.npmjs.org/@apollo/utils.printwithreducedwhitespace/-/utils.printwithreducedwhitespace-2.0.1.tgz",
-      "integrity": "sha512-9M4LUXV/fQBh8vZWlLvb/HyyhjJ77/I5ZKu+NBWV/BmYGyRmoEP9EVAy7LCVoY3t8BDcyCAGfxJaLFCSuQkPUg==",
-      "requires": {}
+      "integrity": "sha512-9M4LUXV/fQBh8vZWlLvb/HyyhjJ77/I5ZKu+NBWV/BmYGyRmoEP9EVAy7LCVoY3t8BDcyCAGfxJaLFCSuQkPUg=="
    },
    "@apollo/utils.removealiases": {
      "version": "2.0.1",
      "resolved": "https://registry.npmjs.org/@apollo/utils.removealiases/-/utils.removealiases-2.0.1.tgz",
-      "integrity": "sha512-0joRc2HBO4u594Op1nev+mUF6yRnxoUH64xw8x3bX7n8QBDYdeYgY4tF0vJReTy+zdn2xv6fMsquATSgC722FA==",
-      "requires": {}
+      "integrity": "sha512-0joRc2HBO4u594Op1nev+mUF6yRnxoUH64xw8x3bX7n8QBDYdeYgY4tF0vJReTy+zdn2xv6fMsquATSgC722FA=="
    },
    "@apollo/utils.sortast": {
      "version": "2.0.1",
@@ -10506,8 +10513,7 @@
    "@apollo/utils.stripsensitiveliterals": {
      "version": "2.0.1",
      "resolved": "https://registry.npmjs.org/@apollo/utils.stripsensitiveliterals/-/utils.stripsensitiveliterals-2.0.1.tgz",
-      "integrity": "sha512-QJs7HtzXS/JIPMKWimFnUMK7VjkGQTzqD9bKD1h3iuPAqLsxd0mUNVbkYOPTsDhUKgcvUOfOqOJWYohAKMvcSA==",
-      "requires": {}
+      "integrity": "sha512-QJs7HtzXS/JIPMKWimFnUMK7VjkGQTzqD9bKD1h3iuPAqLsxd0mUNVbkYOPTsDhUKgcvUOfOqOJWYohAKMvcSA=="
    },
    "@apollo/utils.usagereporting": {
      "version": "2.1.0",
@@ -11175,8 +11181,7 @@
    "@graphql-typed-document-node/core": {
      "version": "3.1.2",
      "resolved": "https://registry.npmjs.org/@graphql-typed-document-node/core/-/core-3.1.2.tgz",
-      "integrity": "sha512-9anpBMM9mEgZN4wr2v8wHJI2/u5TnnggewRN6OlvXTTnuVyoY19X6rOv9XTqKRw6dcGKwZsBi8n0kDE2I5i4VA==",
-      "requires": {}
+      "integrity": "sha512-9anpBMM9mEgZN4wr2v8wHJI2/u5TnnggewRN6OlvXTTnuVyoY19X6rOv9XTqKRw6dcGKwZsBi8n0kDE2I5i4VA=="
    },
    "@humanwhocodes/config-array": {
      "version": "0.11.10",
@@ -11854,8 +11859,7 @@
    "@nestjs/mapped-types": {
      "version": "2.0.5",
      "resolved": "https://registry.npmjs.org/@nestjs/mapped-types/-/mapped-types-2.0.5.tgz",
-      "integrity": "sha512-bSJv4pd6EY99NX9CjBIyn4TVDoSit82DUZlL4I3bqNfy5Gt+gXTa86i3I/i0iIV9P4hntcGM5GyO+FhZAhxtyg==",
-      "requires": {}
+      "integrity": "sha512-bSJv4pd6EY99NX9CjBIyn4TVDoSit82DUZlL4I3bqNfy5Gt+gXTa86i3I/i0iIV9P4hntcGM5GyO+FhZAhxtyg=="
    },
    "@nestjs/platform-express": {
      "version": "10.3.8",
@@ -12020,7 +12024,7 @@
      "version": "0.22.0",
      "resolved": "https://registry.npmjs.org/@ts-morph/common/-/common-0.22.0.tgz",
      "integrity": "sha512-HqNBuV/oIlMKdkLshXd1zKBqNQCsuPEsgQOkfFQ/eUKjRlwndXW1AjN9LVkBEIukm00gGXSRmfkl0Wv5VXLnlw==",
-      "devOptional": true,
+      "dev": true,
      "requires": {
        "fast-glob": "^3.3.2",
        "minimatch": "^9.0.3",
@@ -12032,7 +12036,7 @@
          "version": "2.0.1",
