1//===- unittests/Driver/DistroTest.cpp --- ToolChains tests ---------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// Unit tests for Distro detection.
10//
11//===----------------------------------------------------------------------===//
12
13#include "clang/Driver/Distro.h"
14#include "llvm/Support/VirtualFileSystem.h"
15#include "llvm/Support/raw_ostream.h"
16#include "llvm/TargetParser/Host.h"
17#include "gtest/gtest.h"
18
19using namespace clang;
20using namespace clang::driver;
21
22namespace {
23
24// The tests include all release-related files for each distribution
25// in the VFS, in order to make sure that earlier tests do not
26// accidentally result in incorrect distribution guess.
27
28TEST(DistroTest, DetectUbuntu) {
29 llvm::vfs::InMemoryFileSystem UbuntuTrustyFileSystem;
30 // Ubuntu uses Debian Sid version.
31 UbuntuTrustyFileSystem.addFile(Path: "/etc/debian_version", ModificationTime: 0,
32 Buffer: llvm::MemoryBuffer::getMemBuffer(InputData: "jessie/sid\n"));
33 UbuntuTrustyFileSystem.addFile(Path: "/etc/lsb-release", ModificationTime: 0,
34 Buffer: llvm::MemoryBuffer::getMemBuffer(InputData: "DISTRIB_ID=Ubuntu\n"
35 "DISTRIB_RELEASE=14.04\n"
36 "DISTRIB_CODENAME=trusty\n"
37 "DISTRIB_DESCRIPTION=\"Ubuntu 14.04 LTS\"\n"));
38 UbuntuTrustyFileSystem.addFile(Path: "/etc/os-release", ModificationTime: 0,
39 Buffer: llvm::MemoryBuffer::getMemBuffer(InputData: "NAME=\"Ubuntu\"\n"
40 "VERSION=\"14.04, Trusty Tahr\"\n"
41 "ID=ubuntu\n"
42 "ID_LIKE=debian\n"
43 "PRETTY_NAME=\"Ubuntu 14.04 LTS\"\n"
44 "VERSION_ID=\"14.04\"\n"
45 "HOME_URL=\"http://www.ubuntu.com/\"\n"
46 "SUPPORT_URL=\"http://help.ubuntu.com/\"\n"
47 "BUG_REPORT_URL=\"http://bugs.launchpad.net/ubuntu/\"\n"));
48
49 Distro UbuntuTrusty{UbuntuTrustyFileSystem, llvm::Triple("unknown-pc-linux")};
50 ASSERT_EQ(Distro(Distro::UbuntuTrusty), UbuntuTrusty);
51 ASSERT_TRUE(UbuntuTrusty.IsUbuntu());
52 ASSERT_FALSE(UbuntuTrusty.IsRedhat());
53 ASSERT_FALSE(UbuntuTrusty.IsOpenSUSE());
54 ASSERT_FALSE(UbuntuTrusty.IsDebian());
55 ASSERT_FALSE(UbuntuTrusty.IsGentoo());
56
57 Distro UbuntuTrusty2{UbuntuTrustyFileSystem, llvm::Triple("unknown-pc-windows")};
58 ASSERT_EQ(Distro(Distro::UnknownDistro), UbuntuTrusty2);
59
60 llvm::vfs::InMemoryFileSystem UbuntuYakketyFileSystem;
61 UbuntuYakketyFileSystem.addFile(Path: "/etc/debian_version", ModificationTime: 0,
62 Buffer: llvm::MemoryBuffer::getMemBuffer(InputData: "stretch/sid\n"));
63 UbuntuYakketyFileSystem.addFile(Path: "/etc/lsb-release", ModificationTime: 0,
64 Buffer: llvm::MemoryBuffer::getMemBuffer(InputData: "DISTRIB_ID=Ubuntu\n"
65 "DISTRIB_RELEASE=16.10\n"
66 "DISTRIB_CODENAME=yakkety\n"
67 "DISTRIB_DESCRIPTION=\"Ubuntu 16.10\"\n"));
68 UbuntuYakketyFileSystem.addFile(Path: "/etc/os-release", ModificationTime: 0,
69 Buffer: llvm::MemoryBuffer::getMemBuffer(InputData: "NAME=\"Ubuntu\"\n"
70 "VERSION=\"16.10 (Yakkety Yak)\"\n"
71 "ID=ubuntu\n"
