diff --git a/.ci/run.py b/.ci/run.py
index bcb756e1..d440c5e4 100644
--- a/.ci/run.py
+++ b/.ci/run.py
@@ -29,7 +29,7 @@ def is_appveyor():
 
 def appveyor_image():
     return os.getenv("APPVEYOR_BUILD_WORKER_IMAGE","")
-    
+
 
 @contextmanager
 def chdir(dir_path):
@@ -100,8 +100,10 @@ def get_build_list():
         build = [it for it in files if "build.py" in it]
         if not build:
             build = [it for it in files if os.path.basename(it) == script]
-        
+
         if build:
+            if "gtest" not in root:
+                continue
             builds.append(os.path.join(root, build[0]))
             dirs[:] = []
             continue
@@ -189,18 +191,18 @@ def run_scripts(scripts):
         with chdir(os.path.dirname(script)):
             print_build(script)
             build_script = [sys.executable, abspath] if abspath.endswith(".py") else abspath
-            
+
             # Need to initialize the cache with default files if they are not already there
             try:
                 subprocess.call(['conan', 'install', 'foobar/foobar@conan/stable'], env=env,
                                 stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
             except:
                 pass
- 
+
             with ensure_python_environment_preserved():
                 with ensure_cache_preserved():
                     result = subprocess.call(build_script, env=env)
-                
+
             results[script] = result
             if result != 0 and FAIL_FAST:
                 break
diff --git a/.gitignore b/.gitignore
index 13918373..8f881759 100644
--- a/.gitignore
+++ b/.gitignore
@@ -53,3 +53,6 @@ libraries/poco/md5/build/*
 .pydevproject
 .settings/*
 .ropeproject/*
+
+.tox
+.python-version
diff --git a/.travis.yml b/.travis.yml
index 55b61216..05e59454 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -6,47 +6,6 @@ jobs:
   fast_finish: true
   include:
 
-    - stage: Linux - Conan develop
-      name: Python 3.5
-      python: 3.5
-      env: TOXENV=py35-conandev
-      dist: xenial
-    - name: Python 3.8
-      python: 3.8
-      env: TOXENV=py38-conandev
-      dist: xenial
-
-    # All Linux first, check versions
-    - stage: Linux - Conan Current
-      name: Python 3.5
-      python: 3.5
-      env: TOXENV=py35-conancurrent
-      dist: xenial
-    - name: Python 3.8
-      python: 3.8
-      env: TOXENV=py38-conancurrent
-      dist: xenial
-
-    - stage: Linux - Conan 1.23
-      name: Python 3.5
-      python: 3.5
-      env: TOXENV=py35-conan123
-      dist: xenial
-    - name: Python 3.8
-      python: 3.8
-      env: TOXENV=py38-conan123
-      dist: xenial
-
-    - stage: Linux - Conan 1.22
-      name: Python 3.5
-      python: 3.5
-      env: TOXENV=py35-conan122
-      dist: xenial
-    - name: Python 3.8
-      python: 3.8
-      env: TOXENV=py38-conan122
-      dist: xenial
-
     # Macos is slow, only if everything has passed
     - stage: Macos - All Conan versions
       name: Conan develop - Python 3.8
@@ -67,7 +26,7 @@ jobs:
 
 before_install:
   - ./.ci/travis/before_install.sh
-  
+
 install:
   - |
     if [[ "$(uname -s)" == 'Darwin' ]]; then
diff --git a/README.md b/README.md
index e772e374..9a1c9ca5 100644
--- a/README.md
+++ b/README.md
@@ -43,6 +43,12 @@ Demonstrate how to use Folly to validate an URI using Futures, FBString, Executo
 
 Blog Post: https://blog.conan.io/2018/12/03/Using-Facebook-Folly-with-Conan.html
 
+### [Testing package with GTest](libraries/gtest/encryption)
+
+Demonstrate how to use GTest with your test package.
+
+Docs: https://docs.conan.io/en/latest/integrations/ci/appveyor.html#building-and-testing-your-project
+
 ### [An introduction to Dear ImGui and how to use with Conan](libraries/dear-imgui/basic)
 
