[incubator-dubbo.wiki] branch master updated: Created Test coverage guide (markdown)

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The following commit(s) were added to refs/heads/master by this push:
     new 5215c7a  Created Test coverage guide (markdown)
5215c7a is described below

commit 5215c7a5781ccb00d427e8a23371c1356943dac7
Author: Xin Wang <lo...@hotmail.com>
AuthorDate: Wed Apr 25 13:59:19 2018 +0800

    Created Test coverage guide (markdown)
---
 Test-coverage-guide.md | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/Test-coverage-guide.md b/Test-coverage-guide.md
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+### 1.The benefits of unit testing 
+  * Unit test code can help everyone to go into details and understand the function of the code.
+  * We can find bugs by test case, and then enhance the robustness of the code.
+  * Test case code is also the demo usage of the core code.
+### 2.Some design principle of unit test case 
+  * Steps, fine-grained and combination conditions should be well designed.
+  * Attention to boundary condition test
+  * Test code should also be designed without writing useless code.
+  * When you find a `method` that is hard to write unit test, if you can be sure the `method` is "smelly code", then  refactor it with the committer.
+  * The mock framework in dubbo is: [jmockit](http://jmockit.github.io/).
+  * TDD（optional）：When you start a new issue, you can try to write test case first 
+### 3.The specified value of the test coverage
+  * In the stage, the test coverage specified value of delta changed codes is ：>=60%
+  * We can see the coverage report in this page: https://codecov.io/gh/apache/incubator-dubbo
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