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Breakpad Linux dumper: Add unit tests for google_breakpad::Module.
Adjust Module's interface a bit to facilitate testing: - Make AssignSourceIds something a client can call --- it's perfectly well-defined, so this is an okay change. - Add GetFunctions, GetFiles and FindExistingfile member functions, which the test harness will use to get results to examine. a=jimblandy, r=nealsid git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@466 4c0a9323-5329-0410-9bdc-e9ce6186880e
This commit is contained in:
jimblandy
parent
6ed5383245
commit
52cb2c6f42
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@ -29,6 +29,7 @@
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#include <cerrno>
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#include <cstring>
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#include "common/linux/module.h"
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namespace google_breakpad {
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@ -62,6 +63,11 @@ void Module::AddFunctions(vector<Function *>::iterator begin,
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functions_.insert(functions_.end(), begin, end);
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}
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void Module::GetFunctions(vector<Function *> *vec,
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vector<Function *>::iterator i) {
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vec->insert(i, functions_.begin(), functions_.end());
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}
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Module::File *Module::FindFile(const string &name) {
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// A tricky bit here. The key of each map entry needs to be a
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// pointer to the entry's File's name string. This means that we
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@ -90,6 +96,17 @@ Module::File *Module::FindFile(const char *name) {
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return FindFile(name_string);
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}
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Module::File *Module::FindExistingFile(const string &name) {
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FileByNameMap::iterator it = files_.find(&name);
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return (it == files_.end()) ? NULL : it->second;
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}
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void Module::GetFiles(vector<File *> *vec) {
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vec->clear();
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for (FileByNameMap::iterator it = files_.begin(); it != files_.end(); it++)
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vec->push_back(it->second);
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}
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void Module::AssignSourceIds() {
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// First, give every source file an id of -1.
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for (FileByNameMap::iterator file_it = files_.begin();
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@ -129,8 +146,9 @@ bool Module::Write(FILE *stream) {
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name_.c_str()))
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return ReportError();
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// Write out files.
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AssignSourceIds();
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// Write out files.
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for (FileByNameMap::iterator file_it = files_.begin();
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file_it != files_.end(); file_it++) {
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File *file = file_it->second;
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@ -140,9 +140,32 @@ class Module {
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File *FindFile(const string &name);
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File *FindFile(const char *name);
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// Write this module to STREAM in the breakpad symbol format.
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// Return true if all goes well, or false if an error occurs. This
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// method writes out:
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// If this module has a file named NAME, return a pointer to it.
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// Otherwise, return NULL.
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File *FindExistingFile(const string &name);
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// Insert pointers to the functions added to this module at I in
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// VEC. (Since this is effectively a copy of the function list, this
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// is mostly useful for testing; other uses should probably get a
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// more appropriate interface.)
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void GetFunctions(vector<Function *> *vec, vector<Function *>::iterator i);
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// Clear VEC and fill it with pointers to the Files added to this
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// module, sorted by name. (Since this is effectively a copy of the
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// function list, this is mostly useful for testing; other uses
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// should probably get a more appropriate interface.)
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void GetFiles(vector<File *> *vec);
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// Find those files in this module that are actually referred to by
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// functions' line number data, and assign them source id numbers.
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// Set the source id numbers for all other files --- unused by the
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// source line data --- to -1. We do this before writing out the
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// symbol file, at which point we omit any unused files.
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void AssignSourceIds();
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// Call AssignSourceIds, and write this module to STREAM in the
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// breakpad symbol format. Return true if all goes well, or false if
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// an error occurs. This method writes out:
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// - a header based on the values given to the constructor,
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// - the source files added via FindFile, and finally
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// - the functions added via AddFunctions, each with its lines.
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@ -152,13 +175,6 @@ class Module {
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private:
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// Find those files in this module that are actually referred to by
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// functions' line number data, and assign them source id numbers.
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// Set the source id numbers for all other files --- unused by the
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// source line data --- to -1. We do this before writing out the
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// symbol file, at which point we omit any unused files.
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void AssignSourceIds();
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// Report an error that has occurred writing the symbol file, using
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// errno to find the appropriate cause. Return false.
