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<a href='https://github.com/akkartik/mu/blob/master/090scenario_filesystem_test.mu'>https://github.com/akkartik/mu/blob/master/090scenario_filesystem_test.mu</a>
<pre id='vimCodeElement'>
<span id="L1" class="LineNr"> 1 </span><span class="Comment"># Check our support for fake file systems in scenarios.</span>
<span id="L2" class="LineNr"> 2 </span>
<span id="L3" class="LineNr"> 3 </span><span class="muScenario">scenario</span> read-from-fake-file [
<span id="L4" class="LineNr"> 4 </span> <span class="Constant">local-scope</span>
<span id="L5" class="LineNr"> 5 </span> assume-resources [
<span id="L6" class="LineNr"> 6 </span> <span class="Constant">[a]</span> <span class="Special"><-</span> [
<span id="L7" class="LineNr"> 7 </span><span class="Constant"> |xyz|</span>
<span id="L8" class="LineNr"> 8 </span> ]
<span id="L9" class="LineNr"> 9 </span> ]
<span id="L10" class="LineNr">10 </span> contents:&:<a href='075channel.mu.html#L36'>source</a>:char <span class="Special"><-</span> <a href='088file.mu.html#L21'>start-reading</a> <a href='088file.mu.html#L11'>resources</a>, <span class="Constant">[a]</span>
<span id="L11" class="LineNr">11 </span> 1:char/<span class="Special">raw</span> <span class="Special"><-</span> read contents
<span id="L12" class="LineNr">12 </span> 2:char/<span class="Special">raw</span> <span class="Special"><-</span> read contents
<span id="L13" class="LineNr">13 </span> 3:char/<span class="Special">raw</span> <span class="Special"><-</span> read contents
<span id="L14" class="LineNr">14 </span> 4:char/<span class="Special">raw</span> <span class="Special"><-</span> read contents
<span id="L15" class="LineNr">15 </span> _, 5:bool/<span class="Special">raw</span> <span class="Special"><-</span> read contents
<span id="L16" class="LineNr">16 </span> memory-should-contain [
<span id="L17" class="LineNr">17 </span> <span class="Constant"> 1</span> <span class="Special"><-</span><span class="Constant"> 120</span> <span class="Comment"># x</span>
<span id="L18" class="LineNr">18 </span> <span class="Constant"> 2</span> <span class="Special"><-</span><span class="Constant"> 121</span> <span class="Comment"># y</span>
<span id="L19" class="LineNr">19 </span> <span class="Constant"> 3</span> <span class="Special"><-</span><span class="Constant"> 122</span> <span class="Comment"># z</span>
<span id="L20" class="LineNr">20 </span> <span class="Constant"> 4</span> <span class="Special"><-</span><span class="Constant"> 10</span> <span class="Comment"># newline</span>
<span id="L21" class="LineNr">21 </span> <span class="Constant"> 5</span> <span class="Special"><-</span><span class="Constant"> 1</span> <span class="Comment"># eof</span>
<span id="L22" class="LineNr">22 </span> ]
<span id="L23" class="LineNr">23 </span>]
<span id="L24" class="LineNr">24 </span>
<span id="L25" class="LineNr">25 </span><span class="muScenario">scenario</span> write-to-new-fake-file [
<span id="L26" class="LineNr">26 </span> <span class="Constant">local-scope</span>
<span id="L27" class="LineNr">27 </span> assume-resources [
<span id="L28" class="LineNr">28 </span> ]
<span id="L29" class="LineNr">29 </span> <a href='075channel.mu.html#L40'>sink</a>:&:<a href='075channel.mu.html#L40'>sink</a>:char, writer:num/routine <span class="Special"><-</span> <a href='088file.mu.html#L105'>start-writing</a> <a href='088file.mu.html#L11'>resources</a>, <span class="Constant">[a]</span>
<span id="L30" class="LineNr">30 </span> <a href='075channel.mu.html#L40'>sink</a> <span class="Special"><-</span> <a href='075channel.mu.html#L60'>write</a> <a href='075channel.mu.html#L40'>sink</a>, <span class="Constant">120/x</span>
<span id="L31" class="LineNr">31 </span> <a href='075channel.mu.html#L40'>sink</a> <span class="Special"><-</span> <a href='075channel.mu.html#L60'>write</a> <a href='075channel.mu.html#L40'>sink</a>, <span class="Constant">121/y</span>
<span id="L32" class="LineNr">32 </span> close <a href='075channel.mu.html#L40'>sink</a>
<span id="L33" class="LineNr">33 </span> wait-for-routine writer