72 "ID_LIKE=debian\n"
73 "PRETTY_NAME=\"Ubuntu 16.10\"\n"
74 "VERSION_ID=\"16.10\"\n"
75 "HOME_URL=\"http://www.ubuntu.com/\"\n"
76 "SUPPORT_URL=\"http://help.ubuntu.com/\"\n"
77 "BUG_REPORT_URL=\"http://bugs.launchpad.net/ubuntu/\"\n"
78 "PRIVACY_POLICY_URL=\"http://www.ubuntu.com/legal/terms-and-policies/privacy-policy\"\n"
79 "VERSION_CODENAME=yakkety\n"
80 "UBUNTU_CODENAME=yakkety\n"));
81
82 Distro UbuntuYakkety{UbuntuYakketyFileSystem, llvm::Triple("unknown-pc-linux")};
83 ASSERT_EQ(Distro(Distro::UbuntuYakkety), UbuntuYakkety);
84 ASSERT_TRUE(UbuntuYakkety.IsUbuntu());
85 ASSERT_FALSE(UbuntuYakkety.IsRedhat());
86 ASSERT_FALSE(UbuntuYakkety.IsOpenSUSE());
87 ASSERT_FALSE(UbuntuYakkety.IsDebian());
88 ASSERT_FALSE(UbuntuYakkety.IsGentoo());
89}
90
91TEST(DistroTest, DetectRedhat) {
92 llvm::vfs::InMemoryFileSystem Fedora25FileSystem;
93 Fedora25FileSystem.addFile(Path: "/etc/system-release-cpe", ModificationTime: 0,
94 Buffer: llvm::MemoryBuffer::getMemBuffer(InputData: "cpe:/o:fedoraproject:fedora:25\n"));
95 // Both files are symlinks to fedora-release.
96 Fedora25FileSystem.addFile(Path: "/etc/system-release", ModificationTime: 0,
97 Buffer: llvm::MemoryBuffer::getMemBuffer(InputData: "Fedora release 25 (Twenty Five)\n"));
98 Fedora25FileSystem.addFile(Path: "/etc/redhat-release", ModificationTime: 0,
99 Buffer: llvm::MemoryBuffer::getMemBuffer(InputData: "Fedora release 25 (Twenty Five)\n"));
100 Fedora25FileSystem.addFile(Path: "/etc/fedora-release", ModificationTime: 0,
101 Buffer: llvm::MemoryBuffer::getMemBuffer(InputData: "Fedora release 25 (Twenty Five)\n"));
102 Fedora25FileSystem.addFile(Path: "/etc/os-release", ModificationTime: 0,
103 Buffer: llvm::MemoryBuffer::getMemBuffer(InputData: "NAME=Fedora\n"
104 "VERSION=\"25 (Twenty Five)\"\n"
105 "ID=fedora\n"
106 "VERSION_ID=25\n"
107 "PRETTY_NAME=\"Fedora 25 (Twenty Five)\"\n"
108 "ANSI_COLOR=\"0;34\"\n"
109 "CPE_NAME=\"cpe:/o:fedoraproject:fedora:25\"\n"
110 "HOME_URL=\"https://fedoraproject.org/\"\n"
111 "BUG_REPORT_URL=\"https://bugzilla.redhat.com/\"\n"
112 "REDHAT_BUGZILLA_PRODUCT=\"Fedora\"\n"
113 "REDHAT_BUGZILLA_PRODUCT_VERSION=25\n"
114 "REDHAT_SUPPORT_PRODUCT=\"Fedora\"\n"
115 "REDHAT_SUPPORT_PRODUCT_VERSION=25\n"
116 "PRIVACY_POLICY_URL=https://fedoraproject.org/wiki/Legal:PrivacyPolicy\n"));
117 Distro Fedora25{Fedora25FileSystem, llvm::Triple("unknown-pc-linux")};
118 ASSERT_EQ(Distro(Distro::Fedora), Fedora25);
119 ASSERT_FALSE(Fedora25.IsUbuntu());
120 ASSERT_TRUE(Fedora25.IsRedhat());
121 ASSERT_FALSE(Fedora25.IsOpenSUSE());
122 ASSERT_FALSE(Fedora25.IsDebian());
123 ASSERT_FALSE(Fedora25.IsGentoo());
124
125 llvm::vfs::InMemoryFileSystem CentOS7FileSystem;
126 CentOS7FileSystem.addFile(Path: "/etc/system-release-cpe", ModificationTime: 0,
127 Buffer: llvm::MemoryBuffer::getMemBuffer(InputData: "cpe:/o:centos:centos:7\n"));
128 // Both files are symlinks to centos-release.
