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<div class="title">getchaintips.py</div> </div>
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<a href="getchaintips_8py.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"><a class="line" href="namespacegetchaintips.html"> 1</a></span> <span class="comment">#!/usr/bin/env python2</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"># Copyright (c) 2014-2015 The Bitcoin Core developers</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"># Distributed under the MIT software license, see the accompanying</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"># file COPYING or http://www.opensource.org/licenses/mit-license.php.</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> </div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"># Exercise the getchaintips API. We introduce a network split, work</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"># on chains of different lengths, and join the network together again.</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"># This gives us two tips, verify that it works.</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> </div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="keyword">from</span> <a class="code" href="namespacetest__framework_1_1test__framework.html">test_framework.test_framework</a> <span class="keyword">import</span> BitcoinTestFramework</div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="keyword">from</span> <a class="code" href="namespacetest__framework_1_1util.html">test_framework.util</a> <span class="keyword">import</span> assert_equal</div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> </div><div class="line"><a name="l00013"></a><span class="lineno"><a class="line" href="classgetchaintips_1_1GetChainTipsTest.html"> 13</a></span> <span class="keyword">class </span><a class="code" href="classgetchaintips_1_1GetChainTipsTest.html">GetChainTipsTest</a> (<a class="code" href="classtest__framework_1_1test__framework_1_1BitcoinTestFramework.html">BitcoinTestFramework</a>):</div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> </div><div class="line"><a name="l00015"></a><span class="lineno"><a class="line" href="classgetchaintips_1_1GetChainTipsTest.html#a1f4fe7a886ac3a2911c2ef5d21f85187"> 15</a></span>  <span class="keyword">def </span><a class="code" href="classgetchaintips_1_1GetChainTipsTest.html#a1f4fe7a886ac3a2911c2ef5d21f85187">run_test</a> (self):</div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span>  BitcoinTestFramework.run_test (self)</div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> </div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span>  tips = self.<a class="code" href="classtest__framework_1_1test__framework_1_1BitcoinTestFramework.html#a1c8a2aab0f11f2370c48060835f23f76">nodes</a>[0].getchaintips ()</div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span>  assert_equal (len (tips), 1)</div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span>  assert_equal (tips[0][<span class="stringliteral">'branchlen'</span>], 0)</div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span>  assert_equal (tips[0][<span class="stringliteral">'height'</span>], 200)</div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span>  assert_equal (tips[0][<span class="stringliteral">'status'</span>], <span class="stringliteral">'active'</span>)</div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span> </div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span>  <span class="comment"># Split the network and build two chains of different lengths.</span></div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span>  self.<a class="code" href="classtest__framework_1_1test__framework_1_1BitcoinTestFramework.html#ab7d5efbf08fcc33c9f2123513b44a819">split_network</a> ()</div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  self.<a class="code" href="classtest__framework_1_1test__framework_1_1BitcoinTestFramework.html#a1c8a2aab0f11f2370c48060835f23f76">nodes</a>[0].<a class="code" href="mining_8cpp.html#afc5f2c0cbe40a2f876b46df2929cf359">generate</a>(10)</div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  self.<a class="code" href="classtest__framework_1_1test__framework_1_1BitcoinTestFramework.html#a1c8a2aab0f11f2370c48060835f23f76">nodes</a>[2].<a class="code" href="mining_8cpp.html#afc5f2c0cbe40a2f876b46df2929cf359">generate</a>(20)</div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  self.<a class="code" href="classtest__framework_1_1test__framework_1_1BitcoinTestFramework.html#a65b65b5369351341c6bc4c481a56fb20">sync_all</a> ()</div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span> </div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  tips = self.<a class="code" href="classtest__framework_1_1test__framework_1_1BitcoinTestFramework.html#a1c8a2aab0f11f2370c48060835f23f76">nodes</a>[1].getchaintips ()</div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  assert_equal (len (tips), 1)</div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  shortTip = tips[0]</div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  assert_equal (shortTip[<span class="stringliteral">'branchlen'</span>], 0)</div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  assert_equal (shortTip[<span class="stringliteral">'height'</span>], 210)</div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  assert_equal (tips[0][<span class="stringliteral">'status'</span>], <span class="stringliteral">'active'</span>)</div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span> </div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  tips = self.<a class="code" href="classtest__framework_1_1test__framework_1_1BitcoinTestFramework.html#a1c8a2aab0f11f2370c48060835f23f76">nodes</a>[3].getchaintips ()</div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  assert_equal (len (tips), 1)</div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  longTip = tips[0]</div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  assert_equal (longTip[<span class="stringliteral">'branchlen'</span>], 0)</div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  assert_equal (longTip[<span class="stringliteral">'height'</span>], 220)</div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  assert_equal (tips[0][<span class="stringliteral">'status'</span>], <span class="stringliteral">'active'</span>)</div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span> </div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <span class="comment"># Join the network halves and check that we now have two tips</span></div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  <span class="comment"># (at least at the nodes that previously had the short chain).