Centralize libc++ test skipping logic

Summary:
This aims to replace the different decorators we've had on each libc++
test with a single solution. Each libc++ will be assigned to the
"libc++" category and a single central piece of code will decide whether
we are actually able to run libc++ test in the given configuration by
enabling or disabling the category (while giving the user the
opportunity to override this).

I started this effort because I wanted to get libc++ tests running on
android, and none of the existing decorators worked for this use case:
 - skipIfGcc - incorrect, we can build libc++ executables on android
 with gcc (in fact, after this, we can now do it on linux as well)
 - lldbutil.skip_if_library_missing - this checks whether libc++.so is
 loaded in the proces, which fails in case of a statically linked
 libc++ (this makes copying executables to the remote target easier to
 manage).

To make this work I needed to split out the pseudo_barrier code from the
force-included file, as libc++'s atomic does not play well with gcc on
linux, and this made every test fail, even though we need the code only
in the threading tests.

So far, I am only annotating one of the tests with this category. If
this does not break anything, I'll proceed to update the rest.

Reviewers: jingham, zturner, EricWF

Subscribers: srhines, lldb-commits

Differential Revision: https://reviews.llvm.org/D30984

llvm-svn: 299028

1 files changed, 16 insertions, 17 deletions

diff --git a/lldb/packages/Python/lldbsuite/test/functionalities/data-formatter/data-formatter-stl/libcxx/string/TestDataFormatterLibcxxString.py b/lldb/packages/Python/lldbsuite/test/functionalities/data-formatter/data-formatter-stl/libcxx/string/TestDataFormatterLibcxxString.py
index b0e84121dde..5b9b14d549e 100644
--- a/lldb/packages/Python/lldbsuite/test/functionalities/data-formatter/data-formatter-stl/libcxx/string/TestDataFormatterLibcxxString.py
+++ b/lldb/packages/Python/lldbsuite/test/functionalities/data-formatter/data-formatter-stl/libcxx/string/TestDataFormatterLibcxxString.py
@@ -23,9 +23,10 @@ class LibcxxStringDataFormatterTestCase(TestBase):
         TestBase.setUp(self)
         # Find the line number to break at.
         self.line = line_number('main.cpp', '// Set break point at this line.')
+        ns = 'ndk' if lldbplatformutil.target_is_android() else ''
+        self.namespace = 'std::__' + ns + '1'
 
-    @skipIf(compiler="gcc")
-    @skipIfWindows  # libc++ not ported to Windows yet
+    @add_test_categories(["libc++"])
     def test_with_run_command(self):
         """Test that that file and class static variables display correctly."""
         self.build()
@@ -36,9 +37,6 @@ class LibcxxStringDataFormatterTestCase(TestBase):
 
         self.runCmd("run", RUN_SUCCEEDED)
 
-        lldbutil.skip_if_library_missing(
-            self, self.target(), lldbutil.PrintableRegex("libc\+\+"))
-
         # The stop reason of the thread should be breakpoint.
         self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
                     substrs=['stopped',
@@ -58,17 +56,18 @@ class LibcxxStringDataFormatterTestCase(TestBase):
         # Execute the cleanup function during test case tear down.
         self.addTearDownHook(cleanup)
 
+        ns = self.namespace
         self.expect(
             "frame variable",
             substrs=[
-                '(std::__1::wstring) s = L"hello world! מזל טוב!"',
-                '(std::__1::wstring) S = L"!!!!"',
+                '(%s::wstring) s = L"hello world! מזל טוב!"'%ns,
+                '(%s::wstring) S = L"!!!!"'%ns,
                 '(const wchar_t *) mazeltov = 0x',
                 'L"מזל טוב"',
-                '(std::__1::string) q = "hello world"',
-                '(std::__1::string) Q = "quite a long std::strin with lots of info inside it"',
-                '(std::__1::string) IHaveEmbeddedZeros = "a\\0b\\0c\\0d"',
-                '(std::__1::wstring) IHaveEmbeddedZerosToo = L"hello world!\\0てざ ル゜䋨ミ㠧槊 きゅへ狦穤襩 じゃ馩リョ 䤦監"'])
+                '(%s::string) q = "hello world"'%ns,
+                '(%s::string) Q = "quite a long std::strin with lots of info inside it"'%ns,
+                '(%s::string) IHaveEmbeddedZeros = "a\\0b\\0c\\0d"'%ns,
+                '(%s::wstring) IHaveEmbeddedZerosToo = L"hello world!\\0てざ ル゜䋨ミ㠧槊 きゅへ狦穤襩 じゃ馩リョ 䤦監"'%ns])
 
         self.runCmd("n")
 
@@ -91,11 +90,11 @@ class LibcxxStringDataFormatterTestCase(TestBase):
         self.expect(
             "frame variable",
             substrs=[
-                '(std::__1::wstring) s = L"hello world! מזל טוב!"',
-                '(std::__1::wstring) S = L"!!!!!"',
+                '(%s::wstring) s = L"hello world! מזל טוב!"'%ns,
+                '(%s::wstring) S = L"!!!!!"'%ns,
                 '(const wchar_t *) mazeltov = 0x',
                 'L"מזל טוב"',
-                '(std::__1::string) q = "hello world"',
-                '(std::__1::string) Q = "quite a long std::strin with lots of info inside it"',
-                '(std::__1::string) IHaveEmbeddedZeros = "a\\0b\\0c\\0d"',
-                '(std::__1::wstring) IHaveEmbeddedZerosToo = L"hello world!\\0てざ ル゜䋨ミ㠧槊 きゅへ狦穤襩 じゃ馩リョ 䤦監"'])
+                '(%s::string) q = "hello world"'%ns,
+                '(%s::string) Q = "quite a long std::strin with lots of info inside it"'%ns,
+                '(%s::string) IHaveEmbeddedZeros = "a\\0b\\0c\\0d"'%ns,
+                '(%s::wstring) IHaveEmbeddedZerosToo = L"hello world!\\0てざ ル゜䋨ミ㠧槊 きゅへ狦穤襩 じゃ馩リョ 䤦監"'%ns])