129 CentOS7FileSystem.addFile(Path: "/etc/system-release", ModificationTime: 0,
130 Buffer: llvm::MemoryBuffer::getMemBuffer(InputData: "CentOS Linux release 7.2.1511 (Core) \n"));
131 CentOS7FileSystem.addFile(Path: "/etc/redhat-release", ModificationTime: 0,
132 Buffer: llvm::MemoryBuffer::getMemBuffer(InputData: "CentOS Linux release 7.2.1511 (Core) \n"));
133 CentOS7FileSystem.addFile(Path: "/etc/centos-release", ModificationTime: 0,
134 Buffer: llvm::MemoryBuffer::getMemBuffer(InputData: "CentOS Linux release 7.2.1511 (Core) \n"));
135 CentOS7FileSystem.addFile(Path: "/etc/centos-release-upstream", ModificationTime: 0,
136 Buffer: llvm::MemoryBuffer::getMemBuffer(InputData: "Derived from Red Hat Enterprise Linux 7.2 (Source)\n"));
137 CentOS7FileSystem.addFile(Path: "/etc/os-release", ModificationTime: 0,
138 Buffer: llvm::MemoryBuffer::getMemBuffer(InputData: "NAME=\"CentOS Linux\"\n"
139 "VERSION=\"7 (Core)\"\n"
140 "ID=\"centos\"\n"
141 "ID_LIKE=\"rhel fedora\"\n"
142 "VERSION_ID=\"7\"\n"
143 "PRETTY_NAME=\"CentOS Linux 7 (Core)\"\n"
144 "ANSI_COLOR=\"0;31\"\n"
145 "CPE_NAME=\"cpe:/o:centos:centos:7\"\n"
146 "HOME_URL=\"https://www.centos.org/\"\n"
147 "BUG_REPORT_URL=\"https://bugs.centos.org/\"\n"
148 "\n"
149 "CENTOS_MANTISBT_PROJECT=\"CentOS-7\"\n"
150 "CENTOS_MANTISBT_PROJECT_VERSION=\"7\"\n"
151 "REDHAT_SUPPORT_PRODUCT=\"centos\"\n"
152 "REDHAT_SUPPORT_PRODUCT_VERSION=\"7\"\n"));
153
154 Distro CentOS7{CentOS7FileSystem, llvm::Triple("unknown-pc-linux")};
155 ASSERT_EQ(Distro(Distro::RHEL7), CentOS7);
156 ASSERT_FALSE(CentOS7.IsUbuntu());
157 ASSERT_TRUE(CentOS7.IsRedhat());
158 ASSERT_FALSE(CentOS7.IsOpenSUSE());
159 ASSERT_FALSE(CentOS7.IsDebian());
160 ASSERT_FALSE(CentOS7.IsGentoo());
161}
162
163TEST(DistroTest, DetectOpenSUSE) {
164 llvm::vfs::InMemoryFileSystem OpenSUSELeap421FileSystem;
165 OpenSUSELeap421FileSystem.addFile(Path: "/etc/SuSE-release", ModificationTime: 0,
166 Buffer: llvm::MemoryBuffer::getMemBuffer(InputData: "openSUSE 42.1 (x86_64)\n"
167 "VERSION = 42.1\n"
168 "CODENAME = Malachite\n"
169 "# /etc/SuSE-release is deprecated and will be removed in the future, use /etc/os-release instead\n"));
170 OpenSUSELeap421FileSystem.addFile(Path: "/etc/os-release", ModificationTime: 0,
171 Buffer: llvm::MemoryBuffer::getMemBuffer(InputData: "NAME=\"openSUSE Leap\"\n"
172 "VERSION=\"42.1\"\n"
173 "VERSION_ID=\"42.1\"\n"
174 "PRETTY_NAME=\"openSUSE Leap 42.1 (x86_64)\"\n"
