summary refs log blame commit diff stats
path: root/doc/pydoc/ranger.fsobject.html
blob: 7014418a13bbed1374b0033777bcb1c05b785d37 (plain) (tree)
1
2
3
4
5
6
7
8
9
10
 

                                                              






                                                                                                                                                                                
                                                                                                                                                                                                             




















                                                                                                                                             
                                                                                                                                                                    









                                                                                              
                                                                                                                                                                                           



                                                                         


                                                                             






                                                                                                            
                                                                                        


                                                                                                                                                                                                                                             
                                                                                                          
                                                                                                                                                                                                                                                                   

    
                                                                                                



                                                                                                                                                                                                                         





                                                                                                                                                                                                 









                                                                                                                                                                                                                                   
                                                                                          

    
                                                                                                         

                                      

                                  

                                     






                                                                                               
                                                    




                                                        
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html><head><title>Python: package ranger.fsobject</title>
</head><body bgcolor="#f0f0f8">

<table width="100%" cellspacing=0 cellpadding=2 border=0 summary="heading">
<tr bgcolor="#7799ee">
<td valign=bottom>&nbsp;<br>
<font color="#ffffff" face="helvetica, arial">&nbsp;<br><big><big><strong><a href="ranger.html"><font color="#ffffff">ranger</font></a>.fsobject</strong></big></big></font></td
><td align=right valign=bottom
><font color="#ffffff" face="helvetica, arial"><a href=".">index</a><br><a href="file:/home/hut/ranger/ranger/fsobject/__init__.py">/home/hut/ranger/ranger/fsobject/__init__.py</a></font></td></tr></table>
    <p><tt>FileSystemObjects&nbsp;are&nbsp;representation&nbsp;of&nbsp;files&nbsp;and&nbsp;directories<br>
with&nbsp;fast&nbsp;access&nbsp;to&nbsp;their&nbsp;properties&nbsp;through&nbsp;caching</tt></p>
<p>
<table width="100%" cellspacing=0 cellpadding=2 border=0 summary="section">
<tr bgcolor="#aa55cc">
<td colspan=3 valign=bottom>&nbsp;<br>
<font color="#ffffff" face="helvetica, arial"><big><strong>Package Contents</strong></big></font></td></tr>
    
<tr><td bgcolor="#aa55cc"><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</tt></td><td>&nbsp;</td>
<td width="100%"><table width="100%" summary="list"><tr><td width="25%" valign=top><a href="ranger.fsobject.directory.html">directory</a><br>
</td><td width="25%" valign=top><a href="ranger.fsobject.file.html">file</a><br>
</td><td width="25%" valign=top><a href="ranger.fsobject.fsobject.html">fsobject</a><br>
</td><td width="25%" valign=top><a href="ranger.fsobject.loader.html">loader</a><br>
</td></tr></table></td></tr></table><p>
<table width="100%" cellspacing=0 cellpadding=2 border=0 summary="section">
<tr bgcolor="#ee77aa">
<td colspan=3 valign=bottom>&nbsp;<br>
<font color="#ffffff" face="helvetica, arial"><big><strong>Classes</strong></big></font></td></tr>
    
<tr><td bgcolor="#ee77aa"><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</tt></td><td>&nbsp;</td>
<td width="100%"><dl>
<dt><font face="helvetica, arial"><a href="exceptions.html#Exception">exceptions.Exception</a>(<a href="exceptions.html#BaseException">exceptions.BaseException</a>)
</font></dt><dd>
<dl>
<dt><font face="helvetica, arial"><a href="ranger.fsobject.html#NotLoadedYet">NotLoadedYet</a>
</font></dt></dl>
</dd>
</dl>
 <p>
<table width="100%" cellspacing=0 cellpadding=2 border=0 summary="section">
<tr bgcolor="#ffc8d8">
<td colspan=3 valign=bottom>&nbsp;<br>
<font color="#000000" face="helvetica, arial"><a name="NotLoadedYet">class <strong>NotLoadedYet</strong></a>(<a href="exceptions.html#Exception">exceptions.Exception</a>)</font></td></tr>
    
