adaptiverevisithostqueuetest.html

用JAVA编写的,在做实验的时候留下来的,本来想删的,但是传上来,大家分享吧

<a name="118" href="#118">118</a>         assertEquals(<span class="string">"Size of HQ should now be 1"</span>,1,hq.getSize());
<a name="119" href="#119">119</a>         
<a name="120" href="#120">120</a>         <em class="comment">/*</em>
<a name="121" href="#121">121</a> <em class="comment">         * Invoke next and ensure that the HQ is now busy (initial valence was</em>
<a name="122" href="#122">122</a> <em class="comment">         * set to 1). Also check for proper errors for a busy HQ. Such as when</em>
<a name="123" href="#123">123</a> <em class="comment">         * trying to reinvoke next().</em>
<a name="124" href="#124">124</a> <em class="comment">         *</em>
<a name="125" href="#125">125</a> <em class="comment">         */</em>
<a name="126" href="#126">126</a>         <a href="../../../../org/archive/crawler/datamodel/CrawlURI.html">CrawlURI</a> curi = hq.next(); <em class="comment">// Should return curis[2]</em>
<a name="127" href="#127">127</a>         assertEquals(<span class="string">"next() did not return 'top' URI"</span>,
<a name="128" href="#128">128</a>                 curis[0].toString(),curi.toString());
<a name="129" href="#129">129</a>         assertTrue(<span class="string">"HQ should now be busy, is "</span> + hq.getStateByName(),
<a name="130" href="#130">130</a>                 hq.getState()==AdaptiveRevisitHostQueue.HQSTATE_BUSY);
<a name="131" href="#131">131</a>         <strong>try</strong>{
<a name="132" href="#132">132</a>             hq.next();
<a name="133" href="#133">133</a>             assertTrue(<span class="string">"next() should throw an IllegalStateException if HQ "</span> +
<a name="134" href="#134">134</a>                     <span class="string">"not ready"</span>,false);
<a name="135" href="#135">135</a>         } <strong>catch</strong>(IllegalStateException e){
<a name="136" href="#136">136</a>             <em class="comment">// This is supposed to happen.</em>
<a name="137" href="#137">137</a>         }
<a name="138" href="#138">138</a>         assertEquals(<span class="string">"New top URI should be null"</span>,
<a name="139" href="#139">139</a>                 <strong>null</strong>,hq.peek());
<a name="140" href="#140">140</a>         
<a name="141" href="#141">141</a>         hq.add(curis[1],false);
<a name="142" href="#142">142</a>         assertEquals(<span class="string">"Second CrawlURI should be top"</span>,curis[1].toString(),
<a name="143" href="#143">143</a>                 hq.peek().toString());
<a name="144" href="#144">144</a>         assertEquals(<span class="string">"Size of HQ should now be 2"</span>,2,hq.getSize());
<a name="145" href="#145">145</a> 
<a name="146" href="#146">146</a>         <em class="comment">// Return it with next fetch time in the future.</em>
<a name="147" href="#147">147</a>         curi.putLong(A_TIME_OF_NEXT_PROCESSING,
<a name="148" href="#148">148</a>             hq.peek().getLong(A_TIME_OF_NEXT_PROCESSING)
<a name="149" href="#149">149</a>                         +100000); <em class="comment">// 100 sec behind current top.</em>
<a name="150" href="#150">150</a>         hq.update(curi,false,0);
<a name="151" href="#151">151</a>         assertEquals(<span class="string">"Second CrawlURI should be still be top"</span>,
<a name="152" href="#152">152</a>                 curis[1].toString(),hq.peek().toString());
<a name="153" href="#153">153</a>         assertEquals(<span class="string">"Size of HQ should still be 2"</span>,2,hq.getSize());
<a name="154" href="#154">154</a>         
<a name="155" href="#155">155</a>         hq.add(curis[2],false);
<a name="156" href="#156">156</a>         assertEquals(<span class="string">"Second CrawlURI should still be top"</span>,
<a name="157" href="#157">157</a>                 curis[1].toString(), hq.peek().toString());
<a name="158" href="#158">158</a>         assertEquals(<span class="string">"Size of HQ should now be 3"</span>,3,hq.getSize());