          "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-2.0.1.tgz",
          "integrity": "sha512-XnAIvQ8eM+kC6aULx6wuQiwVsnzsi9d3WxzV3FpWTGA19F621kwdbsAcFKXgKUHZWsy+mY6iL1sHTxWEFCytDA==",
-          "devOptional": true,
+          "dev": true,
          "requires": {
            "balanced-match": "^1.0.0"
          }
@@ -12041,7 +12045,7 @@
          "version": "9.0.3",
          "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-9.0.3.tgz",
          "integrity": "sha512-RHiac9mvaRw0x3AYRgDC1CxAP7HTcNrrECeA8YYJeWnpo+2Q5CegtZjaotWTWxDG3UeGA1coE05iH1mPjT/2mg==",
-          "devOptional": true,
+          "dev": true,
          "requires": {
            "brace-expansion": "^2.0.1"
          }
@@ -12050,7 +12054,7 @@
          "version": "3.0.1",
          "resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-3.0.1.tgz",
          "integrity": "sha512-+NsyUUAZDmo6YVHzL/stxSu3t9YS1iljliy3BSDrXJ/dkn1KYdmtZODGGjLcc9XLgVVpH4KshHB8XmZgMhaBXg==",
-          "devOptional": true
+          "dev": true
        }
      }
    },
@@ -12222,6 +12226,16 @@
        "@types/istanbul-lib-report": "*"
      }
    },
+    "@types/jest": {
+      "version": "29.5.10",
+      "resolved": "https://registry.npmjs.org/@types/jest/-/jest-29.5.10.tgz",
+      "integrity": "sha512-tE4yxKEphEyxj9s4inideLHktW/x6DwesIwWZ9NN1FKf9zbJYsnhBoA9vrHA/IuIOKwPa5PcFBNV4lpMIOEzyQ==",
+      "dev": true,
+      "requires": {
+        "expect": "^29.0.0",
+        "pretty-format": "^29.0.0"
+      }
+    },
    "@types/json-schema": {
      "version": "7.0.11",
      "resolved": "https://registry.npmjs.org/@types/json-schema/-/json-schema-7.0.11.tgz",
@@ -12628,15 +12642,13 @@
      "version": "1.9.0",
      "resolved": "https://registry.npmjs.org/acorn-import-assertions/-/acorn-import-assertions-1.9.0.tgz",
      "integrity": "sha512-cmMwop9x+8KFhxvKrKfPYmN6/pKTYYHBqLa0DfvVZcKMJWNyWLnaqND7dx/qn66R7ewM1UX5XMaDVP5wlVTaVA==",
-      "dev": true,
-      "requires": {}
+      "dev": true
    },
    "acorn-jsx": {
      "version": "5.3.2",
      "resolved": "https://registry.npmjs.org/acorn-jsx/-/acorn-jsx-5.3.2.tgz",
      "integrity": "sha512-rq9s+JNhf0IChjtDXxllJ7g41oZk5SlXtp0LHwyA5cejwn7vKmKp4pPri6YEePv2PU65sAsegbXtIinmDFDXgQ==",
-      "dev": true,
-      "requires": {}
+      "dev": true
    },
    "acorn-walk": {
      "version": "8.2.0",
@@ -12691,8 +12703,7 @@
      "version": "3.5.2",
      "resolved": "https://registry.npmjs.org/ajv-keywords/-/ajv-keywords-3.5.2.tgz",
      "integrity": "sha512-5p6WTN0DdTGVQk6VjcEju19IgaHudalcfabD7yhDGeA6bcQnmL+CpveLJq/3hvfwd1aof6L386Ougkx6RfyMIQ==",
-      "dev": true,
-      "requires": {}
+      "dev": true
    },
    "ansi-colors": {
      "version": "4.1.3",
@@ -13242,7 +13253,7 @@
      "version": "12.0.0",
      "resolved": "https://registry.npmjs.org/code-block-writer/-/code-block-writer-12.0.0.tgz",