175 "ID=opensuse\n"
176 "ANSI_COLOR=\"0;32\"\n"
177 "CPE_NAME=\"cpe:/o:opensuse:opensuse:42.1\"\n"
178 "BUG_REPORT_URL=\"https://bugs.opensuse.org\"\n"
179 "HOME_URL=\"https://opensuse.org/\"\n"
180 "ID_LIKE=\"suse\"\n"));
181
182 Distro OpenSUSELeap421{OpenSUSELeap421FileSystem, llvm::Triple("unknown-pc-linux")};
183 ASSERT_EQ(Distro(Distro::OpenSUSE), OpenSUSELeap421);
184 ASSERT_FALSE(OpenSUSELeap421.IsUbuntu());
185 ASSERT_FALSE(OpenSUSELeap421.IsRedhat());
186 ASSERT_TRUE(OpenSUSELeap421.IsOpenSUSE());
187 ASSERT_FALSE(OpenSUSELeap421.IsDebian());
188 ASSERT_FALSE(OpenSUSELeap421.IsGentoo());
189
190 llvm::vfs::InMemoryFileSystem OpenSUSE132FileSystem;
191 OpenSUSE132FileSystem.addFile(Path: "/etc/SuSE-release", ModificationTime: 0,
192 Buffer: llvm::MemoryBuffer::getMemBuffer(InputData: "openSUSE 13.2 (x86_64)\n"
193 "VERSION = 13.2\n"
194 "CODENAME = Harlequin\n"
195 "# /etc/SuSE-release is deprecated and will be removed in the future, use /etc/os-release instead\n"));
196 OpenSUSE132FileSystem.addFile(Path: "/etc/os-release", ModificationTime: 0,
197 Buffer: llvm::MemoryBuffer::getMemBuffer(InputData: "NAME=openSUSE\n"
198 "VERSION=\"13.2 (Harlequin)\"\n"
199 "VERSION_ID=\"13.2\"\n"
200 "PRETTY_NAME=\"openSUSE 13.2 (Harlequin) (x86_64)\"\n"
201 "ID=opensuse\n"
202 "ANSI_COLOR=\"0;32\"\n"
203 "CPE_NAME=\"cpe:/o:opensuse:opensuse:13.2\"\n"
204 "BUG_REPORT_URL=\"https://bugs.opensuse.org\"\n"
205 "HOME_URL=\"https://opensuse.org/\"\n"
206 "ID_LIKE=\"suse\"\n"));
207
208 Distro OpenSUSE132{OpenSUSE132FileSystem, llvm::Triple("unknown-pc-linux")};
209 ASSERT_EQ(Distro(Distro::OpenSUSE), OpenSUSE132);
210 ASSERT_FALSE(OpenSUSE132.IsUbuntu());
211 ASSERT_FALSE(OpenSUSE132.IsRedhat());
212 ASSERT_TRUE(OpenSUSE132.IsOpenSUSE());
213 ASSERT_FALSE(OpenSUSE132.IsDebian());
214 ASSERT_FALSE(OpenSUSE132.IsGentoo());
215
216 llvm::vfs::InMemoryFileSystem SLES10FileSystem;
217 SLES10FileSystem.addFile(Path: "/etc/SuSE-release", ModificationTime: 0,
218 Buffer: llvm::MemoryBuffer::getMemBuffer(InputData: "SUSE Linux Enterprise Server 10 (x86_64)\n"
219 "VERSION = 10\n"
220 "PATCHLEVEL = 4\n"));
221 SLES10FileSystem.addFile(Path: "/etc/lsb_release", ModificationTime: 0,
222 Buffer: llvm::MemoryBuffer::getMemBuffer(InputData: "LSB_VERSION=\"core-2.0-noarch:core-3.0-noarch:core-2.0-x86_64:core-3.0-x86_64\"\n"));
223
224 // SLES10 is unsupported and therefore evaluates to unknown