<tr><td bgcolor="#ffc8d8"><tt>&nbsp;&nbsp;&nbsp;</tt></td><td>&nbsp;</td>
<td width="100%"><dl><dt>Method resolution order:</dt>
<dd><a href="ranger.fsobject.html#NotLoadedYet">NotLoadedYet</a></dd>
<dd><a href="exceptions.html#Exception">exceptions.Exception</a></dd>
<dd><a href="exceptions.html#BaseException">exceptions.BaseException</a></dd>
<dd><a href="__builtin__.html#object">__builtin__.object</a></dd>
</dl>
<hr>
Data descriptors defined here:<br>
<dl><dt><strong>__weakref__</strong></dt>
<dd><tt>list&nbsp;of&nbsp;weak&nbsp;references&nbsp;to&nbsp;the&nbsp;object&nbsp;(if&nbsp;defined)</tt></dd>
</dl>
<hr>
Methods inherited from <a href="exceptions.html#Exception">exceptions.Exception</a>:<br>
<dl><dt><a name="NotLoadedYet-__init__"><strong>__init__</strong></a>(...)</dt><dd><tt>x.<a href="#NotLoadedYet-__init__">__init__</a>(...)&nbsp;initializes&nbsp;x;&nbsp;see&nbsp;x.__class__.__doc__&nbsp;for&nbsp;signature</tt></dd></dl>

<hr>
Data and other attributes inherited from <a href="exceptions.html#Exception">exceptions.Exception</a>:<br>
<dl><dt><strong>__new__</strong> = &lt;built-in method __new__ of type object&gt;<dd><tt>T.<a href="#NotLoadedYet-__new__">__new__</a>(S,&nbsp;...)&nbsp;-&gt;&nbsp;a&nbsp;new&nbsp;object&nbsp;with&nbsp;type&nbsp;S,&nbsp;a&nbsp;subtype&nbsp;of&nbsp;T</tt></dl>

<hr>
Methods inherited from <a href="exceptions.html#BaseException">exceptions.BaseException</a>:<br>
<dl><dt><a name="NotLoadedYet-__delattr__"><strong>__delattr__</strong></a>(...)</dt><dd><tt>x.<a href="#NotLoadedYet-__delattr__">__delattr__</a>('name')&nbsp;&lt;==&gt;&nbsp;del&nbsp;x.name</tt></dd></dl>

<dl><dt><a name="NotLoadedYet-__getattribute__"><strong>__getattribute__</strong></a>(...)</dt><dd><tt>x.<a href="#NotLoadedYet-__getattribute__">__getattribute__</a>('name')&nbsp;&lt;==&gt;&nbsp;x.name</tt></dd></dl>

<dl><dt><a name="NotLoadedYet-__getitem__"><strong>__getitem__</strong></a>(...)</dt><dd><tt>x.<a href="#NotLoadedYet-__getitem__">__getitem__</a>(y)&nbsp;&lt;==&gt;&nbsp;x[y]</tt></dd></dl>

<dl><dt><a name="NotLoadedYet-__getslice__"><strong>__getslice__</strong></a>(...)</dt><dd><tt>x.<a href="#NotLoadedYet-__getslice__">__getslice__</a>(i,&nbsp;j)&nbsp;&lt;==&gt;&nbsp;x[i:j]<br>
&nbsp;<br>
Use&nbsp;of&nbsp;negative&nbsp;indices&nbsp;is&nbsp;not&nbsp;supported.</tt></dd></dl>

<dl><dt><a name="NotLoadedYet-__reduce__"><strong>__reduce__</strong></a>(...)</dt></dl>

<dl><dt><a name="NotLoadedYet-__repr__"><strong>__repr__</strong></a>(...)</dt><dd><tt>x.<a href="#NotLoadedYet-__repr__">__repr__</a>()&nbsp;&lt;==&gt;&nbsp;repr(x)</tt></dd></dl>

<dl><dt><a name="NotLoadedYet-__setattr__"><strong>__setattr__</strong></a>(...)</dt><dd><tt>x.<a href="#NotLoadedYet-__setattr__">__setattr__</a>('name',&nbsp;value)&nbsp;&lt;==&gt;&nbsp;x.name&nbsp;=&nbsp;value</tt></dd></dl>