      "integrity": "sha512-q4dMFMlXtKR3XNBHyMHt/3pwYNA69EDk00lloMOaaUMKPUXBw6lpXtbu3MMVG6/uOihGnRDOlkyqsONEUj60+w==",
-      "devOptional": true
+      "dev": true
    },
    "collect-v8-coverage": {
      "version": "1.0.2",
@@ -13444,8 +13455,7 @@
      "version": "1.5.1",
      "resolved": "https://registry.npmjs.org/dedent/-/dedent-1.5.1.tgz",
      "integrity": "sha512-+LxW+KLWxu3HW3M2w2ympwtqPrqYRzU8fqi6Fhd18fBALe15blJPI/I4+UHveMVG6lJqB4JNd4UG0S5cnVHwIg==",
-      "dev": true,
-      "requires": {}
+      "dev": true
    },
    "deep-is": {
      "version": "0.1.3",
@@ -13803,8 +13813,7 @@
      "version": "9.1.0",
      "resolved": "https://registry.npmjs.org/eslint-config-prettier/-/eslint-config-prettier-9.1.0.tgz",
      "integrity": "sha512-NSWl5BFQWEPi1j4TjVNItzYV7dZXZ+wP6I6ZhrBGpChQhZRUaElihE9uRRkcbRnNb76UMKDF3r+WTmNcGPKsqw==",
-      "dev": true,
-      "requires": {}
+      "dev": true
    },
    "eslint-import-resolver-node": {
      "version": "0.3.9",
@@ -14539,8 +14548,7 @@
    "graphql-ws": {
      "version": "5.16.0",
      "resolved": "https://registry.npmjs.org/graphql-ws/-/graphql-ws-5.16.0.tgz",
-      "integrity": "sha512-Ju2RCU2dQMgSKtArPbEtsK5gNLnsQyTNIo/T7cZNp96niC1x0KdJNZV0TIoilceBPQwfb5itrGl8pkFeOUMl4A==",
-      "requires": {}
+      "integrity": "sha512-Ju2RCU2dQMgSKtArPbEtsK5gNLnsQyTNIo/T7cZNp96niC1x0KdJNZV0TIoilceBPQwfb5itrGl8pkFeOUMl4A=="
    },
    "has": {
      "version": "1.0.3",
@@ -15292,8 +15300,7 @@
      "version": "1.2.3",
      "resolved": "https://registry.npmjs.org/jest-pnp-resolver/-/jest-pnp-resolver-1.2.3.tgz",
      "integrity": "sha512-+3NpwQEnRoIBtx4fyhblQDPgJI0H1IEIkX7ShLUjPGA7TtUTvI1oiKi3SR4oBR0hQhQR80l4WAe5RrXBwWMA8w==",
-      "dev": true,
-      "requires": {}
+      "dev": true
    },
    "jest-regex-util": {
      "version": "29.6.3",
@@ -16113,7 +16120,7 @@
      "version": "1.0.1",
      "resolved": "https://registry.npmjs.org/path-browserify/-/path-browserify-1.0.1.tgz",
      "integrity": "sha512-b7uo2UCUOYZcnF/3ID0lulOJi/bafxa1xPe7ZPsammBSpjSWQkjNxlt635YGS2MiR9GjvuXCtz2emr3jbsz98g==",
-      "devOptional": true
+      "dev": true
    },
    "path-exists": {
      "version": "4.0.0",
@@ -16936,8 +16943,7 @@
        "ws": {
          "version": "7.5.7",
          "resolved": "https://registry.npmjs.org/ws/-/ws-7.5.7.tgz",
-          "integrity": "sha512-KMvVuFzpKBuiIXW3E4u3mySRO2/mCHSyZDJQM5NQ9Q9KHWHWh0NHgfbRMLLrceUK5qAL4ytALJbpRMjixFZh8A==",
-          "requires": {}
+          "integrity": "sha512-KMvVuFzpKBuiIXW3E4u3mySRO2/mCHSyZDJQM5NQ9Q9KHWHWh0NHgfbRMLLrceUK5qAL4ytALJbpRMjixFZh8A=="
        }
      }
    },
@@ -17153,7 +17159,7 @@
      "version": "21.0.1",
      "resolved": "https://registry.npmjs.org/ts-morph/-/ts-morph-21.0.1.tgz",
      "integrity": "sha512-dbDtVdEAncKctzrVZ+Nr7kHpHkv+0JDJb2MjjpBaj8bFeCkePU9rHfMklmhuLFnpeq/EJZk2IhStY6NzqgjOkg==",
-      "devOptional": true,
+      "dev": true,
