unexpected - npm Package Compare versions

Comparing version 1.0.7 to 1.0.8

lib/unexpected.js

@@ -592,2 +592,24 @@ // Copyright (c) 2013 Sune Simonsen <[e-mail]>
 
+    expect.addAssertion('to be an array whose items satisfy', function (callback) {
+        if ('function' !== typeof callback) {
+            throw new Error('Assertions "to be an array whose items satisfy" expects a functions as argument');
+        }
+        expect(this.obj, 'to be an array');
+
+        var errors = [];
+        forEach(this.obj, function (item, index) {
+            try {
+                callback(item);
+            } catch (e) {
+                errors.push('  ' + index + ': ' + e.message.replace(/\n/, '\n  '));
+            }
+        });
+
+        if (errors.length > 0) {
+            var message = 'failed expectation in ' + inspect(this.obj) + '\n' +
+                errors.join('\n');
+            throw new Error(message);
+        }
+    });
+
     Assertion.prototype.inspect = inspect;
@@ -594,0 +616,0 @@ Assertion.prototype.eql = eql;

package.json

 {
   "name": "unexpected",
-  "version": "1.0.7",
+  "version": "1.0.8",
   "author": "Sune Sloth Simonsen <[e-mail]>",
@@ -5,0 +5,0 @@ "keywords": [

ReadMe.md

@@ -305,2 +305,30 @@ # Unexpected
 
+**array whose items satify**: will run an assertion function for each items in an array
+
+```js
+expect([0, 1, 2, 3, 4], 'to be an array whose items satisfy', function (item) {
+    expect(item, 'to be a number');
+});
+```
+
+Using this assertion result in very detailed error reporting show in the below example:
+
+```js
+expect([[0, 1, 2], [4, '5', 6], [7, 8, '9']], 'to be an array whose items satisfy', function (arr) {
+    expect(arr, 'to be an array whose items satisfy', function (item) {
+        expect(item, 'to be a number');
+    });
+});
+```
+
+will output:
+
+```
+failed expectation in [ [ 0, 1, 2 ], [ 4, '5', 6 ], [ 7, 8, '9' ] ]
+  1: failed expectation in [ 4, '5', 6 ]
+    1: expected '5' to be a 'number'
+  2: failed expectation in [ 7, 8, '9' ]
+    2: expected '9' to be a 'number'
+```
+
 ## Print all registered assertions to the console
@@ -307,0 +335,0 @@

test/unexpected.spec.js

@@ -573,2 +573,65 @@ /*global describe, it, expect*/
 
+    describe('to be an array whose items satisfy assertion', function () {
+        it('only accepts a function', function () {
+            expect(function () {
+                expect([1,2,3], 'to be an array whose items satisfy');
+            }, 'to throw', 'Assertions "to be an array whose items satisfy" expects a functions as argument');
+
+            expect(function () {
+                expect([1,2,3], 'to be an array whose items satisfy', 42);
+            }, 'to throw', 'Assertions "to be an array whose items satisfy" expects a functions as argument');
+        });
+
+        it('only accepts arrays as the target object', function () {
+            expect(function () {
+                expect(42, 'to be an array whose items satisfy', function (item) {});
+            }, 'to throw', "expected 42 to be an 'array'");
+        });
+
+        it('asserts that the given callback does not throw for any items in the array', function () {
+            expect([0,1,2,3], 'to be an array whose items satisfy', function (item) {
+                expect(item, 'to be a number');
+            });
+
+            expect(['0','1','2','3'], 'to be an array whose items satisfy', function (item) {
+                expect(item, 'not to be a number');
+            });
+        });
+
+        it('fails when the assertion fails', function () {
+            expect(function () {
+                expect(['0',1,'2','3'], 'to be an array whose items satisfy', function (item) {
+                    expect(item, 'not to be a number');
+                });
+            }, 'to throw', /expected 1 not to be a 'number'/);
+        });
+
+        it('provides a detailed report of where failures occur', function () {
+            expect(function () {
+                expect([0, 1, '2', 3, 4], 'to be an array whose items satisfy', function (item) {
+                    expect(item, 'to be a number');
+                    expect(item, 'to be less than', 4);
+                });
+            }, 'to throw',
+                   "failed expectation in [ 0, 1, '2', 3, 4 ]\n" +
+                   "  2: expected '2' to be a 'number'\n" +
+                   "  4: expected 4 to be less than 4");
+        });
+
+        it('indents failure reports of nested assertions correctly', function () {
+            expect(function () {
+                expect([[0, 1, 2], [4, '5', 6], [7, 8, '9']], 'to be an array whose items satisfy', function (arr) {
+                    expect(arr, 'to be an array whose items satisfy', function (item) {
+                        expect(item, 'to be a number');
+                    });
+                });
+            }, 'to throw',
+                "failed expectation in [ [ 0, 1, 2 ], [ 4, '5', 6 ], [ 7, 8, '9' ] ]\n" +
+                "  1: failed expectation in [ 4, '5', 6 ]\n" +
+                "    1: expected '5' to be a 'number'\n" +
+                "  2: failed expectation in [ 7, 8, '9' ]\n" +
+                "    2: expected '9' to be a 'number'");
+        });
+    });
+
     it('throws if the assertion does not exists', function () {
@@ -575,0 +638,0 @@ expect(function () {

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Total package byte prevSize

213297

increased by2.17%

Lines of code

6507

increased by1.15%

Number of lines in readme file

412

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