<a name="159" href="#159">159</a> 
<a name="160" href="#160">160</a>         <em class="comment">/*</em>
<a name="161" href="#161">161</a> <em class="comment">         * If there are no URIs ready, the queue should snooze, even though no</em>
<a name="162" href="#162">162</a> <em class="comment">         * politeness demand has been made.</em>
<a name="163" href="#163">163</a> <em class="comment">         * &lt;p></em>
<a name="164" href="#164">164</a> <em class="comment">         * Confirms this and that it wakes up.</em>
<a name="165" href="#165">165</a> <em class="comment">         */</em>
<a name="166" href="#166">166</a>         assertTrue(<span class="string">"HQ should be snoozed, is "</span> + hq.getStateByName(),
<a name="167" href="#167">167</a>                 hq.getState()==AdaptiveRevisitHostQueue.HQSTATE_SNOOZED);
<a name="168" href="#168">168</a>         <em class="comment">// Wait past wakeup time        </em>
<a name="169" href="#169">169</a>         <strong>synchronized</strong>(<strong>this</strong>){
<a name="170" href="#170">170</a>             wait(hq.getNextReadyTime()-System.currentTimeMillis()+100);
<a name="171" href="#171">171</a>         }
<a name="172" href="#172">172</a>         assertTrue(<span class="string">"HQ should now be ready, is "</span> + hq.getStateByName(),
<a name="173" href="#173">173</a>                 hq.getState()==AdaptiveRevisitHostQueue.HQSTATE_READY);
<a name="174" href="#174">174</a>     
<a name="175" href="#175">175</a>         <em class="comment">/*</em>
<a name="176" href="#176">176</a> <em class="comment">         * Re-adds a URI with a lower ready time which should promote it to the</em>
<a name="177" href="#177">177</a> <em class="comment">         * top of the queue. Checks if this happens correctly.</em>
<a name="178" href="#178">178</a> <em class="comment">         * </em>
<a name="179" href="#179">179</a> <em class="comment">         * Then tests an add override which would demote it back, ensures that </em>
<a name="180" href="#180">180</a> <em class="comment">         * this fails as it should (i.e. URIs time of next processing remains </em>
<a name="181" href="#181">181</a> <em class="comment">         * unchanged).</em>
<a name="182" href="#182">182</a> <em class="comment">         */</em>
<a name="183" href="#183">183</a>         curis[2].putLong(
<a name="184" href="#184">184</a>                 A_TIME_OF_NEXT_PROCESSING,
<a name="185" href="#185">185</a>                 curis[1].getLong(A_TIME_OF_NEXT_PROCESSING)
<a name="186" href="#186">186</a>                             -1000); <em class="comment">// 1 sec. prior to current top </em>
<a name="187" href="#187">187</a>         hq.add(curis[2],<strong>true</strong>);
<a name="188" href="#188">188</a>         assertEquals(<span class="string">"Size of HQ should still be 3"</span>,hq.getSize(),3);
<a name="189" href="#189">189</a>         assertEquals(<span class="string">"Third CrawlURI should be now be top"</span>,
<a name="190" href="#190">190</a>                 curis[2].toString(), hq.peek().toString());
<a name="191" href="#191">191</a>         curis[2].putLong(A_TIME_OF_NEXT_PROCESSING,
<a name="192" href="#192">192</a>                 curis[1].getLong(A_TIME_OF_NEXT_PROCESSING)
<a name="193" href="#193">193</a>                             +10000); <em class="comment">// 10 sec. later </em>
<a name="194" href="#194">194</a>         hq.add(curis[2],<strong>true</strong>);
<a name="195" href="#195">195</a>         assertEquals(<span class="string">"Size of HQ should still be 3"</span>,hq.getSize(),3);
<a name="196" href="#196">196</a>         assertEquals(<span class="string">"Third CrawlURI should still top"</span>,
<a name="197" href="#197">197</a>                 curis[2].toString(), hq.peek().toString());
<a name="198" href="#198">198</a> 
<a name="199" href="#199">199</a>     
<a name="200" href="#200">200</a>         <em class="comment">/*</em>