      "requires": {
        "@ts-morph/common": "~0.22.0",
        "code-block-writer": "^12.0.0"
@@ -17571,8 +17577,7 @@
    "ws": {
      "version": "8.17.1",
      "resolved": "https://registry.npmjs.org/ws/-/ws-8.17.1.tgz",
-      "integrity": "sha512-6XQFvXTkbfUOZOKKILFG1PDK2NDQs4azKQl26T0YS5CxqWLgXajbPZ+h4gZekJyRqFU8pvnbAbbs/3TgRPy+GQ==",
-      "requires": {}
+      "integrity": "sha512-6XQFvXTkbfUOZOKKILFG1PDK2NDQs4azKQl26T0YS5CxqWLgXajbPZ+h4gZekJyRqFU8pvnbAbbs/3TgRPy+GQ=="
    },
    "xss": {
      "version": "1.0.14",
--- a/sample/12-graphql-schema-first/package.json
+++ b/sample/12-graphql-schema-first/package.json
@@ -16,7 +16,7 @@
    "test:watch": "jest --watch",
    "test:cov": "jest --coverage",
    "test:debug": "node --inspect-brk -r tsconfig-paths/register -r ts-node/register node_modules/.bin/jest --runInBand",
-    "test:e2e": "echo 'No e2e tests implemented yet.'"
+    "test:e2e": "jest --config ./e2e/jest-e2e.json"
  },
  "dependencies": {
    "@apollo/server": "4.9.3",
@@ -39,6 +39,7 @@
    "@nestjs/schematics": "10.1.1",
    "@nestjs/testing": "10.3.2",
    "@types/express": "4.17.21",
+    "@types/jest": "29.5.10",
    "@types/node": "20.17.6",
    "@types/supertest": "6.0.2",
    "@typescript-eslint/eslint-plugin": "5.62.0",
@@ -55,5 +56,36 @@
    "ts-node": "10.9.2",
    "tsconfig-paths": "4.2.0",
    "typescript": "5.3.3"
+  },
+  "jest": {
+    "moduleFileExtensions": [
+      "js",
+      "json",
+      "ts"
+    ],
+    "rootDir": "src",
+    "testRegex": ".*\\.spec\\.ts$",
+    "transform": {
+      "^.+\\.(t|j)s$": "ts-jest"
+    },
+    "collectCoverageFrom": [
+      "**/*.(t|j)s",
+      "!main.(t|j)s",
+      "!**/*.module.(t|j)s",
+      "!**/*.dto.(t|j)s",
+      "!**/*.entity.(t|j)s",
+      "!**/*.guard.(t|j)s",
+      "!**/*.response.(t|j)s",
+      "!**/*.strategy.(t|j)s",
+      "!**/*.args.(t|j)s",
+      "!**/*.types.(t|j)s",
+      "!**/*.directive.(t|j)s",
+      "!**/*.plugin.(t|j)s",
+      "!**/*.scalar.(t|j)s",
+      "!**/*.schema.(t|j)s",
+      "!**/node_modules/**"
+    ],
+    "coverageDirectory": "../coverage",
+    "testEnvironment": "node"
  }
 }
--- a/sample/12-graphql-schema-first/src/cats/cat-owner.resolver.spec.ts
+++ b/sample/12-graphql-schema-first/src/cats/cat-owner.resolver.spec.ts
@@ -0,0 +1,42 @@
+import { Test, TestingModule } from '@nestjs/testing';
+import { Cat, Owner } from '../graphql.schema';
+import { OwnersService } from '../owners/owners.service';
+import { CatOwnerResolver } from './cat-owner.resolver';
+
+describe('CatOwnerResolver', () => {
+  let resolver: CatOwnerResolver;
+  let ownersService: OwnersService;
+
+  beforeEach(async () => {
+    const moduleRef: TestingModule = await Test.createTestingModule({
+      providers: [
+        CatOwnerResolver,
+        {
+          provide: OwnersService,
+          useValue: {
+            findOneById: jest.fn(),
