recordingoutputstreamtest.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="132" href="#132">132</a>         verifyRecording(ros, f, WRITE_TOTAL);
<a name="133" href="#133">133</a>     }
<a name="134" href="#134">134</a> 
<a name="135" href="#135">135</a>     <em>/**<em>*</em></em>
<a name="136" href="#136">136</a> <em>     * Test mark and reset.</em>
<a name="137" href="#137">137</a> <em>     * @throws IOException</em>
<a name="138" href="#138">138</a> <em>     */</em>
<a name="139" href="#139">139</a>     <strong>public</strong> <strong>void</strong> testMarkReset() throws IOException
<a name="140" href="#140">140</a>     {
<a name="141" href="#141">141</a>         <strong>final</strong> String BASENAME = <span class="string">"testMarkReset"</span>;
<a name="142" href="#142">142</a>         cleanUpOldFiles(BASENAME);
<a name="143" href="#143">143</a>         <a href="../../../org/archive/io/RecordingOutputStream.html">RecordingOutputStream</a> ros = <strong>new</strong> <a href="../../../org/archive/io/RecordingOutputStream.html">RecordingOutputStream</a>(BUFFER_SIZE,
<a name="144" href="#144">144</a>                 (<strong>new</strong> File(getTmpDir(), BASENAME + <span class="string">"Backing.txt"</span>)).getAbsolutePath());
<a name="145" href="#145">145</a>         File f = writeByteRecordedFile(ros, BASENAME, WRITE_TOTAL);
<a name="146" href="#146">146</a>         verifyRecording(ros, f, WRITE_TOTAL);
<a name="147" href="#147">147</a>         <a href="../../../org/archive/io/ReplayInputStream.html">ReplayInputStream</a> ris = ros.getReplayInputStream();
<a name="148" href="#148">148</a>         ris.mark(10 <em class="comment">/*<em class="comment">Arbitrary value*/</em>);</em>
<a name="149" href="#149">149</a>         <em class="comment">// Read from the stream.</em>
<a name="150" href="#150">150</a>         ris.read();
<a name="151" href="#151">151</a>         ris.read();
<a name="152" href="#152">152</a>         ris.read();
<a name="153" href="#153">153</a>         <em class="comment">// Reset it.  It should be back at zero.</em>
<a name="154" href="#154">154</a>         ris.reset();
<a name="155" href="#155">155</a>         assertEquals(<span class="string">"Reset to zero"</span>, ris.read(), 0);
<a name="156" href="#156">156</a>         assertEquals(<span class="string">"Reset to zero char 1"</span>, ris.read(), 1);
<a name="157" href="#157">157</a>         assertEquals(<span class="string">"Reset to zero char 2"</span>, ris.read(), 2);
<a name="158" href="#158">158</a>         <em class="comment">// Mark stream.  Here.  Next character should be '3'.</em>
<a name="159" href="#159">159</a>         ris.mark(10 <em class="comment">/*<em class="comment"> Arbitrary value*/</em>);</em>
<a name="160" href="#160">160</a>         ris.read();
<a name="161" href="#161">161</a>         ris.read();
<a name="162" href="#162">162</a>         ris.reset();
<a name="163" href="#163">163</a>         assertEquals(<span class="string">"Reset to zero char 3"</span>, ris.read(), 3);
<a name="164" href="#164">164</a>     }
<a name="165" href="#165">165</a> 
<a name="166" href="#166">166</a>     <em>/**<em>*</em></em>
<a name="167" href="#167">167</a> <em>     * Record a file write.</em>
<a name="168" href="#168">168</a> <em>     *</em>
<a name="169" href="#169">169</a> <em>     * Write a file w/ characters that start at null and ascend to</em>
<a name="170" href="#170">170</a> <em>     * &lt;code>filesize&lt;/code>.  Record the writing w/ passed &lt;code>ros&lt;/code></em>
<a name="171" href="#171">171</a> <em>     * recordingoutputstream. Return the file recorded as result of method.</em>
<a name="172" href="#172">172</a> <em>     * The file  output stream that is recorded is named</em>
<a name="173" href="#173">173</a> <em>     * &lt;code>basename&lt;/code> + ".txt".</em>