<span id="L34" class="LineNr">34 </span> contents-read-back:text <span class="Special"><-</span> <a href='088file.mu.html#L38'>slurp</a> <a href='088file.mu.html#L11'>resources</a>, <span class="Constant">[a]</span>
<span id="L35" class="LineNr">35 </span> 10:bool/<span class="Special">raw</span> <span class="Special"><-</span> equal contents-read-back, <span class="Constant">[xy]</span>
<span id="L36" class="LineNr">36 </span> memory-should-contain [
<span id="L37" class="LineNr">37 </span> <span class="Constant"> 10</span> <span class="Special"><-</span><span class="Constant"> 1</span> <span class="Comment"># file contents read back exactly match what was written</span>
<span id="L38" class="LineNr">38 </span> ]
<span id="L39" class="LineNr">39 </span>]
<span id="L40" class="LineNr">40 </span>
<span id="L41" class="LineNr">41 </span><span class="muScenario">scenario</span> write-to-new-fake-file-2 [
<span id="L42" class="LineNr">42 </span> <span class="Constant">local-scope</span>
<span id="L43" class="LineNr">43 </span> assume-resources [
<span id="L44" class="LineNr">44 </span> <span class="Constant">[a]</span> <span class="Special"><-</span> [
<span id="L45" class="LineNr">45 </span><span class="Constant"> |abc|</span>
<span id="L46" class="LineNr">46 </span> ]
<span id="L47" class="LineNr">47 </span> ]
<span id="L48" class="LineNr">48 </span> <a href='075channel.mu.html#L40'>sink</a>:&:<a href='075channel.mu.html#L40'>sink</a>:char, writer:num/routine <span class="Special"><-</span> <a href='088file.mu.html#L105'>start-writing</a> <a href='088file.mu.html#L11'>resources</a>, <span class="Constant">[b]</span>
<span id="L49" class="LineNr">49 </span> <a href='075channel.mu.html#L40'>sink</a> <span class="Special"><-</span> <a href='075channel.mu.html#L60'>write</a> <a href='075channel.mu.html#L40'>sink</a>, <span class="Constant">120/x</span>
<span id="L50" class="LineNr">50 </span> <a href='075channel.mu.html#L40'>sink</a> <span class="Special"><-</span> <a href='075channel.mu.html#L60'>write</a> <a href='075channel.mu.html#L40'>sink</a>, <span class="Constant">121/y</span>
<span id="L51" class="LineNr">51 </span> close <a href='075channel.mu.html#L40'>sink</a>
<span id="L52" class="LineNr">52 </span> wait-for-routine writer
<span id="L53" class="LineNr">53 </span> contents-read-back:text <span class="Special"><-</span> <a href='088file.mu.html#L38'>slurp</a> <a href='088file.mu.html#L11'>resources</a>, <span class="Constant">[b]</span>
<span id="L54" class="LineNr">54 </span> 10:bool/<span class="Special">raw</span> <span class="Special"><-</span> equal contents-read-back, <span class="Constant">[xy]</span>
<span id="L55" class="LineNr">55 </span> memory-should-contain [
<span id="L56" class="LineNr">56 </span> <span class="Constant"> 10</span> <span class="Special"><-</span><span class="Constant"> 1</span> <span class="Comment"># file contents read back exactly match what was written</span>
<span id="L57" class="LineNr">57 </span> ]
<span id="L58" class="LineNr">58 </span>]
<span id="L59" class="LineNr">59 </span>
<span id="L60" class="LineNr">60 </span><span class="muScenario">scenario</span> write-to-fake-file-that-exists [
<span id="L61" class="LineNr">61 </span> <span class="Constant">local-scope</span>
<span id="L62" class="LineNr">62 </span> assume-resources [
<span id="L63" class="LineNr">63 </span> <span class="Constant">[a]</span> <span class="Special"><-</span> <span class="Constant">[]</span>
<span id="L64" class="LineNr">64 </span> ]
<span id="L65" class="LineNr">65 </span> <a href='075channel.mu.html#L40'>sink</a>:&:<a href='075channel.mu.html#L40'>sink</a>:char, writer:num/routine <span class="Special"><-</span> <a href='088file.mu.html#L105'>start-writing</a> <a href='088file.mu.html#L11'>resources</a>, <span class="Constant">[a]</span>
<span id="L66" class="LineNr">66 </span> <a href='075channel.mu.html#L40'>sink</a> <span class="Special"><-</span> <a href='075channel.mu.html#L60'>write</a> <a href='075channel.mu.html#L40'>sink</a>, <span class="Constant">120/x</span>
<span id="L67" class="LineNr">67 </span> <a href='075channel.mu.html#L40'>sink</a> <span class="Special"><-</span> <a href='075channel.mu.html#L60'>write</a> <a href='075channel.mu.html#L40'>sink</a>, <span class="Constant">121/y</span>