+          },
+        },
+      ],
+    }).compile();
+
+    resolver = moduleRef.get(CatOwnerResolver);
+    ownersService = moduleRef.get(OwnersService);
+  });
+
+  it('should be defined', () => {
+    expect(resolver).toBeDefined();
+  });
+
+  it('should resolve the owner for a cat', async () => {
+    const cat: Cat & { ownerId: number } = { id: 1, ownerId: 101 };
+    const owner: Owner = { id: 101, name: 'Kambale' };
+
+    jest.spyOn(ownersService, 'findOneById').mockImplementation(() => owner);
+
+    const resolvedOwner = await resolver.owner(cat);
+
+    expect(ownersService.findOneById).toHaveBeenCalledWith(cat.ownerId);
+    expect(resolvedOwner).toEqual(owner);
+  });
+});
--- a/sample/12-graphql-schema-first/src/cats/cats.resolver.spec.ts
+++ b/sample/12-graphql-schema-first/src/cats/cats.resolver.spec.ts
@@ -0,0 +1,63 @@
+import { Test, TestingModule } from '@nestjs/testing';
+
+import { Cat } from '../graphql.schema';
+import { CatsResolver } from './cats.resolver';
+import { CatsService } from './cats.service';
+
+import { MINIMUM_AGE, MINIMUM_AGE_ERROR } from './dto/create-cat.dto';
+
+describe('CatsResolver', () => {
+  let resolver: CatsResolver;
+  const cat: Cat = { name: 'Cat', age: 5 };
+
+  beforeEach(async () => {
+    const moduleRef: TestingModule = await Test.createTestingModule({
+      providers: [
+        CatsResolver,
+        {
+          provide: CatsService,
+          useValue: {
+            create: jest
+              .fn()
+              .mockImplementation((cat: Cat) => ({ id: 1, ...cat })),
+            findAll: jest.fn().mockReturnValue([cat]),
+            findOneById: jest
+              .fn()
+              .mockImplementation((id: number) => ({ ...cat, id })),
+          },
+        },
+      ],
+    }).compile();
+
+    resolver = moduleRef.get<CatsResolver>(CatsResolver);
+  });
+
+  it('should be defined', () => {
+    expect(resolver).toBeDefined();
+  });
+
+  it('should create a new cat', async () => {
+    const newCat = await resolver.create({ name: cat.name, age: cat.age });
+    expect(newCat.name).toEqual(cat.name);
+    expect(newCat).toEqual({ id: 1, ...cat });
+  });
+
+  it(`should fail to save if the age is under ${MINIMUM_AGE}`, async () => {
+    try {
+      await resolver.create({ name: cat.name, age: 0 });
+    } catch (error) {
+      expect(error.message).toBe(MINIMUM_AGE_ERROR);
+    }
+  });
+
+  it('should return all cats', async () => {
+    const cats = await resolver.getCats();
+    expect(cats.length).toEqual(1);
+    expect(cats[0].name).toEqual(cat.name);
+  });
+
+  it('should return a cat by id', async () => {
+    const cat = await resolver.findOneById(1);
+    expect(cat).toEqual({ ...cat, id: 1 });
+  });
+});
--- a/sample/12-graphql-schema-first/src/cats/cats.service.spec.ts
+++ b/sample/12-graphql-schema-first/src/cats/cats.service.spec.ts