<dl><dt><a name="NotLoadedYet-__setstate__"><strong>__setstate__</strong></a>(...)</dt></dl>

<dl><dt><a name="NotLoadedYet-__str__"><strong>__str__</strong></a>(...)</dt><dd><tt>x.<a href="#NotLoadedYet-__str__">__str__</a>()&nbsp;&lt;==&gt;&nbsp;str(x)</tt></dd></dl>

<dl><dt><a name="NotLoadedYet-__unicode__"><strong>__unicode__</strong></a>(...)</dt></dl>

<hr>
Data descriptors inherited from <a href="exceptions.html#BaseException">exceptions.BaseException</a>:<br>
<dl><dt><strong>__dict__</strong></dt>
</dl>
<dl><dt><strong>args</strong></dt>
</dl>
<dl><dt><strong>message</strong></dt>
</dl>
</td></tr></table></td></tr></table><p>
<table width="100%" cellspacing=0 cellpadding=2 border=0 summary="section">
<tr bgcolor="#55aa55">
<td colspan=3 valign=bottom>&nbsp;<br>
<font color="#ffffff" face="helvetica, arial"><big><strong>Data</strong></big></font></td></tr>
    
<tr><td bgcolor="#55aa55"><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</tt></td><td>&nbsp;</td>
<td width="100%"><strong>BAD_INFO</strong> = '?'<br>
<strong>T_DIRECTORY</strong> = 'directory'<br>
<strong>T_FILE</strong> = 'file'<br>
<strong>T_NONEXISTANT</strong> = 'nonexistant'<br>
<strong>T_UNKNOWN</strong> = 'unknown'</td></tr></table>
</body></html>
189 190 191 192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379

                                                
                   



                                             

                                                
                   
                    



                                                                     

 
                                              
                                                

                           


                                                             
                                                        
                               

                            
              
                                        
                            


                                                                             









                                                                                                               

                                                  

                            
              
                                       
                            



                                                                             

                                                 
                   






                                                                   
                   




                                                                       







                                                                            

                                               
                   





                                               
                   





                                                 
                   






                                                 
                   






                                                   
                   





                                                        
                   







                                                 
                   






                                                               
                   







                                                                              
                   




                                              

                                                                  
                   



                                                 

                                                                       
                   



                                                 





                                                                                
                   
                    

                                                                                      


                                                                                                                


                       



                                                                                    

                                                                                      





                                                                                                                






                                                                                  

                                                                                    
                   
                    

                                                                                      


                                                                                                    





                                              
                                                   
                                                                                                         
                   
                    

                                                                                      



                                                                                                                


                       



                                                                                                         

                                                                                      






                                                                                                                

                                                                                        
                   
                    

                                                                                      


                                                                                                                        




                                                                                  
                   
                    

                                                                                      


                                                                                                                     




                                                                                        
                   
                    

                                                                                      


                                                                                                                     




                                                                                           
                   
                    

                                                                                      




                                                                                                                     




                                                                                       
                   
                    

                                                                                      



                                                                                                         




                                                                                       
                   
                    

                                                                                      



                                                                                                         


                       



                                                                       

                                                                                      





                                                                                                  



                                                                                                                                                                                                                                                                        

                                                                                      
                                                                                                                               






                                                                                                                




































                                          
void test_tangle() {
  istringstream in("a\nb\nc\n:(before b)\nd\n");
  list<Line> dummy;
  tangle(in, dummy);
  CHECK_TRACE_CONTENTS("tangle", "adbc");
}

void test_tangle_with_linenumber() {
  istringstream in("a\nb\nc\n:(before b)\nd\n");
  list<Line> dummy;
  tangle(in, dummy);
  CHECK_TRACE_CONTENTS("tangle", "#line 1a#line 5d#line 2bc");
  // no other #line directives
  CHECK_TRACE_DOESNT_CONTAIN("tangle", "#line 3");
  CHECK_TRACE_DOESNT_CONTAIN("tangle", "#line 4");
}