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static bool ReportError();
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286
src/common/linux/module_unittest.cc
Normal file
286
src/common/linux/module_unittest.cc
Normal file
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@ -0,0 +1,286 @@
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// Copyright (c) 2009, Google Inc.
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// module_unittest.cc: Unit tests for google_breakpad::Module
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#include <cerrno>
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#include <cstdio>
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#include <cstdlib>
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#include <cstring>
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#include <algorithm>
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#include <string>
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#include "breakpad_googletest_includes.h"
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#include "common/linux/module.h"
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using std::string;
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using std::vector;
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using google_breakpad::Module;
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// Return a FILE * referring to a temporary file that will be deleted
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// automatically when the stream is closed or the program exits.
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FILE *checked_tmpfile() {
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FILE *f = tmpfile();
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if (!f) {
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fprintf(stderr, "error creating temporary file: %s\n", strerror(errno));
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exit(1);
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}
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return f;
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}
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// Read from STREAM until end of file, and return the contents as a
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// string.
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string checked_read(FILE *stream) {
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string contents;
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int c;
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while ((c = getc(stream)) != EOF)
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contents.push_back(c);
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if (ferror(stream)) {
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fprintf(stderr, "error reading temporary file contents: %s\n",
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strerror(errno));
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exit(1);
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}
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return contents;
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}
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// Apply 'fflush' to STREAM, and check for errors.
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void checked_fflush(FILE *stream) {
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if (fflush(stream) == EOF) {
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fprintf(stderr, "error flushing temporary file stream: %s\n",
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strerror(errno));
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exit(1);
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}
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}
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// Apply 'fclose' to STREAM, and check for errors.
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void checked_fclose(FILE *stream) {
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if (fclose(stream) == EOF) {
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fprintf(stderr, "error closing temporary file stream: %s\n",
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strerror(errno));
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exit(1);
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}
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}
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#define MODULE_NAME "name with spaces"
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#define MODULE_OS "os-name"
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#define MODULE_ARCH "architecture"
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#define MODULE_ID "id-string"
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TEST(Write, Header) {
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FILE *f = checked_tmpfile();
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Module m(MODULE_NAME, MODULE_OS, MODULE_ARCH, MODULE_ID);
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m.Write(f);
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checked_fflush(f);
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rewind(f);
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string contents = checked_read(f);
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checked_fclose(f);
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EXPECT_STREQ("MODULE os-name architecture id-string name with spaces\n",
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contents.c_str());
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}
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TEST(Write, OneLineFunc) {
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FILE *f = checked_tmpfile();
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Module m(MODULE_NAME, MODULE_OS, MODULE_ARCH, MODULE_ID);
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Module::File *file = m.FindFile("file_name.cc");
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Module::Function *function = new(Module::Function);
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function->name_ = "function_name";
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function->address_ = 0xe165bf8023b9d9abLL;
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function->size_ = 0x1e4bb0eb1cbf5b09LL;
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function->parameter_size_ = 0x772beee89114358aLL;
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Module::Line line = { 0xe165bf8023b9d9abLL, 0x1e4bb0eb1cbf5b09LL,
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file, 67519080 };
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function->lines_.push_back(line);
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m.AddFunction(function);
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m.Write(f);
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checked_fflush(f);
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rewind(f);
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string contents = checked_read(f);
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checked_fclose(f);
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EXPECT_STREQ("MODULE os-name architecture id-string name with spaces\n"
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"FILE 0 file_name.cc\n"
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"FUNC e165bf8023b9d9ab 1e4bb0eb1cbf5b09 772beee89114358a"
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" function_name\n"
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"e165bf8023b9d9ab 1e4bb0eb1cbf5b09 67519080 0\n",
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contents.c_str());
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}
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TEST(Write, RelativeLoadAddress) {
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FILE *f = checked_tmpfile();
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Module m(MODULE_NAME, MODULE_OS, MODULE_ARCH, MODULE_ID);
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m.SetLoadAddress(0x2ab698b0b6407073LL);
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// Some source files. We will expect to see them in lexicographic order.