<span id="L68" class="LineNr">68 </span> close <a href='075channel.mu.html#L40'>sink</a>
<span id="L69" class="LineNr">69 </span> wait-for-routine writer
<span id="L70" class="LineNr">70 </span> contents-read-back:text <span class="Special"><-</span> <a href='088file.mu.html#L38'>slurp</a> <a href='088file.mu.html#L11'>resources</a>, <span class="Constant">[a]</span>
<span id="L71" class="LineNr">71 </span> 10:bool/<span class="Special">raw</span> <span class="Special"><-</span> equal contents-read-back, <span class="Constant">[xy]</span>
<span id="L72" class="LineNr">72 </span> memory-should-contain [
<span id="L73" class="LineNr">73 </span> <span class="Constant"> 10</span> <span class="Special"><-</span><span class="Constant"> 1</span> <span class="Comment"># file contents read back exactly match what was written</span>
<span id="L74" class="LineNr">74 </span> ]
<span id="L75" class="LineNr">75 </span>]
<span id="L76" class="LineNr">76 </span>
<span id="L77" class="LineNr">77 </span><span class="muScenario">scenario</span> write-to-existing-file-preserves-other-files [
<span id="L78" class="LineNr">78 </span> <span class="Constant">local-scope</span>
<span id="L79" class="LineNr">79 </span> assume-resources [
<span id="L80" class="LineNr">80 </span> <span class="Constant">[a]</span> <span class="Special"><-</span> <span class="Constant">[]</span>
<span id="L81" class="LineNr">81 </span> <span class="Constant">[b]</span> <span class="Special"><-</span> [
<span id="L82" class="LineNr">82 </span><span class="Constant"> |bcd|</span>
<span id="L83" class="LineNr">83 </span> ]
<span id="L84" class="LineNr">84 </span> ]
<span id="L85" class="LineNr">85 </span> <a href='075channel.mu.html#L40'>sink</a>:&:<a href='075channel.mu.html#L40'>sink</a>:char, writer:num/routine <span class="Special"><-</span> <a href='088file.mu.html#L105'>start-writing</a> <a href='088file.mu.html#L11'>resources</a>, <span class="Constant">[a]</span>
<span id="L86" class="LineNr">86 </span> <a href='075channel.mu.html#L40'>sink</a> <span class="Special"><-</span> <a href='075channel.mu.html#L60'>write</a> <a href='075channel.mu.html#L40'>sink</a>, <span class="Constant">120/x</span>
<span id="L87" class="LineNr">87 </span> <a href='075channel.mu.html#L40'>sink</a> <span class="Special"><-</span> <a href='075channel.mu.html#L60'>write</a> <a href='075channel.mu.html#L40'>sink</a>, <span class="Constant">121/y</span>
<span id="L88" class="LineNr">88 </span> close <a href='075channel.mu.html#L40'>sink</a>
<span id="L89" class="LineNr">89 </span> wait-for-routine writer
<span id="L90" class="LineNr">90 </span> contents-read-back:text <span class="Special"><-</span> <a href='088file.mu.html#L38'>slurp</a> <a href='088file.mu.html#L11'>resources</a>, <span class="Constant">[a]</span>
<span id="L91" class="LineNr">91 </span> 10:bool/<span class="Special">raw</span> <span class="Special"><-</span> equal contents-read-back, <span class="Constant">[xy]</span>
<span id="L92" class="LineNr">92 </span> other-file-contents:text <span class="Special"><-</span> <a href='088file.mu.html#L38'>slurp</a> <a href='088file.mu.html#L11'>resources</a>, <span class="Constant">[b]</span>
<span id="L93" class="LineNr">93 </span> 11:bool/<span class="Special">raw</span> <span class="Special"><-</span> equal other-file-contents, <span class="Constant">[bcd</span>
<span id="L94" class="LineNr">94 </span><span class="Constant">]</span>
<span id="L95" class="LineNr">95 </span> memory-should-contain [
<span id="L96" class="LineNr">96 </span> <span class="Constant"> 10</span> <span class="Special"><-</span><span class="Constant"> 1</span> <span class="Comment"># file contents read back exactly match what was written</span>
<span id="L97" class="LineNr">97 </span> <span class="Constant"> 11</span> <span class="Special"><-</span><span class="Constant"> 1</span> <span class="Comment"># other files also continue to persist unchanged</span>
<span id="L98" class="LineNr">98 </span> ]
<span id="L99" class="LineNr">99 </span>]
</pre>
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