225 Distro SLES10{SLES10FileSystem, llvm::Triple("unknown-pc-linux")};
226 ASSERT_EQ(Distro(Distro::UnknownDistro), SLES10);
227 ASSERT_FALSE(SLES10.IsUbuntu());
228 ASSERT_FALSE(SLES10.IsRedhat());
229 ASSERT_FALSE(SLES10.IsOpenSUSE());
230 ASSERT_FALSE(SLES10.IsDebian());
231 ASSERT_FALSE(SLES10.IsGentoo());
232}
233
234TEST(DistroTest, DetectDebian) {
235 llvm::vfs::InMemoryFileSystem DebianJessieFileSystem;
236 DebianJessieFileSystem.addFile(Path: "/etc/debian_version", ModificationTime: 0,
237 Buffer: llvm::MemoryBuffer::getMemBuffer(InputData: "8.6\n"));
238 DebianJessieFileSystem.addFile(Path: "/etc/os-release", ModificationTime: 0,
239 Buffer: llvm::MemoryBuffer::getMemBuffer(InputData: "PRETTY_NAME=\"Debian GNU/Linux 8 (jessie)\"\n"
240 "NAME=\"Debian GNU/Linux\"\n"
241 "VERSION_ID=\"8\"\n"
242 "VERSION=\"8 (jessie)\"\n"
243 "ID=debian\n"
244 "HOME_URL=\"http://www.debian.org/\"\n"
245 "SUPPORT_URL=\"http://www.debian.org/support\"\n"
246 "BUG_REPORT_URL=\"https://bugs.debian.org/\"\n"));
247
248 Distro DebianJessie{DebianJessieFileSystem, llvm::Triple("unknown-pc-linux")};
249 ASSERT_EQ(Distro(Distro::DebianJessie), DebianJessie);
250 ASSERT_FALSE(DebianJessie.IsUbuntu());
251 ASSERT_FALSE(DebianJessie.IsRedhat());
252 ASSERT_FALSE(DebianJessie.IsOpenSUSE());
253 ASSERT_TRUE(DebianJessie.IsDebian());
254 ASSERT_FALSE(DebianJessie.IsGentoo());
255
256 llvm::vfs::InMemoryFileSystem DebianStretchSidFileSystem;
257 DebianStretchSidFileSystem.addFile(Path: "/etc/debian_version", ModificationTime: 0,
258 Buffer: llvm::MemoryBuffer::getMemBuffer(InputData: "stretch/sid\n"));
259 DebianStretchSidFileSystem.addFile(Path: "/etc/os-release", ModificationTime: 0,
260 Buffer: llvm::MemoryBuffer::getMemBuffer(InputData: "PRETTY_NAME=\"Debian GNU/Linux stretch/sid\"\n"
261 "NAME=\"Debian GNU/Linux\"\n"
262 "ID=debian\n"
263 "HOME_URL=\"http://www.debian.org/\"\n"
264 "SUPPORT_URL=\"http://www.debian.org/support\"\n"
265 "BUG_REPORT_URL=\"https://bugs.debian.org/\"\n"));
266
267 Distro DebianStretchSid{DebianStretchSidFileSystem, llvm::Triple("unknown-pc-linux")};
268 ASSERT_EQ(Distro(Distro::DebianStretch), DebianStretchSid);
269 ASSERT_FALSE(DebianStretchSid.IsUbuntu());
270 ASSERT_FALSE(DebianStretchSid.IsRedhat());
271 ASSERT_FALSE(DebianStretchSid.IsOpenSUSE());
272 ASSERT_TRUE(DebianStretchSid.IsDebian());
273 ASSERT_FALSE(DebianStretchSid.IsGentoo());
274}
275
276TEST(DistroTest, DetectExherbo) {
277 llvm::vfs::InMemoryFileSystem ExherboFileSystem;