</span></div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  self.<a class="code" href="classtest__framework_1_1test__framework_1_1BitcoinTestFramework.html#a7dadb84e493723229580d71cffd3a726">join_network</a> ()</div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span> </div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  tips = self.<a class="code" href="classtest__framework_1_1test__framework_1_1BitcoinTestFramework.html#a1c8a2aab0f11f2370c48060835f23f76">nodes</a>[0].getchaintips ()</div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  assert_equal (len (tips), 2)</div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  assert_equal (tips[0], longTip)</div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span> </div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  assert_equal (tips[1][<span class="stringliteral">'branchlen'</span>], 10)</div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  assert_equal (tips[1][<span class="stringliteral">'status'</span>], <span class="stringliteral">'valid-fork'</span>)</div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  tips[1][<span class="stringliteral">'branchlen'</span>] = 0</div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  tips[1][<span class="stringliteral">'status'</span>] = <span class="stringliteral">'active'</span></div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  assert_equal (tips[1], shortTip)</div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span> </div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span> <span class="keywordflow">if</span> __name__ == <span class="stringliteral">'__main__'</span>:</div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  GetChainTipsTest ().main ()</div><div class="ttc" id="classtest__framework_1_1test__framework_1_1BitcoinTestFramework_html_a7dadb84e493723229580d71cffd3a726"><div class="ttname"><a href="classtest__framework_1_1test__framework_1_1BitcoinTestFramework.html#a7dadb84e493723229580d71cffd3a726">test_framework.test_framework.BitcoinTestFramework.join_network</a></div><div class="ttdeci">def join_network(self)</div><div class="ttdef"><b>Definition:</b> <a href="test__framework_8py_source.html#l00088">test_framework.py:88</a></div></div>
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<div class="ttc" id="classtest__framework_1_1test__framework_1_1BitcoinTestFramework_html_a1c8a2aab0f11f2370c48060835f23f76"><div class="ttname"><a href="classtest__framework_1_1test__framework_1_1BitcoinTestFramework.html#a1c8a2aab0f11f2370c48060835f23f76">test_framework.test_framework.BitcoinTestFramework.nodes</a></div><div class="ttdeci">nodes</div><div class="ttdef"><b>Definition:</b> <a href="test__framework_8py_source.html#l00051">test_framework.py:51</a></div></div>
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<div class="ttc" id="namespacetest__framework_1_1test__framework_html"><div class="ttname"><a href="namespacetest__framework_1_1test__framework.html">test_framework.test_framework</a></div><div class="ttdef"><b>Definition:</b> <a href="test__framework_8py_source.html#l00001">test_framework.py:1</a></div></div>
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<div class="ttc" id="classtest__framework_1_1test__framework_1_1BitcoinTestFramework_html"><div class="ttname"><a href="classtest__framework_1_1test__framework_1_1BitcoinTestFramework.html">test_framework.test_framework.BitcoinTestFramework</a></div><div class="ttdef"><b>Definition:</b> <a href="test__framework_8py_source.html#l00032">test_framework.py:32</a></div></div>
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<div class="ttc" id="mining_8cpp_html_afc5f2c0cbe40a2f876b46df2929cf359"><div class="ttname"><a href="mining_8cpp.html#afc5f2c0cbe40a2f876b46df2929cf359">generate</a></div><div class="ttdeci">UniValue generate(const UniValue &params, bool fHelp)</div><div class="ttdef"><b>Definition:</b> <a href="mining_8cpp_source.html#l00122">mining.cpp:122</a></div></div>
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<div class="ttc" id="classgetchaintips_1_1GetChainTipsTest_html_a1f4fe7a886ac3a2911c2ef5d21f85187"><div class="ttname"><a href="classgetchaintips_1_1GetChainTipsTest.html#a1f4fe7a886ac3a2911c2ef5d21f85187">getchaintips.GetChainTipsTest.run_test</a></div><div class="ttdeci">def run_test(self)</div><div class="ttdef"><b>Definition:</b> <a href="getchaintips_8py_source.html#l00015">getchaintips.py:15</a></div></div>
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<div class="ttc" id="classtest__framework_1_1test__framework_1_1BitcoinTestFramework_html_ab7d5efbf08fcc33c9f2123513b44a819"><div class="ttname"><a href="classtest__framework_1_1test__framework_1_1BitcoinTestFramework.html#ab7d5efbf08fcc33c9f2123513b44a819">test_framework.test_framework.BitcoinTestFramework.split_network</a></div><div class="ttdeci">def split_network(self)</div><div class="ttdef"><b>Definition:</b> <a href="test__framework_8py_source.html#l00069">test_framework.py:69</a></div></div>
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<div class="ttc" id="namespacetest__framework_1_1util_html"><div class="ttname"><a href="namespacetest__framework_1_1util.html">test_framework.util</a></div><div class="ttdef"><b>Definition:</b> <a href="util_8py_source.html#l00001">util.py:1</a></div></div>
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<div class="ttc" id="classgetchaintips_1_1GetChainTipsTest_html"><div class="ttname"><a href="classgetchaintips_1_1GetChainTipsTest.html">getchaintips.GetChainTipsTest</a></div><div class="ttdef"><b>Definition:</b> <a href="getchaintips_8py_source.html#l00013">getchaintips.py:13</a></div></div>
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<div class="ttc" id="classtest__framework_1_1test__framework_1_1BitcoinTestFramework_html_a65b65b5369351341c6bc4c481a56fb20"><div class="ttname"><a href="classtest__framework_1_1test__framework_1_1BitcoinTestFramework.html#a65b65b5369351341c6bc4c481a56fb20">test_framework.test_framework.BitcoinTestFramework.sync_all</a></div><div class="ttdeci">def sync_all(self)</div><div class="ttdef"><b>Definition:</b> <a href="test__framework_8py_source.html#l00078">test_framework.py:78</a></div></div>
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