[DO-1345] fixed windows packages (!16)

Reviewed-on: https://git.avroid.tech/Conan/conan_build/pulls/16
Co-authored-by: aleksandr.vodyanov <aleksandr.vodyanov@avroid.team>
Co-committed-by: aleksandr.vodyanov <aleksandr.vodyanov@avroid.team>

recipes/msys2/all/test_v1_package/conanfile.py

@@ -0,0 +1,28 @@
+from conans import ConanFile, tools
+from conans.errors import ConanException
+from io import StringIO
+
+
+class TestPackageConan(ConanFile):
+    settings = "os", "arch", "compiler", "build_type"
+
+    def build(self):
+        pass # nothing to do, skip hook warning
+
+    def test(self):
+        bash = tools.which("bash.exe")
+
+        if bash:
+            self.output.info("using bash.exe from: " + bash)
+        else:
+            raise ConanException("No instance of bash.exe could be found on %PATH%")
+
+        self.run('bash.exe -c ^"make --version^"')
+        self.run('bash.exe -c ^"! test -f /bin/link^"')
+        self.run('bash.exe -c ^"! test -f /usr/bin/link^"')
+
+        secret_value = "SECRET_CONAN_PKG_VARIABLE"
+        with tools.environment_append({"PKG_CONFIG_PATH": secret_value}):
+            output = StringIO()
+            self.run('bash.exe -c "echo $PKG_CONFIG_PATH"', output=output)
+            assert secret_value in output.getvalue()