void test_tangle_linenumbers_with_filename() {
  istringstream in("a\nb\nc\n:(before b)\nd\n");
  list<Line> dummy;
  tangle(in, "foo", dummy);
  CHECK_TRACE_CONTENTS("tangle", "a#line 5 \"foo\"dbc");
}

void test_tangle_linenumbers_with_multiple_filenames() {
  istringstream in1("a\nb\nc");
  list<Line> dummy;
  tangle(in1, "foo", dummy);
  CLEAR_TRACE;
  istringstream in2(":(before b)\nd\n");
  tangle(in2, "bar", dummy);
  CHECK_TRACE_CONTENTS("tangle", "a#line 2 \"bar\"d#line 2 \"foo\"bc");
}

void test_tangle_linenumbers_with_multiple_directives() {
  istringstream in1("a\nb\nc");
  list<Line> dummy;
  tangle(in1, "foo", dummy);
  CLEAR_TRACE;
  istringstream in2(":(before b)\nd\n:(before c)\ne");
  tangle(in2, "bar", dummy);
  CHECK_TRACE_CONTENTS("tangle", "a#line 2 \"bar\"d#line 2 \"foo\"b#line 4 \"bar\"e#line 3 \"foo\"c");
}

void test_tangle_with_multiple_filenames_after() {
  istringstream in1("a\nb\nc");
  list<Line> dummy;
  tangle(in1, "foo", dummy);
  CLEAR_TRACE;
  istringstream in2(":(after b)\nd\n");
  tangle(in2, "bar", dummy);
  CHECK_TRACE_CONTENTS("tangle", "ab#line 2 \"bar\"d#line 3 \"foo\"c");
//?   exit(0); //? 1
}

void test_tangle_skip_tanglecomments() {
  istringstream in("a\nb\nc\n//: 1\n//: 2\nd\n");
  list<Line> dummy;
  tangle(in, dummy);
  CHECK_TRACE_CONTENTS("tangle", "abcd");
  CHECK_TRACE_DOESNT_CONTAIN("tangle", "//: 1");
}

void test_tangle_with_tanglecomments_and_directive() {
  istringstream in("a\n//: 1\nb\nc\n:(before b)\nd\n:(code)\ne\n");
  list<Line> dummy;
  tangle(in, dummy);
  CHECK_TRACE_CONTENTS("tangle", "a#line 6d#line 3bc#line 8e");
  CHECK_TRACE_DOESNT_CONTAIN("tangle", "//: 1");
}

void test_tangle_with_tanglecomments_inside_directive() {
  istringstream in("a\n//: 1\nb\nc\n:(before b)\n//: abc\nd\n:(code)\ne\n");
  list<Line> dummy;
  tangle(in, dummy);
  CHECK_TRACE_CONTENTS("tangle", "a#line 7d#line 3bc#line 9e");
  CHECK_TRACE_DOESNT_CONTAIN("tangle", "//: 1");
}

void test_tangle2() {
  istringstream in("a\nb\nc\n:(after b)\nd\n");
  list<Line> dummy;
  tangle(in, dummy);
  CHECK_TRACE_CONTENTS("tangle", "abdc");
}

void test_tangle_at_end() {
  istringstream in("a\nb\nc\n:(after c)\nd\n");
  list<Line> dummy;
  tangle(in, dummy);
  CHECK_TRACE_CONTENTS("tangle", "abcd");
}

void test_tangle_indents_hunks_correctly() {
  istringstream in("a\n  b\nc\n:(after b)\nd\n");
  list<Line> dummy;
  tangle(in, dummy);
  CHECK_TRACE_CONTENTS("tangle", "a  b  dc");
}

void test_tangle_warns_on_missing_target() {
  Hide_warnings = true;
  istringstream in(":(before)\nabc def\n");
  list<Line> lines;
  tangle(in, lines);
  CHECK_TRACE_WARNS();
}

void test_tangle_warns_on_unknown_target() {
  Hide_warnings = true;
  istringstream in(":(before \"foo\")\nabc def\n");
  list<Line> lines;
  tangle(in, lines);
  CHECK_TRACE_WARNS();
}