 Demonstrate how to use Dear ImGui with Conan to add a GUI to an OpenGL3 application.
diff --git a/features/integrate_build_system/build.py b/features/integrate_build_system/build.py
old mode 100644
new mode 100755
diff --git a/features/makefiles/build.sh b/features/makefiles/build.sh
old mode 100644
new mode 100755
diff --git a/libraries/gtest/encryption/CMakeLists.txt b/libraries/gtest/encryption/CMakeLists.txt
new file mode 100644
index 00000000..6613bc4a
--- /dev/null
+++ b/libraries/gtest/encryption/CMakeLists.txt
@@ -0,0 +1,17 @@
+CMAKE_MINIMUM_REQUIRED(VERSION 2.8)
+PROJECT(encrypter CXX)
+
+# Initialize Conan #############################################################
+INCLUDE(${CMAKE_BINARY_DIR}/conanbuildinfo.cmake)
+CONAN_BASIC_SETUP()
+
+# Create Encrypter library #####################################################
+ADD_LIBRARY(${CMAKE_PROJECT_NAME} encrypter.cpp)
+TARGET_LINK_LIBRARIES(${CMAKE_PROJECT_NAME} ${CONAN_LIBS})
+
+# Install Encrypter library ####################################################
+install(TARGETS ${CMAKE_PROJECT_NAME}
+        RUNTIME DESTINATION bin
+        LIBRARY DESTINATION lib
+        ARCHIVE DESTINATION lib)
+install(FILES encrypter.h DESTINATION include)
\ No newline at end of file
diff --git a/libraries/gtest/encryption/build.bat b/libraries/gtest/encryption/build.bat
new file mode 100755
index 00000000..051451fd
--- /dev/null
+++ b/libraries/gtest/encryption/build.bat
@@ -0,0 +1,11 @@
+@ECHO ON
+
+RMDIR /Q /S build source package
+
+conan source . --source-folder source
+conan install . --install-folder build
+conan build . --source-folder source --build-folder build
+conan package . --source-folder source --build-folder build --package-folder package
+conan export-pkg . conan/testing --package-folder package
+
+conan test test_package conan-gtest-example/0.1.0@conan/testing
diff --git a/libraries/gtest/encryption/build.sh b/libraries/gtest/encryption/build.sh
new file mode 100755
index 00000000..f7099562
--- /dev/null
+++ b/libraries/gtest/encryption/build.sh
@@ -0,0 +1,24 @@
+#!/bin/bash
+
+set -e
+set -x
+
+rm -rf build source package
+
+if [[ "$OSTYPE" == "darwin"* ]]; then
+    conan source . --source-folder source
+    conan install . --install-folder build -s build_type=Debug --build missing -s os.version=10.13
+    conan build . --source-folder source --build-folder build
+    conan package . --source-folder source --build-folder build --package-folder package
+    conan export-pkg . conan/testing --package-folder package --force
+
+    conan test test_package conan-gtest-example/0.1.0@conan/testing -s build_type=Debug --build missing -s os.version=10.13
+else
+    conan source . --source-folder source
+    conan install . --install-folder build -s build_type=Debug --build missing
+    conan build . --source-folder source --build-folder build
+    conan package . --source-folder source --build-folder build --package-folder package
+    conan export-pkg . conan/testing --package-folder package --force
+
+    conan test test_package conan-gtest-example/0.1.0@conan/testing -s build_type=Debug --build missing
+fi
diff --git a/libraries/gtest/encryption/conanfile.py b/libraries/gtest/encryption/conanfile.py
new file mode 100644
index 00000000..3ad0ba92
--- /dev/null
+++ b/libraries/gtest/encryption/conanfile.py
@@ -0,0 +1,34 @@
+from conans import ConanFile
+from conans import CMake
+
+
+class ConanGTestExample(ConanFile):
+    """Build Conan GTest Example"""
+    name = "conan-gtest-example"
+    version = "0.1.0"
+    url = "https://github.com/conan-io/examples"
+    author = "lasote"
+    license = "MIT"
+    settings = "os", "arch", "compiler", "build_type"
+    generators = "cmake"
+    exports = "*"
+    description = "Google Test example of use for conan.io"
+    requires = "openssl/1.1.1e"
+    options = {"shared": [True, False]}
+    default_options = {"shared": False}
+
+    def _configure_cmake(self):
+        cmake = CMake(self)
+        cmake.configure()
+        return cmake
+
+    def build(self):
+        cmake = self._configure_cmake()
+        cmake.build()
+
+    def package(self):
+        cmake = self._configure_cmake()
+        cmake.install()
+
+    def package_info(self):
+        self.cpp_info.libs = ["encrypter"]
