Mercurial > js4py
comparison core-javascript/testtools.rst @ 150:5118d0e38ba4 core-javascript-latex
$ hg merge core-javascript # into core-javascript-latex
| author | jf3243 |
|---|---|
| date | Tue, 01 Nov 2011 08:58:38 +0000 |
| parents | 71b7fd796ddf |
| children | b04f509bee83 |
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| 136:5666f217df39 | 150:5118d0e38ba4 |
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| 1 Test tools | |
| 2 ========== | |
| 3 | |
| 4 To make it easier to test code, and to ensure that example code is | |
| 5 correct, there is a small testtools.js file in the work folder. | |
| 6 | |
| 7 | |
| 8 How to write tests | |
| 9 ------------------ | |
| 10 | |
| 11 To prepare a test create a file like this. It's also in the work | |
| 12 folder. (For real examples the file will give *assert* a more | |
| 13 interesting argument, whose truth or falsity is perhaps not obvious.) | |
| 14 | |
| 15 .. literalinclude:: /core-javascript-work/demo_testtools.js | |
| 16 :language: javascript | |
| 17 | |
| 18 | |
| 19 How to run tests | |
| 20 ---------------- | |
| 21 | |
| 22 Here's how to run the tests at the command line, finishing with a | |
| 23 command prompt that allows you inspect the state and also run the test | |
| 24 again. | |
| 25 | |
| 26 | |
| 27 Rhino | |
| 28 ^^^^^ | |
| 29 | |
| 30 For Rhino use *load* to run the test again. | |
| 31 | |
| 32 .. code-block:: sh | |
| 33 | |
| 34 core-javascript-work$ js -f testtools.js -f demo_testtools.js -f - | |
| 35 Testing: all-pass | |
| 36 Testing: 2-4-fail | |
| 37 ! assert 2 has failed | |
| 38 ! assert 4 has failed | |
| 39 Rhino 1.7 release 2 2010 01 20 | |
| 40 js> load('demo_testtools.js') // You type this. | |
| 41 Testing: all-pass | |
| 42 Testing: 2-4-fail | |
| 43 ! assert 2 has failed | |
| 44 ! assert 4 has failed | |
| 45 js> | |
| 46 | |
| 47 | |
| 48 JSDB | |
| 49 ^^^^ | |
| 50 | |
| 51 For JSDB use *run* to run the test again. | |
| 52 | |
| 53 .. code-block:: sh | |
| 54 | |
| 55 C:core-javascript-work> jsdb -load testtools.js -load demo_testtools.js | |
| 56 Testing: all-pass | |
| 57 Testing: 2-4-fail | |
| 58 ! assert 2 has failed | |
| 59 ! assert 4 has failed | |
| 60 js> load('demo_testtools.js') // You type this. | |
| 61 Testing: all-pass | |
| 62 Testing: 2-4-fail | |
| 63 ! assert 2 has failed | |
| 64 ! assert 4 has failed | |
| 65 js> | |
| 66 | |
| 67 | |
| 68 testools.js | |
| 69 ----------- | |
| 70 | |
| 71 (Optional on a first reading.) Here's the file testools.js. It's | |
| 72 short and simple (and has a not-nice dependency on global variables). | |
| 73 It also has a branch based on whether it's being run on JSDB or Rhino. | |
| 74 | |
| 75 .. literalinclude:: /core-javascript-work/testtools.js | |
| 76 :language: javascript |