From 6607413b0836fc6eee8222ac735710c88899a685 Mon Sep 17 00:00:00 2001
From: Matt Phillips <matt@mattphillips.io>
Date: Tue, 1 May 2018 12:30:29 +0100
Subject: [PATCH] Add assertions to integration tests

---
 .../__tests__/__snapshots__/each.test.js.snap | 212 ++++++++++++++++++
 integration-tests/__tests__/each.test.js      |  74 ++++++
 2 files changed, 286 insertions(+)
 create mode 100644 integration-tests/__tests__/__snapshots__/each.test.js.snap
 create mode 100644 integration-tests/__tests__/each.test.js

diff --git a/integration-tests/__tests__/__snapshots__/each.test.js.snap b/integration-tests/__tests__/__snapshots__/each.test.js.snap
new file mode 100644
index 000000000000..096799256689
--- /dev/null
+++ b/integration-tests/__tests__/__snapshots__/each.test.js.snap
@@ -0,0 +1,212 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`shows error message when not enough arguments are supplied to tests 1`] = `
+"FAIL __tests__/each-exception.test.js
+  ✕ throws exception when not enough arguments are supplied $left == $right
+  ✓ throws exception when not enough arguments are supplied true == true
+
+  ● throws exception when not enough arguments are supplied $left == $right
+
+    Tagged Template Literal test error:
+    Not enough arguments supplied for given headings: left | right
+    Received: true,true,true
+      
+      at packages/jest-jasmine2/build/each.js:75:17
+
+"
+`;
+
+exports[`shows only the tests with .only as being ran 1`] = `
+"PASS __tests__/each-only.test.js
+  ✓ passes one row expected true == true
+  ✓ passes one row expected true == true
+  ✓ passes one row expected true == true
+  ✓ passes one row expected true == true
+  ○ skipped 4 tests
+
+"
+`;
+
+exports[`shows only the tests without .skip as being ran 1`] = `
+"PASS __tests__/each-skip.test.js
+  ✓ passes one row expected true == true
+  ✓ passes one row expected true == true
+  ✓ passes one row expected true == true
+  ✓ passes one row expected true == true
+  ○ skipped 4 tests
+
+"
+`;
+
+exports[`shows the correct errors in stderr when failing tests 1`] = `
+"FAIL __tests__/failure.test.js
+✓ fails one row expected true == true
+✕ fails one row expected true == false
+✕ fails all rows expected true == false
+✕ fails all rows expected true == false
+✕ fails one row expected true == false
+✓ fails one row expected true == true
+✕ fails all rows expected true == false
+✓ fails all rows expected true == true
+fails all rows expected false == true
+✕ fails
+✕ fails
+fails all rows expected true == false
+✕ fails
+✕ fails
+
+● fails one row expected true == false
+
+expect(received).toBe(expected) // Object.is equality
+
+Expected: false
+Received: true
+
+9 |   'fails one row expected %s == %s',
+10 |   (left, right) => {
+> 11 |     expect(left).toBe(right);
+|                  ^
+12 |   }
+13 | );
+14 |
+
+at __tests__/failure.test.js:11:18
+
+● fails all rows expected true == false
+
+expect(received).toBe(expected) // Object.is equality
+
+Expected: false
+Received: true
+
+16 |   'fails all rows expected %s == %s',
+17 |   (left, right) => {
+> 18 |     expect(left).toBe(right);
+|                  ^
+19 |   }
+20 | );
+21 |
+
+at __tests__/failure.test.js:18:18
+
+● fails all rows expected true == false
+
+expect(received).toBe(expected) // Object.is equality
+
+Expected: false
+Received: true
+
+16 |   'fails all rows expected %s == %s',
+17 |   (left, right) => {
+> 18 |     expect(left).toBe(right);
+|                  ^
+19 |   }
+20 | );
+21 |
+
+at __tests__/failure.test.js:18:18
+
+● fails all rows expected false == true › fails
+
+expect(received).toBe(expected) // Object.is equality
+
+Expected: true
+Received: false
+
+24 |   (left, right) => {
+25 |     it('fails', () => {
+> 26 |       expect(left).toBe(right);
+|                    ^
+27 |     });
+28 |   }
+29 | );
+
+at __tests__/failure.test.js:26:20
+
+● fails all rows expected true == false › fails
+
+expect(received).toBe(expected) // Object.is equality
+
