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<pre id='vimCodeElement'>
<span class="Comment"># Check our support for fake file systems in scenarios.</span>
<span class="muScenario">scenario</span> read-from-fake-file [
<span class="Constant">local-scope</span>
assume-resources [
<span class="Constant">[a]</span> <span class="Special"><-</span> [
<span class="Constant"> |xyz|</span>
]
]
contents:&:source:char <span class="Special"><-</span> start-reading resources, <span class="Constant">[a]</span>
1:char/<span class="Special">raw</span> <span class="Special"><-</span> read contents
2:char/<span class="Special">raw</span> <span class="Special"><-</span> read contents
3:char/<span class="Special">raw</span> <span class="Special"><-</span> read contents
4:char/<span class="Special">raw</span> <span class="Special"><-</span> read contents
_, 5:bool/<span class="Special">raw</span> <span class="Special"><-</span> read contents
memory-should-contain [
<span class="Constant"> 1</span> <span class="Special"><-</span><span class="Constant"> 120</span> <span class="Comment"># x</span>
<span class="Constant"> 2</span> <span class="Special"><-</span><span class="Constant"> 121</span> <span class="Comment"># y</span>
<span class="Constant"> 3</span> <span class="Special"><-</span><span class="Constant"> 122</span> <span class="Comment"># z</span>
<span class="Constant"> 4</span> <span class="Special"><-</span><span class="Constant"> 10</span> <span class="Comment"># newline</span>
<span class="Constant"> 5</span> <span class="Special"><-</span><span class="Constant"> 1</span> <span class="Comment"># eof</span>
]
]
<span class="muScenario">scenario</span> write-to-fake-file [
<span class="Constant">local-scope</span>
assume-resources [
]
sink:&:sink:char, writer:num/routine <span class="Special"><-</span> start-writing resources, <span class="Constant">[a]</span>
sink <span class="Special"><-</span> write sink, <span class="Constant">120/x</span>
sink <span class="Special"><-</span> write sink, <span class="Constant">121/y</span>
close sink
wait-for-routine writer
contents-read-back:text <span class="Special"><-</span> slurp resources, <span class="Constant">[a]</span>
10:bool/<span class="Special">raw</span> <span class="Special"><-</span> equal contents-read-back, <span class="Constant">[xy]</span>
memory-should-contain [
<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 class="muScenario">scenario</span> write-to-fake-file-that-exists [
<span class="Constant">local-scope</span>
assume-resources [
<span class="Constant">[a]</span> <span class="Special"><-</span> <span class="Constant">[]</span>
]
sink:&:sink:char, writer:num/routine <span class="Special"><-</span> start-writing resources, <span class="Constant">[a]</span>
sink <span class="Special"><-</span> write sink, <span class="Constant">120/x</span>
sink <span class="Special"><-</span> write sink, <span class="Constant">121/y</span>
close sink
wait-for-routine writer
contents-read-back:text <span class="Special"><-</span> slurp resources, <span class="Constant">[a]</span>
10:bool/<span class="Special">raw</span> <span class="Special"><-</span> equal contents-read-back, <span class="Constant">[xy]</span>
memory-should-contain [
<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 class="muScenario">scenario</span> write-to-existing-file-preserves-other-files [
<span class="Constant">local-scope</span>
assume-resources [
<span class="Constant">[a]</span> <span class="Special"><-</span> <span class="Constant">[]</span>
<span class="Constant">[b]</span> <span class="Special"><-</span> [
<span class="Constant"> |bcd|</span>
]
]
sink:&:sink:char, writer:num/routine <span class="Special"><-</span> start-writing resources, <span class="Constant">[a]</span>
sink <span class="Special"><-</span> write sink, <span class="Constant">120/x</span>
sink <span class="Special"><-</span> write sink, <span class="Constant">121/y</span>
close sink
wait-for-routine writer
contents-read-back:text <span class="Special"><-</span> slurp resources, <span class="Constant">[a]</span>
10:bool/<span class="Special">raw</span> <span class="Special"><-</span> equal contents-read-back, <span class="Constant">[xy]</span>
other-file-contents:text <span class="Special"><-</span> slurp resources, <span class="Constant">[b]</span>
11:bool/<span class="Special">raw</span> <span class="Special"><-</span> equal other-file-contents, <span class="Constant">[bcd</span>
<span class="Constant">]</span>
memory-should-contain [
<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 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 class="muRecipe">def</span> slurp resources:&:resources, filename:text<span class="muRecipe"> -> </span>contents:text [
<span class="Constant">local-scope</span>
<span class="Constant">load-ingredients</span>
source:&:source:char <span class="Special"><-</span> start-reading resources, filename
buf:&:buffer <span class="Special"><-</span> new-buffer <span class="Constant">30/capacity</span>
<span class="Delimiter">{</span>
c:char, done?:bool, source <span class="Special"><-</span> read source
<span class="muControl">break-if</span> done?
buf <span class="Special"><-</span> append buf, c
<span class="muControl">loop</span>
<span class="Delimiter">}</span>
contents <span class="Special"><-</span> buffer-to-array buf
]
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