void test_tangle_delete_range_of_lines() {
  istringstream in("a\nb {\nc\n}\n:(delete{} \"b\")\n");
  list<Line> dummy;
  tangle(in, dummy);
  CHECK_TRACE_CONTENTS("tangle", "a");
  CHECK_TRACE_DOESNT_CONTAIN("tangle", "b");
  CHECK_TRACE_DOESNT_CONTAIN("tangle", "c");
}

void test_tangle_replace() {
  istringstream in("a\nb\nc\n:(replace b)\nd\n");
  list<Line> dummy;
  tangle(in, dummy);
  CHECK_TRACE_CONTENTS("tangle", "adc");
  CHECK_TRACE_DOESNT_CONTAIN("tangle", "b");
}

void test_tangle_replace_range_of_lines() {
  istringstream in("a\nb {\nc\n}\n:(replace{} \"b\")\nd\ne\n");
  list<Line> dummy;
  tangle(in, dummy);
  CHECK_TRACE_CONTENTS("tangle", "ade");
  CHECK_TRACE_DOESNT_CONTAIN("tangle", "b {");
  CHECK_TRACE_DOESNT_CONTAIN("tangle", "c");
}

void test_tangle_replace_tracks_old_lines() {
  istringstream in("a\nb {\nc\n}\n:(replace{} \"b\")\nd\n:OLD_CONTENTS\ne\n");
  list<Line> dummy;
  tangle(in, dummy);
  CHECK_TRACE_CONTENTS("tangle", "adce");
  CHECK_TRACE_DOESNT_CONTAIN("tangle", "b {");
}

void test_tangle_nested_patterns() {
  istringstream in("a\nc\nb\nc\nd\n:(after \"b\" then \"c\")\ne");
  list<Line> dummy;
  tangle(in, dummy);
  CHECK_TRACE_CONTENTS("tangle", "acbced");
}

void test_tangle_nested_patterns2() {
  istringstream in("a\nc\nb\nc\nd\n:(after \"c\" following \"b\")\ne");
  list<Line> dummy;
  tangle(in, dummy);
  CHECK_TRACE_CONTENTS("tangle", "acbced");
}

// todo: include line numbers in tangle errors



void test_tangle_supports_scenarios() {
  istringstream in(":(scenario does_bar)\nabc def\n+layer1: pqr\n+layer2: xyz");
  list<Line> lines;
  tangle(in, lines);
  CHECK_EQ(lines.front().contents, "void test_does_bar() {");  lines.pop_front();
  CHECK_EQ(lines.front().contents, "  Trace_file = \"does_bar\";"); lines.pop_front();
  CHECK_EQ(lines.front().contents, "  run(\"abc def\\n\");");  lines.pop_front();
  CHECK_EQ(lines.front().contents, "  CHECK_TRACE_CONTENTS(\"layer1: pqrlayer2: xyz\");");  lines.pop_front();
  CHECK_EQ(lines.front().contents, "}");  lines.pop_front();
  CHECK(lines.empty());
}

void test_tangle_ignores_empty_lines_in_scenarios() {
  istringstream in(":(scenario does_bar)\nabc def\n+layer1: pqr\n  \n+layer2: xyz");
  list<Line> lines;
  tangle(in, lines);
  CHECK_EQ(lines.front().contents, "void test_does_bar() {");  lines.pop_front();
  CHECK_EQ(lines.front().contents, "  Trace_file = \"does_bar\";"); lines.pop_front();
  CHECK_EQ(lines.front().contents, "  run(\"abc def\\n\");");  lines.pop_front();
  CHECK_EQ(lines.front().contents, "  CHECK_TRACE_CONTENTS(\"layer1: pqrlayer2: xyz\");");  lines.pop_front();
  CHECK_EQ(lines.front().contents, "}");  lines.pop_front();
  CHECK(lines.empty());
}

void test_tangle_handles_empty_lines_in_scenarios() {
  istringstream in(":(scenario does_bar)\nabc def\n\n+layer1: pqr\n+layer2: xyz");
  list<Line> lines;
  tangle(in, lines);
  // no infinite loop
}