278 ExherboFileSystem.addFile(Path: "/etc/os-release", ModificationTime: 0,
279 Buffer: llvm::MemoryBuffer::getMemBuffer(InputData: "NAME=\"Exherbo\"\n"
280 "PRETTY_NAME=\"Exherbo Linux\"\n"
281 "ID=exherbo\n"
282 "ANSI_COLOR=\"0;32\"\n"
283 "HOME_URL=\"https://www.exherbo.org/\"\n"
284 "SUPPORT_URL=\"irc://irc.freenode.net/#exherbo\"\n"
285 "BUG_REPORT_URL=\"https://bugs.exherbo.org/\"\n"));
286
287 Distro Exherbo{ExherboFileSystem, llvm::Triple("unknown-pc-linux")};
288 ASSERT_EQ(Distro(Distro::Exherbo), Exherbo);
289 ASSERT_FALSE(Exherbo.IsUbuntu());
290 ASSERT_FALSE(Exherbo.IsRedhat());
291 ASSERT_FALSE(Exherbo.IsOpenSUSE());
292 ASSERT_FALSE(Exherbo.IsDebian());
293 ASSERT_FALSE(Exherbo.IsGentoo());
294}
295
296TEST(DistroTest, DetectArchLinux) {
297 llvm::vfs::InMemoryFileSystem ArchLinuxFileSystem;
298 ArchLinuxFileSystem.addFile(Path: "/etc/arch-release", ModificationTime: 0, // (empty)
299 Buffer: llvm::MemoryBuffer::getMemBuffer(InputData: ""));
300 ArchLinuxFileSystem.addFile(Path: "/etc/os-release", ModificationTime: 0,
301 Buffer: llvm::MemoryBuffer::getMemBuffer(InputData: "NAME=\"Arch Linux\"\n"
302 "ID=arch\n"
303 "PRETTY_NAME=\"Arch Linux\"\n"
304 "ANSI_COLOR=\"0;36\"\n"
305 "HOME_URL=\"https://www.archlinux.org/\"\n"
306 "SUPPORT_URL=\"https://bbs.archlinux.org/\"\n"
307 "BUG_REPORT_URL=\"https://bugs.archlinux.org/\"\n"));
308
309 Distro ArchLinux{ArchLinuxFileSystem, llvm::Triple("unknown-pc-linux")};
310 ASSERT_EQ(Distro(Distro::ArchLinux), ArchLinux);
311 ASSERT_FALSE(ArchLinux.IsUbuntu());
312 ASSERT_FALSE(ArchLinux.IsRedhat());
313 ASSERT_FALSE(ArchLinux.IsOpenSUSE());
314 ASSERT_FALSE(ArchLinux.IsDebian());
315 ASSERT_FALSE(ArchLinux.IsGentoo());
316}
317
318TEST(DistroTest, DetectGentoo) {
319 llvm::vfs::InMemoryFileSystem GentooFileSystem;
320 GentooFileSystem.addFile(
321 Path: "/etc/gentoo-release", ModificationTime: 0,
322 Buffer: llvm::MemoryBuffer::getMemBuffer(InputData: "Gentoo Base System release 2.6"));
323 GentooFileSystem.addFile(
324 Path: "/etc/os-release", ModificationTime: 0,
325 Buffer: llvm::MemoryBuffer::getMemBuffer(
326 InputData: "NAME=Gentoo\n"
327 "ID=gentoo\n"
328 "PRETTY_NAME=\"Gentoo/Linux\"\n"
329 "ANSI_COLOR=\"1;32\"\n"
330 "HOME_URL=\"https://www.gentoo.org/\"\n"
331 "SUPPORT_URL=\"https://www.gentoo.org/support/\"\n"
332 "BUG_REPORT_URL=\"https://bugs.gentoo.org/\"\n"));
333
334 Distro Gentoo{GentooFileSystem, llvm::Triple("unknown-pc-linux")};