<a name="174" href="#174">174</a> <em>     *</em>
<a name="175" href="#175">175</a> <em>     * &lt;p>This method writes a character at a time.</em>
<a name="176" href="#176">176</a> <em>     *</em>
<a name="177" href="#177">177</a> <em>     * @param ros RecordingOutputStream to record with.</em>
<a name="178" href="#178">178</a> <em>     * @param basename Basename of file.</em>
<a name="179" href="#179">179</a> <em>     * @param size How many characters to write.</em>
<a name="180" href="#180">180</a> <em>     * @return Recorded output stream.</em>
<a name="181" href="#181">181</a> <em>     */</em>
<a name="182" href="#182">182</a>     <strong>private</strong> File writeIntRecordedFile(<a href="../../../org/archive/io/RecordingOutputStream.html">RecordingOutputStream</a> ros,
<a name="183" href="#183">183</a>             String basename, <strong>int</strong> size)
<a name="184" href="#184">184</a>         throws IOException
<a name="185" href="#185">185</a>     {
<a name="186" href="#186">186</a>         File f = <strong>new</strong> File(getTmpDir(), basename + <span class="string">".txt"</span>);
<a name="187" href="#187">187</a>         FileOutputStream fos = <strong>new</strong> FileOutputStream(f);
<a name="188" href="#188">188</a>         ros.open(fos);
<a name="189" href="#189">189</a>         <strong>for</strong> (<strong>int</strong> i = 0; i &lt; WRITE_TOTAL; i++)
<a name="190" href="#190">190</a>         {
<a name="191" href="#191">191</a>             ros.write(i);
<a name="192" href="#192">192</a>         }
<a name="193" href="#193">193</a>         ros.close();
<a name="194" href="#194">194</a>         fos.close();
<a name="195" href="#195">195</a>         assertEquals(<span class="string">"Content-Length test"</span>, size,
<a name="196" href="#196">196</a>             ros.getResponseContentLength());
<a name="197" href="#197">197</a>         <strong>return</strong> f;
<a name="198" href="#198">198</a>     }
<a name="199" href="#199">199</a> 
<a name="200" href="#200">200</a>     <em>/**<em>*</em></em>
<a name="201" href="#201">201</a> <em>     * Record a file byte array write.</em>
<a name="202" href="#202">202</a> <em>     *</em>
<a name="203" href="#203">203</a> <em>     * Write a file w/ characters that start at null and ascend to</em>
<a name="204" href="#204">204</a> <em>     * &lt;code>filesize&lt;/code>.  Record the writing w/ passed &lt;code>ros&lt;/code></em>
<a name="205" href="#205">205</a> <em>     * recordingoutputstream. Return the file recorded as result of method.</em>
<a name="206" href="#206">206</a> <em>     * The file  output stream that is recorded is named</em>
<a name="207" href="#207">207</a> <em>     * &lt;code>basename&lt;/code> + ".txt".</em>
<a name="208" href="#208">208</a> <em>     *</em>
<a name="209" href="#209">209</a> <em>     * &lt;p>This method writes using a byte array.</em>
<a name="210" href="#210">210</a> <em>     *</em>
<a name="211" href="#211">211</a> <em>     * @param ros RecordingOutputStream to record with.</em>
<a name="212" href="#212">212</a> <em>     * @param basename Basename of file.</em>
<a name="213" href="#213">213</a> <em>     * @param size How many characters to write.</em>
<a name="214" href="#214">214</a> <em>     * @return Recorded output stream.</em>
<a name="215" href="#215">215</a> <em>     */</em>
<a name="216" href="#216">216</a>     <strong>private</strong> File writeByteRecordedFile(<a href="../../../org/archive/io/RecordingOutputStream.html">RecordingOutputStream</a> ros,
<a name="217" href="#217">217</a>             String basename, <strong>int</strong> size)
<a name="218" href="#218">218</a>     throws IOException
<a name="219" href="#219">219</a>     {
<a name="220" href="#220">220</a>         File f = <strong>new</strong> File(getTmpDir(), basename + <span class="string">".txt"</span>);