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Module::File *file1 = m.FindFile("filename-b.cc");
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Module::File *file2 = m.FindFile("filename-a.cc");
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// A function.
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Module::Function *function = new(Module::Function);
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function->name_ = "A_FLIBBERTIJIBBET::a_will_o_the_wisp(a clown)";
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function->address_ = 0xbec774ea5dd935f3LL;
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function->size_ = 0x2922088f98d3f6fcLL;
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function->parameter_size_ = 0xe5e9aa008bd5f0d0LL;
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// Some source lines. The module should not sort these.
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Module::Line line1 = { 0xbec774ea5dd935f3LL, 0x1c2be6d6c5af2611LL,
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file1, 41676901 };
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Module::Line line2 = { 0xdaf35bc123885c04LL, 0xcf621b8d324d0ebLL,
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file2, 67519080 };
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function->lines_.push_back(line2);
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function->lines_.push_back(line1);
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m.AddFunction(function);
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m.Write(f);
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checked_fflush(f);
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rewind(f);
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string contents = checked_read(f);
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checked_fclose(f);
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EXPECT_STREQ("MODULE os-name architecture id-string name with spaces\n"
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"FILE 0 filename-a.cc\n"
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"FILE 1 filename-b.cc\n"
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"FUNC 9410dc39a798c580 2922088f98d3f6fc e5e9aa008bd5f0d0"
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" A_FLIBBERTIJIBBET::a_will_o_the_wisp(a clown)\n"
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"b03cc3106d47eb91 cf621b8d324d0eb 67519080 0\n"
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"9410dc39a798c580 1c2be6d6c5af2611 41676901 1\n",
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contents.c_str());
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}
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TEST(Write, OmitUnusedFiles) {
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Module m(MODULE_NAME, MODULE_OS, MODULE_ARCH, MODULE_ID);
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// Create some source files.
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Module::File *file1 = m.FindFile("filename1");
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m.FindFile("filename2"); // not used by any line
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Module::File *file3 = m.FindFile("filename3");
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// Create a function.
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Module::Function *function = new(Module::Function);
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function->name_ = "function_name";
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function->address_ = 0x9b926d464f0b9384LL;
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function->size_ = 0x4f524a4ba795e6a6LL;
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function->parameter_size_ = 0xbbe8133a6641c9b7LL;
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// Source files that refer to some files, but not others.
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Module::Line line1 = { 0x595fa44ebacc1086LL, 0x1e1e0191b066c5b3LL,
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file1, 137850127 };
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Module::Line line2 = { 0x401ce8c8a12d25e3LL, 0x895751c41b8d2ce2LL,
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file3, 28113549 };
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function->lines_.push_back(line1);
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function->lines_.push_back(line2);
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m.AddFunction(function);
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m.AssignSourceIds();
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vector<Module::File *> vec;
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m.GetFiles(&vec);
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EXPECT_EQ((size_t) 3, vec.size());
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EXPECT_STREQ("filename1", vec[0]->name_.c_str());
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EXPECT_NE(-1, vec[0]->source_id_);
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// Expect filename2 not to be used.
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EXPECT_STREQ("filename2", vec[1]->name_.c_str());
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EXPECT_EQ(-1, vec[1]->source_id_);
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EXPECT_STREQ("filename3", vec[2]->name_.c_str());
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EXPECT_NE(-1, vec[2]->source_id_);
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FILE *f = checked_tmpfile();
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m.Write(f);
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checked_fflush(f);
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rewind(f);
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string contents = checked_read(f);
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checked_fclose(f);
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EXPECT_STREQ("MODULE os-name architecture id-string name with spaces\n"
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"FILE 0 filename1\n"
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"FILE 1 filename3\n"
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"FUNC 9b926d464f0b9384 4f524a4ba795e6a6 bbe8133a6641c9b7"
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" function_name\n"
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"595fa44ebacc1086 1e1e0191b066c5b3 137850127 0\n"
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"401ce8c8a12d25e3 895751c41b8d2ce2 28113549 1\n",
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contents.c_str());
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}
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TEST(Construct, AddFunctions) {
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FILE *f = checked_tmpfile();
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Module m(MODULE_NAME, MODULE_OS, MODULE_ARCH, MODULE_ID);
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// Two functions.