void test_tangle_supports_configurable_toplevel() {
  istringstream in(":(scenarios foo)\n:(scenario does_bar)\nabc def\n+layer1: pqr");
  list<Line> lines;
  tangle(in, lines);
  CHECK_EQ(lines.front().contents, "void test_does_bar() {");  lines.pop_front();
  CHECK_EQ(lines.front().contents, "  Trace_file = \"does_bar\";"); lines.pop_front();
  CHECK_EQ(lines.front().contents, "  foo(\"abc def\\n\");");  lines.pop_front();
  CHECK_EQ(lines.front().contents, "  CHECK_TRACE_CONTENTS(\"layer1: pqr\");");  lines.pop_front();
  CHECK_EQ(lines.front().contents, "}");  lines.pop_front();
  CHECK(lines.empty());

  istringstream cleanup(":(scenarios run)\n");
  tangle(cleanup, lines);
}

void test_tangle_can_hide_warnings_in_scenarios() {
  istringstream in(":(scenario does_bar)\n% Hide_warnings = true;\nabc def\n+layer1: pqr\n+layer2: xyz");
  list<Line> lines;
  tangle(in, lines);
  CHECK_EQ(lines.front().contents, "void test_does_bar() {");  lines.pop_front();
  CHECK_EQ(lines.front().contents, "  Trace_file = \"does_bar\";"); lines.pop_front();
  CHECK_EQ(lines.front().contents, "  Hide_warnings = true;");  lines.pop_front();
  CHECK_EQ(lines.front().contents, "  run(\"abc def\\n\");");  lines.pop_front();
  CHECK_EQ(lines.front().contents, "  CHECK_TRACE_CONTENTS(\"layer1: pqrlayer2: xyz\");");  lines.pop_front();
  CHECK_EQ(lines.front().contents, "}");  lines.pop_front();
  CHECK(lines.empty());
}

void test_tangle_can_handle_in_scenarios() {
  istringstream in(":(scenario does_bar)\n% Hide_warnings = true;\nabc def\n+layer1: pqr\n+layer2: xyz");
  list<Line> lines;
  tangle(in, lines);
  CHECK_EQ(lines.front().contents, "void test_does_bar() {");  lines.pop_front();
  CHECK_EQ(lines.front().contents, "  Trace_file = \"does_bar\";"); lines.pop_front();
  CHECK_EQ(lines.front().contents, "  Hide_warnings = true;");  lines.pop_front();
  CHECK_EQ(lines.front().contents, "  run(\"abc def\\n\");");  lines.pop_front();
  CHECK_EQ(lines.front().contents, "  CHECK_TRACE_CONTENTS(\"layer1: pqrlayer2: xyz\");");  lines.pop_front();
  CHECK_EQ(lines.front().contents, "}");  lines.pop_front();
  CHECK(lines.empty());
}

void test_tangle_supports_strings_in_scenarios() {
  istringstream in(":(scenario does_bar)\nabc \"def\"\n+layer1: pqr\n+layer2: \"xyz\"");
  list<Line> lines;
  tangle(in, lines);
  CHECK_EQ(lines.front().contents, "void test_does_bar() {");  lines.pop_front();
  CHECK_EQ(lines.front().contents, "  Trace_file = \"does_bar\";"); lines.pop_front();
  CHECK_EQ(lines.front().contents, "  run(\"abc \\\"def\\\"\\n\");");  lines.pop_front();
  CHECK_EQ(lines.front().contents, "  CHECK_TRACE_CONTENTS(\"layer1: pqrlayer2: \\\"xyz\\\"\");");  lines.pop_front();
  CHECK_EQ(lines.front().contents, "}");  lines.pop_front();
  CHECK(lines.empty());
}

void test_tangle_supports_strings_in_scenarios2() {
  istringstream in(":(scenario does_bar)\nabc \"\"\n+layer1: pqr\n+layer2: \"\"");
  list<Line> lines;
  tangle(in, lines);
  CHECK_EQ(lines.front().contents, "void test_does_bar() {");  lines.pop_front();
  CHECK_EQ(lines.front().contents, "  Trace_file = \"does_bar\";"); lines.pop_front();
  CHECK_EQ(lines.front().contents, "  run(\"abc \\\"\\\"\\n\");");  lines.pop_front();
  CHECK_EQ(lines.front().contents, "  CHECK_TRACE_CONTENTS(\"layer1: pqrlayer2: \\\"\\\"\");");  lines.pop_front();
  CHECK_EQ(lines.front().contents, "}");  lines.pop_front();
  CHECK(lines.empty());
}