<a name="221" href="#221">221</a>         FileOutputStream fos = <strong>new</strong> FileOutputStream(f);
<a name="222" href="#222">222</a>         ros.open(fos);
<a name="223" href="#223">223</a>         byte [] b = <strong>new</strong> byte[size];
<a name="224" href="#224">224</a>         <strong>for</strong> (<strong>int</strong> i = 0; i &lt; size; i++)
<a name="225" href="#225">225</a>         {
<a name="226" href="#226">226</a>             b[i] = (byte)i;
<a name="227" href="#227">227</a>         }
<a name="228" href="#228">228</a>         ros.write(b);
<a name="229" href="#229">229</a>         ros.close();
<a name="230" href="#230">230</a>         fos.close();
<a name="231" href="#231">231</a>         assertEquals(<span class="string">"Content-Length test"</span>, size,
<a name="232" href="#232">232</a>                 ros.getResponseContentLength());
<a name="233" href="#233">233</a>         <strong>return</strong> f;
<a name="234" href="#234">234</a>     }
<a name="235" href="#235">235</a> 
<a name="236" href="#236">236</a>     <em>/**<em>*</em></em>
<a name="237" href="#237">237</a> <em>     * Verify what was written is both in the file written to and in the</em>
<a name="238" href="#238">238</a> <em>     * recording stream.</em>
<a name="239" href="#239">239</a> <em>     *</em>
<a name="240" href="#240">240</a> <em>     * @param ros Stream to check.</em>
<a name="241" href="#241">241</a> <em>     * @param f File that was recorded.  Stream should have its content</em>
<a name="242" href="#242">242</a> <em>     * exactly.</em>
<a name="243" href="#243">243</a> <em>     * @param size Amount of bytes written.</em>
<a name="244" href="#244">244</a> <em>     *</em>
<a name="245" href="#245">245</a> <em>     * @exception IOException Failure reading streams.</em>
<a name="246" href="#246">246</a> <em>     */</em>
<a name="247" href="#247">247</a>     <strong>private</strong> <strong>void</strong> verifyRecording(<a href="../../../org/archive/io/RecordingOutputStream.html">RecordingOutputStream</a> ros, File f,
<a name="248" href="#248">248</a>          <strong>int</strong> size) throws IOException
<a name="249" href="#249">249</a>     {
<a name="250" href="#250">250</a>         assertEquals(<span class="string">"Recorded file size."</span>, size, f.length());
<a name="251" href="#251">251</a>         FileInputStream fis = <strong>new</strong> FileInputStream(f);
<a name="252" href="#252">252</a>         assertNotNull(<span class="string">"FileInputStream not null"</span>, fis);
<a name="253" href="#253">253</a>         <a href="../../../org/archive/io/ReplayInputStream.html">ReplayInputStream</a> ris = ros.getReplayInputStream();
<a name="254" href="#254">254</a>         assertNotNull(<span class="string">"ReplayInputStream not null"</span>, ris);
<a name="255" href="#255">255</a>         <strong>for</strong> (<strong>int</strong> i = 0; i &lt; size; i++)
<a name="256" href="#256">256</a>         {
<a name="257" href="#257">257</a>             assertEquals(<span class="string">"ReplayInputStream content verification"</span>, i,
<a name="258" href="#258">258</a>                     ris.read());
<a name="259" href="#259">259</a>             assertEquals(<span class="string">"Recorded file content verification"</span>, i,
<a name="260" href="#260">260</a>                     fis.read());
<a name="261" href="#261">261</a>         }
<a name="262" href="#262">262</a>         assertEquals(<span class="string">"ReplayInputStream at EOF"</span>, -1, ris.read());
<a name="263" href="#263">263</a>         fis.close();
<a name="264" href="#264">264</a>         ris.close();
<a name="265" href="#265">265</a>     }
<a name="266" href="#266">266</a> }
</pre>
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