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Module::Function *function1 = new(Module::Function);
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function1->name_ = "_without_form";
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function1->address_ = 0xd35024aa7ca7da5cLL;
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function1->size_ = 0x200b26e605f99071LL;
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function1->parameter_size_ = 0xf14ac4fed48c4a99LL;
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Module::Function *function2 = new(Module::Function);
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function2->name_ = "_and_void";
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function2->address_ = 0x2987743d0b35b13fLL;
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function2->size_ = 0xb369db048deb3010LL;
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function2->parameter_size_ = 0x938e556cb5a79988LL;
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// Put them in a vector.
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vector<Module::Function *> vec;
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vec.push_back(function1);
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vec.push_back(function2);
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m.AddFunctions(vec.begin(), vec.end());
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m.Write(f);
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checked_fflush(f);
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rewind(f);
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string contents = checked_read(f);
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checked_fclose(f);
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EXPECT_STREQ("MODULE os-name architecture id-string name with spaces\n"
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"FUNC d35024aa7ca7da5c 200b26e605f99071 f14ac4fed48c4a99"
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" _without_form\n"
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"FUNC 2987743d0b35b13f b369db048deb3010 938e556cb5a79988"
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" _and_void\n",
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contents.c_str());
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// Check that m.GetFunctions returns the functions we expect.
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vec.clear();
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m.GetFunctions(&vec, vec.end());
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EXPECT_TRUE(vec.end() != find(vec.begin(), vec.end(), function1));
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EXPECT_TRUE(vec.end() != find(vec.begin(), vec.end(), function2));
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EXPECT_EQ((size_t) 2, vec.size());
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}
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TEST(Construct, UniqueFiles) {
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Module m(MODULE_NAME, MODULE_OS, MODULE_ARCH, MODULE_ID);
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Module::File *file1 = m.FindFile("foo");
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Module::File *file2 = m.FindFile(string("bar"));
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Module::File *file3 = m.FindFile(string("foo"));
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Module::File *file4 = m.FindFile("bar");
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EXPECT_NE(file1, file2);
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EXPECT_EQ(file1, file3);
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EXPECT_EQ(file2, file4);
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EXPECT_EQ(file1, m.FindExistingFile("foo"));
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EXPECT_TRUE(m.FindExistingFile("baz") == NULL);
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}
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@ -52,7 +52,8 @@ SRC = ../../..
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# dependencies using $(CXX). Value accumulated throughout the file.
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CPP_EXECUTABLES =
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# Source files whose coverage we are interested in. Value accumulated
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# Add the names of source files whose coverage you'd like 'make
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# coverage' to report on to this variable. Value accumulated
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# throughout the file.
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COVERAGE_SOURCES =
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@ -79,6 +80,7 @@ dump_stabs.o: dump_stabs.cc
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dump_symbols.o: dump_symbols.cc
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file_id.o: file_id.cc
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module.o: module.cc
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COVERAGE_SOURCES += module.cc
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stabs_reader.o: stabs_reader.cc
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COVERAGE_SOURCES += stabs_reader.cc
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@ -132,6 +134,22 @@ clean::
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rm -f file_id_unittest
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### Unit tests for google_breakpad::Module.
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check: check-module_unittest
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check-module_unittest: module_unittest
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module_unittest: \
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gtest-all.o \
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gtest_main.o \
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module.o \
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module_unittest.o \
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$(empty)
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||||
CPP_EXECUTABLES += module_unittest
|
||||
module_unittest.o: module_unittest.cc
|
||||
module_unittest.o: override CPPFLAGS += $(GTEST_CPPFLAGS) $(GMOCK_CPPFLAGS)
|
||||
clean::
|
||||
rm -f module_unittest
|
||||
|
||||
|
||||
### Generic compilation rules.
|
||||
|
||||
# Link C++ executables using the C++ compiler; see CPP_EXECUTABLES above.
|
||||
|
|
|
|||
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Reference in a new issue