<a name="201" href="#201">201</a> <em class="comment">         * Invoke next and ensure that the HQ is now busy (initial valence was</em>
<a name="202" href="#202">202</a> <em class="comment">         * set to 1). Also check for proper errors for a busy HQ. Such as when</em>
<a name="203" href="#203">203</a> <em class="comment">         * trying to reinvoke next().</em>
<a name="204" href="#204">204</a> <em class="comment">         *</em>
<a name="205" href="#205">205</a> <em class="comment">         */</em>
<a name="206" href="#206">206</a>         curi = hq.next(); <em class="comment">// Should return curis[2]</em>
<a name="207" href="#207">207</a>         assertEquals(<span class="string">"next() did not return 'top' URI"</span>,
<a name="208" href="#208">208</a>                 curis[2].toString(),curi.toString());
<a name="209" href="#209">209</a>         assertTrue(<span class="string">"HQ should now be busy, is "</span> + hq.getStateByName(),
<a name="210" href="#210">210</a>                 hq.getState()==AdaptiveRevisitHostQueue.HQSTATE_BUSY);
<a name="211" href="#211">211</a>         <strong>try</strong>{
<a name="212" href="#212">212</a>             hq.next();
<a name="213" href="#213">213</a>             assertTrue(<span class="string">"next() should throw an IllegalStateException if HQ "</span> +
<a name="214" href="#214">214</a>                     <span class="string">"not ready"</span>,false);
<a name="215" href="#215">215</a>         } <strong>catch</strong>(IllegalStateException e){
<a name="216" href="#216">216</a>             <em class="comment">// This is supposed to happen.</em>
<a name="217" href="#217">217</a>         }
<a name="218" href="#218">218</a>         assertEquals(<span class="string">"New top URI"</span>,
<a name="219" href="#219">219</a>                 curis[1].toString(),hq.peek().toString());
<a name="220" href="#220">220</a>         
<a name="221" href="#221">221</a>         <em class="comment">/*</em>
<a name="222" href="#222">222</a> <em class="comment">         * Add a URI while HQ is busy. Check if this succeeds normally.</em>
<a name="223" href="#223">223</a> <em class="comment">         *</em>
<a name="224" href="#224">224</a> <em class="comment">         */</em>
<a name="225" href="#225">225</a>         
<a name="226" href="#226">226</a>         curis[3].putLong(A_TIME_OF_NEXT_PROCESSING,
<a name="227" href="#227">227</a>                 curis[1].getLong(A_TIME_OF_NEXT_PROCESSING) 
<a name="228" href="#228">228</a>                         - 1); <em class="comment">// 1 msec. ahead of current top (order [2] 3 1 0) </em>
<a name="229" href="#229">229</a>         hq.add(curis[3],false);
<a name="230" href="#230">230</a>         assertEquals(<span class="string">"Size of HQ should now be 4"</span>,4,hq.getSize());
<a name="231" href="#231">231</a>         
<a name="232" href="#232">232</a>         
<a name="233" href="#233">233</a>         <em class="comment">/*</em>
<a name="234" href="#234">234</a> <em class="comment">         * Invoke update, first with an invalid URI (not the one issued by </em>
<a name="235" href="#235">235</a> <em class="comment">         * next() earlier), this should fail. Then with the correct one, this  </em>
<a name="236" href="#236">236</a> <em class="comment">         * should succeed. Then finally test update again with an invalid URI </em>
<a name="237" href="#237">237</a> <em class="comment">         * (i.e. when no HQ has no outstanding URIs, that should fail.</em>
<a name="238" href="#238">238</a> <em class="comment">         * </em>
<a name="239" href="#239">239</a> <em class="comment">         * At each step, proper checks are made of state and that  methods give  </em>
<a name="240" href="#240">240</a> <em class="comment">         * appropriate errors.</em>
<a name="241" href="#241">241</a> <em class="comment">         * </em>
<a name="242" href="#242">242</a> <em class="comment">         * Updated URI is given low time of next processing to put it 'in front'</em>
<a name="243" href="#243">243</a> <em class="comment">         */</em>