void test_tangle_supports_multiline_input_in_scenarios() {
  istringstream in(":(scenario does_bar)\nabc def\n  efg\n+layer1: pqr\n+layer2: \"\"");
  list<Line> lines;
  tangle(in, lines);
  CHECK_EQ(lines.front().contents, "void test_does_bar() {");  lines.pop_front();
  CHECK_EQ(lines.front().contents, "  Trace_file = \"does_bar\";"); lines.pop_front();
  CHECK_EQ(lines.front().contents, "  run(\"abc def\\n  efg\\n\");");  lines.pop_front();
  CHECK_EQ(lines.front().contents, "  CHECK_TRACE_CONTENTS(\"layer1: pqrlayer2: \\\"\\\"\");");  lines.pop_front();
  CHECK_EQ(lines.front().contents, "}");  lines.pop_front();
  CHECK(lines.empty());
}

void test_tangle_supports_reset_in_scenarios() {
  istringstream in(":(scenario does_bar)\nabc def\n===\nefg\n+layer1: pqr\n+layer2: \"\"");
  list<Line> lines;
  tangle(in, lines);
  CHECK_EQ(lines.front().contents, "void test_does_bar() {");  lines.pop_front();
  CHECK_EQ(lines.front().contents, "  Trace_file = \"does_bar\";"); lines.pop_front();
  CHECK_EQ(lines.front().contents, "  run(\"abc def\\n\");");  lines.pop_front();
  CHECK_EQ(lines.front().contents, "  CLEAR_TRACE;");  lines.pop_front();
  CHECK_EQ(lines.front().contents, "  run(\"efg\\n\");");  lines.pop_front();
  CHECK_EQ(lines.front().contents, "  CHECK_TRACE_CONTENTS(\"layer1: pqrlayer2: \\\"\\\"\");");  lines.pop_front();
  CHECK_EQ(lines.front().contents, "}");  lines.pop_front();
  CHECK(lines.empty());
}

void test_tangle_can_check_for_absence_at_end_of_scenarios() {
  istringstream in(":(scenario does_bar)\nabc def\n  efg\n+layer1: pqr\n-layer1: xyz");
  list<Line> lines;
  tangle(in, lines);
  CHECK_EQ(lines.front().contents, "void test_does_bar() {");  lines.pop_front();
  CHECK_EQ(lines.front().contents, "  Trace_file = \"does_bar\";"); lines.pop_front();
  CHECK_EQ(lines.front().contents, "  run(\"abc def\\n  efg\\n\");");  lines.pop_front();
  CHECK_EQ(lines.front().contents, "  CHECK_TRACE_CONTENTS(\"layer1: pqr\");");  lines.pop_front();
  CHECK_EQ(lines.front().contents, "  CHECK_TRACE_DOESNT_CONTAIN(\"layer1: xyz\");");  lines.pop_front();
  CHECK_EQ(lines.front().contents, "}");  lines.pop_front();
  CHECK(lines.empty());
}

void test_tangle_can_check_for_absence_at_end_of_scenarios2() {
  istringstream in(":(scenario does_bar)\nabc def\n  efg\n-layer1: pqr\n-layer1: xyz");
  list<Line> lines;
  tangle(in, lines);
  CHECK_EQ(lines.front().contents, "void test_does_bar() {");  lines.pop_front();
  CHECK_EQ(lines.front().contents, "  Trace_file = \"does_bar\";"); lines.pop_front();
  CHECK_EQ(lines.front().contents, "  run(\"abc def\\n  efg\\n\");");  lines.pop_front();
  CHECK_EQ(lines.front().contents, "  CHECK_TRACE_DOESNT_CONTAIN(\"layer1: pqr\");");  lines.pop_front();
  CHECK_EQ(lines.front().contents, "  CHECK_TRACE_DOESNT_CONTAIN(\"layer1: xyz\");");  lines.pop_front();
  CHECK_EQ(lines.front().contents, "}");  lines.pop_front();
  CHECK(lines.empty());
}