335 ASSERT_EQ(Distro(Distro::Gentoo), Gentoo);
336 ASSERT_FALSE(Gentoo.IsUbuntu());
337 ASSERT_FALSE(Gentoo.IsRedhat());
338 ASSERT_FALSE(Gentoo.IsOpenSUSE());
339 ASSERT_FALSE(Gentoo.IsDebian());
340 ASSERT_TRUE(Gentoo.IsGentoo());
341}
342
343TEST(DistroTest, DetectWindowsAndCrossCompile) {
344
345 class CountingFileSystem : public llvm::vfs::ProxyFileSystem {
346 public:
347 CountingFileSystem() : ProxyFileSystem(llvm::vfs::getRealFileSystem()) {}
348
349 llvm::ErrorOr<llvm::vfs::Status> status(const llvm::Twine &Path) override {
350 ++Count;
351 return llvm::vfs::ProxyFileSystem::status(Path);
352 }
353
354 llvm::ErrorOr<std::unique_ptr<llvm::vfs::File>>
355 openFileForRead(const llvm::Twine &Path) override {
356 ++Count;
357 return llvm::vfs::ProxyFileSystem::openFileForRead(Path);
358 }
359
360 unsigned Count{};
361 };
362
363 llvm::Triple Host(llvm::sys::getProcessTriple());
364 if (!Host.isOSWindows())
365 GTEST_SKIP();
366
367 llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem> RFS =
368 llvm::vfs::getRealFileSystem();
369
370 CountingFileSystem CFileSystem;
371 Distro LinuxDistro{CFileSystem, llvm::Triple("unknown-pc-linux")};
372 ASSERT_EQ(Distro(Distro::UnknownDistro), LinuxDistro);
373 ASSERT_GT(CFileSystem.Count, 0U);
374
375 Distro WinDistro{CFileSystem, llvm::Triple("unknown-pc-windows")};
376 ASSERT_EQ(Distro(Distro::UnknownDistro), WinDistro);
377 ASSERT_GT(CFileSystem.Count, 0U);
378
379 // When running on Windows along with a real file system, ensure that no
380 // distro is returned if targeting Linux
381 Distro LinuxRealDistro{*RFS, llvm::Triple("unknown-pc-linux")};
382 ASSERT_EQ(Distro(Distro::UnknownDistro), LinuxRealDistro);
383
384 Distro WinRealDistro{*RFS, llvm::Triple("unknown-pc-windows")};
385 ASSERT_EQ(Distro(Distro::UnknownDistro), WinRealDistro);
386}
387
388TEST(DistroTest, DetectLinux) {
389 llvm::Triple Host(llvm::sys::getProcessTriple());
390 if (!Host.isOSLinux())
391 GTEST_SKIP();
392
393 // When running on Linux, check if the distro is the same as the host when
394 // targeting Linux
395 llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem> RFS =
396 llvm::vfs::getRealFileSystem();
397 Distro HostDistro{*RFS, Host};
398 Distro LinuxRealDistro{*RFS, llvm::Triple("unknown-pc-linux")};
399 ASSERT_EQ(HostDistro, LinuxRealDistro);
400}
401
402} // end anonymous namespace
403

source code of clang/unittests/Driver/DistroTest.cpp