feisty meow concerns codebase  2.140
test_huge_file.cpp
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1 /*
2 * Name : test_huge_file
3 * Author : Chris Koeritz
4 **
5 * Copyright (c) 1991-$now By Author. This program is free software; you can *
6 * redistribute it and/or modify it under the terms of the GNU General Public *
7 * License as published by the Free Software Foundation; either version 2 of *
8 * the License or (at your option) any later version. This is online at: *
9 * http://www.fsf.org/copyleft/gpl.html *
10 * Please send any updates to: fred@gruntose.com *
11 */
12 
14 #include <basis/byte_array.h>
15 #include <basis/functions.h>
16 #include <basis/guards.h>
17 #include <basis/astring.h>
19 #include <filesystem/directory.h>
20 #include <filesystem/filename.h>
21 #include <filesystem/huge_file.h>
24 #include <mathematics/chaos.h>
27 #include <unit_test/unit_base.h>
28 
29 using namespace application;
30 using namespace basis;
31 using namespace configuration;
32 using namespace mathematics;
33 using namespace filesystem;
34 using namespace loggers;
35 using namespace structures;
36 using namespace textual;
37 using namespace timely;
38 using namespace unit_test;
39 
40 #define LOG(s) CLASS_EMERGENCY_LOG(program_wide_logger::get(), s)
41 
42 class test_huge_file : public virtual unit_base, virtual public application_shell
43 {
44 public:
45  test_huge_file() : application_shell() {}
46  DEFINE_CLASS_NAME("test_huge_file");
47  void run_file_scan();
48  virtual int execute();
49 };
50 
51 void test_huge_file::run_file_scan()
52 {
53  FUNCDEF("run_file_scan");
55 
57  files.zap(0, 0); // toss the first element since that's our app filename.
58 
59  if (!files.length()) {
60  // pretend they gave us the list of files in the current directory. some of
61  // these might fail if they're locked up.
62  astring tmpdir = application_configuration::current_directory();
63  directory dir(tmpdir);
64  for (int i = 0; i < dir.files().length(); i++) {
65  // skip text files since we use those right here.
66  if (dir.files()[i].ends(".txt"))
67  continue;
68  astring chewed_string = tmpdir + "/" + dir.files()[i];
69  files += chewed_string;
70  }
71 //LOG(astring("added files since no cmd args: ") + files.text_form());
72  }
73 
74  byte_array data_found;
75  for (int i = 0; i < files.length(); i++) {
76  astring curr = files[i];
77 // LOG(a_sprintf("file %d: ", i) + curr);
78  huge_file test(curr, "rb");
79  ASSERT_TRUE(test.good(), "good check should say yes, it's good.");
80  double len = test.length();
81 //log(a_sprintf("file len is %.0f", len));
82  double posn = 0;
83  while ( (posn < len) && !test.eof() ) {
84  int readlen = randomizer.inclusive(1, 256 * KILOBYTE);
85 //log(a_sprintf("read %.0f bytes, posn now %.0f bytes", double(readlen), posn));
86  int bytes_read = 0;
87  outcome ret = test.read(data_found, readlen, bytes_read);
88  ASSERT_EQUAL(ret.value(), huge_file::OKAY, "should be able to read file");
89  if (ret == huge_file::OKAY) {
90  posn += bytes_read;
91  }
92  }
93  ASSERT_TRUE(test.eof(), "eof check should be at eof.");
94  if (posn != len)
95  log(a_sprintf("failed check, want %.0f, got %.0f", double(len), double(posn)));
96  ASSERT_EQUAL(posn, len, "eof check should be at right position: ");
97 // log(astring("successfully read ") + curr);
98  }
99 }
100 
101 int test_huge_file::execute()
102 {
103  FUNCDEF("execute");
104  run_file_scan();
105  return final_report();
106 }
107 
108 HOOPLE_MAIN(test_huge_file, )
109 
The application_shell is a base object for console programs.
a_sprintf is a specialization of astring that provides printf style support.
Definition: astring.h:440
Provides a dynamically resizable ASCII character string.
Definition: astring.h:35
A very common template for a dynamic array of bytes.
Definition: byte_array.h:36
Outcomes describe the state of completion for an operation.
Definition: outcome.h:31
int value() const
Definition: outcome.h:51
Implements a scanner that finds all filenames in the directory specified.
Definition: directory.h:27
Supports reading and writing to very large files, > 4 gigabytes.
Definition: huge_file.h:36
a platform-independent way to acquire random numbers in a specific range.
Definition: chaos.h:51
An array of strings with some additional helpful methods.
Definition: string_array.h:32
#define DEFINE_CLASS_NAME(objname)
Defines the name of a class by providing a couple standard methods.
Definition: enhance_cpp.h:45
#define FUNCDEF(func_in)
FUNCDEF sets the name of a function (and plugs it into the callstack).
Definition: enhance_cpp.h:57
Provides macros that implement the 'main' program of an application.
#define HOOPLE_MAIN(obj_name, obj_args)
options that should work for most unix and linux apps.
Definition: hoople_main.h:61
Implements an application lock to ensure only one is running at once.
char ** _global_argv
The guards collection helps in testing preconditions and reporting errors.
Definition: array.h:30
const int KILOBYTE
Number of bytes in a kilobyte.
Definition: definitions.h:134
list files
Definition: eml_to_txt.py:157
A platform independent way to obtain the timestamp of a file.
Definition: byte_filer.cpp:37
A logger that sends to the console screen using the standard output device.
An extension to floating point primitives providing approximate equality.
Definition: averager.h:21
A dynamic container class that holds any kind of object via pointers.
Definition: amorph.h:55
#include <time.h>
Definition: earth_time.cpp:37
Useful support functions for unit testing, especially within hoople.
Definition: unit_base.cpp:35
#define randomizer()
#define test(expr)
#define ASSERT_EQUAL(a, b, test_name)
Definition: unit_base.h:38
#define ASSERT_TRUE(a, test_name)
Definition: unit_base.h:46