@@ -0,0 +1,42 @@
+import { Test, TestingModule } from '@nestjs/testing';
+import { CatsService } from './cats.service';
+import { Cat } from 'src/graphql.schema';
+
+describe('CatsService', () => {
+  let service: CatsService;
+  const cat: Cat = { name: 'Cat', age: 5 };
+
+  beforeEach(async () => {
+    const module: TestingModule = await Test.createTestingModule({
+      providers: [CatsService],
+    }).compile();
+
+    service = module.get<CatsService>(CatsService);
+  });
+
+  it('should be defined', () => {
+    expect(service).toBeDefined();
+  });
+
+  it('should create a new cat', () => {
+    const newCat = service.create(cat);
+    expect(newCat.name).toEqual(cat.name);
+    expect(newCat).toEqual({ id: 1, ...cat });
+  });
+
+  it('should return all cats', () => {
+    const cats = service.findAll();
+    expect(cats.length).toEqual(1);
+    expect(cats[0].name).toEqual(cat.name);
+  });
+
+  it('should return a cat by id', () => {
+    const cat = service.findOneById(1);
+    expect(cat).toEqual({ ...cat, id: 1 });
+  });
+
+  it('should return undefined if cat not found', () => {
+    const cat = service.findOneById(2);
+    expect(cat).toBeUndefined();
+  });
+});
--- a/sample/12-graphql-schema-first/src/cats/dto/create-cat.dto.ts
+++ b/sample/12-graphql-schema-first/src/cats/dto/create-cat.dto.ts
@@ -1,7 +1,10 @@
 import { Min } from 'class-validator';
 import { CreateCatInput } from '../../graphql.schema';

+export const MINIMUM_AGE = 1;
+export const MINIMUM_AGE_ERROR = `Age must be greater than ${MINIMUM_AGE}`;
+
 export class CreateCatDto extends CreateCatInput {
-  @Min(1)
+  @Min(MINIMUM_AGE, { message: MINIMUM_AGE_ERROR })
  age: number;
 }
--- a/sample/12-graphql-schema-first/src/owners/owners.service.spec.ts
+++ b/sample/12-graphql-schema-first/src/owners/owners.service.spec.ts
@@ -0,0 +1,38 @@
+import { Test, TestingModule } from '@nestjs/testing';
+import { Owner } from '../graphql.schema';
+import { OwnersService } from './owners.service';
+
+describe('OwnersService', () => {
+  let service: OwnersService;
+
+  beforeEach(async () => {
+    const module: TestingModule = await Test.createTestingModule({
+      providers: [OwnersService],
+    }).compile();
+
+    service = module.get<OwnersService>(OwnersService);
+  });
+
+  it('should be defined', () => {
+    expect(service).toBeDefined();
+  });
+
+  describe('findOneById', () => {
+    it('should return an owner if exists', () => {
+      const ownerId = 1;
+      const expectedOwner: Owner = { id: 1, name: 'Jon', age: 5 };
+
+      const result = service.findOneById(ownerId);
+
+      expect(result).toEqual(expectedOwner);
+    });
+
+    it('should return undefined if owner does not exist', () => {
+      const ownerId = 9999;
+
+      const result = service.findOneById(ownerId);
+
+      expect(result).toBeUndefined();
+    });
+  });
+});