+Expected: false
+Received: true
+
+24 |   (left, right) => {
+25 |     it('fails', () => {
+> 26 |       expect(left).toBe(right);
+|                    ^
+27 |     });
+28 |   }
+29 | );
+
+at __tests__/failure.test.js:26:20
+
+● fails one row expected true == false
+
+expect(received).toBe(expected) // Object.is equality
+
+Expected: false
+Received: true
+
+34 |   \${true} | \${true}
+35 | \`('fails one row expected $left == $right', ({left, right}) => {
+> 36 |   expect(left).toBe(right);
+|                ^
+37 | });
+38 |
+39 | it.each\`
+
+at __tests__/failure.test.js:36:16
+
+● fails all rows expected true == false
+
+expect(received).toBe(expected) // Object.is equality
+
+Expected: false
+Received: true
+
+42 |   \${true} | \${true}
+43 | \`('fails all rows expected $left == $right', ({left, right}) => {
+> 44 |   expect(left).toBe(right);
+|                ^
+45 | });
+46 |
+47 | describe.each\`
+
+at __tests__/failure.test.js:44:16
+
+● fails all rows expected true == false › fails
+
+expect(received).toBe(expected) // Object.is equality
+
+Expected: false
+Received: true
+
+51 | \`('fails all rows expected $left == $right', ({left, right}) => {
+52 |   it('fails ', () => {
+> 53 |     expect(left).toBe(right);
+|                  ^
+54 |   });
+55 | });
+56 |
+
+at __tests__/failure.test.js:53:18
+
+● fails all rows expected false == true › fails
+
+expect(received).toBe(expected) // Object.is equality
+
+Expected: true
+Received: false
+
+51 | \`('fails all rows expected $left == $right', ({left, right}) => {
+52 |   it('fails ', () => {
+> 53 |     expect(left).toBe(right);
+|                  ^
+54 |   });
+55 | });
+56 |
+
+at __tests__/failure.test.js:53:18
+
+"
+`;
diff --git a/integration-tests/__tests__/each.test.js b/integration-tests/__tests__/each.test.js
new file mode 100644
index 000000000000..2cc5ae6f9eab
--- /dev/null
+++ b/integration-tests/__tests__/each.test.js
@@ -0,0 +1,74 @@
+/**
+ * Copyright (c) 2018-present, Facebook, Inc. All rights reserved.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @flow
+ */
+
+'use strict';
+
+const path = require('path');
+const SkipOnWindows = require('../../scripts/SkipOnWindows');
+const runJest = require('../runJest');
+const {extractSummary} = require('../Utils');
+const dir = path.resolve(__dirname, '../each');
+
+SkipOnWindows.suite();
+
+test('works with passing tests', () => {
+  const result = runJest(dir, ['success.test.js']);
+  expect(result.status).toBe(0);
+});
+
+test('shows error message when not enough arguments are supplied to tests', () => {
+  const result = runJest(dir, ['each-exception.test.js']);
+  const rest = extractSummary(result.stderr)
+    .rest.split('\n')
+    .filter(line => line.indexOf('packages/expect/build/index.js') === -1)
+    .join('\n');
+
+  expect(result.status).toBe(1);
+  expect(rest).toMatchSnapshot();
+});
+
+test('shows the correct errors in stderr when failing tests', () => {
+  const result = runJest(dir, ['failure.test.js']);
+
+  expect(result.status).toBe(1);
+
+  const rest = extractSummary(result.stderr)
+    .rest.split('\n')
+    .filter(line => line.indexOf('packages/expect/build/index.js') === -1)
+    .map(line => line.trim())
+    .join('\n');
+
+  expect(rest).toMatchSnapshot();
+});
+
+test('shows only the tests with .only as being ran', () => {
+  const result = runJest(dir, ['each-only.test.js']);
+
+  expect(result.status).toBe(0);
+
+  const rest = extractSummary(result.stderr)
+    .rest.split('\n')
+    .filter(line => line.indexOf('packages/expect/build/index.js') === -1)
+    .join('\n');
+
+  expect(rest).toMatchSnapshot();
+});
+
+test('shows only the tests without .skip as being ran', () => {
+  const result = runJest(dir, ['each-skip.test.js']);
+
+  expect(result.status).toBe(0);
+
+  const rest = extractSummary(result.stderr)
+    .rest.split('\n')
+    .filter(line => line.indexOf('packages/expect/build/index.js') === -1)
+    .join('\n');
+
+  expect(rest).toMatchSnapshot();
+});