void test_tangle_can_check_for_count_in_scenario() {
  istringstream in(":(scenario does_bar)\nabc def\n  efg\n$layer1: 2");
  list<Line> lines;
  tangle(in, lines);
  CHECK_EQ(lines.front().contents, "void test_does_bar() {");  lines.pop_front();
  CHECK_EQ(lines.front().contents, "  Trace_file = \"does_bar\";"); lines.pop_front();
  CHECK_EQ(lines.front().contents, "  run(\"abc def\\n  efg\\n\");");  lines.pop_front();
  CHECK_EQ(lines.front().contents, "  CHECK_EQ(trace_count(\"layer1\"), 2);");  lines.pop_front();
  CHECK_EQ(lines.front().contents, "}");  lines.pop_front();
  CHECK(lines.empty());
}

void test_tangle_can_handle_mu_comments_in_scenario() {
  istringstream in(":(scenario does_bar)\nabc def\n# comment1\n  efg\n  # indented comment 2\n+layer1: pqr\n# comment inside expected_trace\n+layer1: xyz\n# comment after expected trace\n-layer1: z\n# comment before trace count\n$layer1: 2\n# comment at end\n\n");
  list<Line> lines;
  tangle(in, lines);
  CHECK_EQ(lines.front().contents, "void test_does_bar() {");  lines.pop_front();
  CHECK_EQ(lines.front().contents, "  Trace_file = \"does_bar\";"); lines.pop_front();
  CHECK_EQ(lines.front().contents, "  run(\"abc def\\n# comment1\\n  efg\\n  # indented comment 2\\n\");");  lines.pop_front();
  CHECK_EQ(lines.front().contents, "  CHECK_TRACE_CONTENTS(\"layer1: pqrlayer1: xyz\");");  lines.pop_front();
  CHECK_EQ(lines.front().contents, "  CHECK_TRACE_DOESNT_CONTAIN(\"layer1: z\");");  lines.pop_front();
  CHECK_EQ(lines.front().contents, "  CHECK_EQ(trace_count(\"layer1\"), 2);");  lines.pop_front();
  CHECK_EQ(lines.front().contents, "}");  lines.pop_front();
  CHECK(lines.empty());
}



void test_trim() {
  CHECK_EQ(trim(""), "");
  CHECK_EQ(trim(" "), "");
  CHECK_EQ(trim("  "), "");
  CHECK_EQ(trim("a"), "a");
  CHECK_EQ(trim(" a"), "a");
  CHECK_EQ(trim("  a"), "a");
  CHECK_EQ(trim("  ab"), "ab");
  CHECK_EQ(trim("a "), "a");
  CHECK_EQ(trim("a  "), "a");
  CHECK_EQ(trim("ab  "), "ab");
  CHECK_EQ(trim(" a "), "a");
  CHECK_EQ(trim("  a  "), "a");
  CHECK_EQ(trim("  ab  "), "ab");
}

void test_strip_indent() {
  CHECK_EQ(strip_indent("", 0), "");
  CHECK_EQ(strip_indent("", 1), "");
  CHECK_EQ(strip_indent("", 3), "");
  CHECK_EQ(strip_indent(" ", 0), " ");
  CHECK_EQ(strip_indent(" a", 0), " a");
  CHECK_EQ(strip_indent(" ", 1), "");
  CHECK_EQ(strip_indent(" a", 1), "a");
  CHECK_EQ(strip_indent(" ", 2), "");
  CHECK_EQ(strip_indent(" a", 2), "a");
  CHECK_EQ(strip_indent("  ", 0), "  ");
  CHECK_EQ(strip_indent("  a", 0), "  a");
  CHECK_EQ(strip_indent("  ", 1), " ");
  CHECK_EQ(strip_indent("  a", 1), " a");
  CHECK_EQ(strip_indent("  ", 2), "");
  CHECK_EQ(strip_indent("  a", 2), "a");
  CHECK_EQ(strip_indent("  ", 3), "");
  CHECK_EQ(strip_indent("  a", 3), "a");
}