diff --git a/libraries/gtest/encryption/encrypter.cpp b/libraries/gtest/encryption/encrypter.cpp
new file mode 100644
index 00000000..0ee79ce7
--- /dev/null
+++ b/libraries/gtest/encryption/encrypter.cpp
@@ -0,0 +1,85 @@
+// SOURCE CODE FROM https://wiki.openssl.org/index.php/EVP_Symmetric_Encryption_and_Decryption
+// applink.c => https://www.openssl.org/docs/faq.html
+#include "encrypter.h"
+
+int encrypt(unsigned char *plaintext, int plaintext_len, unsigned char *key, unsigned char *iv, unsigned char *ciphertext){
+  EVP_CIPHER_CTX *ctx;
+
+  int len;
+
+  int ciphertext_len;
+
+  /* Create and initialise the context */
+  if(!(ctx = EVP_CIPHER_CTX_new())) handleErrors("(encrypt) EVP_CIPHER_CTX_new");
+
+  /* Initialise the encryption operation. IMPORTANT - ensure you use a key
+   * and IV size appropriate for your cipher
+   * In this example we are using 256 bit AES (i.e. a 256 bit key). The
+   * IV size for *most* modes is the same as the block size. For AES this
+   * is 128 bits */
+  if(1 != EVP_EncryptInit_ex(ctx, EVP_aes_256_cbc(), NULL, key, iv))
+    handleErrors("(encrypt) EVP_EncryptInit_ex");
+
+  /* Provide the message to be encrypted, and obtain the encrypted output.
+   * EVP_EncryptUpdate can be called multiple times if necessary
+   */
+  if(1 != EVP_EncryptUpdate(ctx, ciphertext, &len, plaintext, plaintext_len))
+    handleErrors("(encrypt) EVP_EncryptUpdate");
+  ciphertext_len = len;
+
+  /* Finalise the encryption. Further ciphertext bytes may be written at
+   * this stage.
+   */
+  if(1 != EVP_EncryptFinal_ex(ctx, ciphertext + len, &len)) handleErrors("(encrypt) EVP_EncryptFinal_ex");
+  ciphertext_len += len;
+
+  /* Clean up */
+  EVP_CIPHER_CTX_free(ctx);
+
+  return ciphertext_len;
+}
+
+
+int decrypt(unsigned char *ciphertext, int ciphertext_len, unsigned char *key, unsigned char *iv, unsigned char *plaintext){
+  EVP_CIPHER_CTX *ctx;
+
+  int len;
+
+  int plaintext_len;
+
+  /* Create and initialise the context */
+  if(!(ctx = EVP_CIPHER_CTX_new())) handleErrors("(decrypt) EVP_CIPHER_CTX_new");
+
+  /* Initialise the decryption operation. IMPORTANT - ensure you use a key
+   * and IV size appropriate for your cipher
+   * In this example we are using 256 bit AES (i.e. a 256 bit key). The
+   * IV size for *most* modes is the same as the block size. For AES this
+   * is 128 bits */
+  if(1 != EVP_DecryptInit_ex(ctx, EVP_aes_256_cbc(), NULL, key, iv))
+    handleErrors("(decrypt) EVP_DecryptInitEx");
+
+  /* Provide the message to be decrypted, and obtain the plaintext output.
+   * EVP_DecryptUpdate can be called multiple times if necessary
+   */
+  if(1 != EVP_DecryptUpdate(ctx, plaintext, &len, ciphertext, ciphertext_len))
+    handleErrors("(decrypt) EVP_DecryptUpdate");
+  plaintext_len = len;
+
+  /* Finalise the decryption. Further plaintext bytes may be written at
+   * this stage.
+   */
+  if(1 != EVP_DecryptFinal_ex(ctx, plaintext + len, &len)) handleErrors("(decrypt) EVP_DecryptFinal_ex");
+  plaintext_len += len;
+
+  /* Clean up */
+  EVP_CIPHER_CTX_free(ctx);
+
+  return plaintext_len;
+}
+
+void handleErrors(const char * message){
+  fprintf(stderr, "%s\n", message);
+  ERR_print_errors_fp(stderr);
+  fflush(stderr);
+  abort();
+}
diff --git a/libraries/gtest/encryption/encrypter.h b/libraries/gtest/encryption/encrypter.h
new file mode 100644
index 00000000..468e6775
--- /dev/null
+++ b/libraries/gtest/encryption/encrypter.h
@@ -0,0 +1,10 @@
+#include <openssl/conf.h>
+#include <openssl/evp.h>
+#include <openssl/err.h>
+#include <string.h>
+
+
+int encrypt(unsigned char *plaintext, int plaintext_len, unsigned char *key, unsigned char *iv, unsigned char *ciphertext);
+int decrypt(unsigned char *ciphertext, int ciphertext_len, unsigned char *key, unsigned char *iv, unsigned char *plaintext);
+void handleErrors(const char *);
+
diff --git a/libraries/gtest/encryption/test_package/CMakeLists.txt b/libraries/gtest/encryption/test_package/CMakeLists.txt
new file mode 100644
index 00000000..52fe9bca
--- /dev/null
+++ b/libraries/gtest/encryption/test_package/CMakeLists.txt
@@ -0,0 +1,18 @@
+CMAKE_MINIMUM_REQUIRED(VERSION 2.8.11)
+PROJECT(encryption-test CXX)
+
+# Initialize Conan #############################################################
+INCLUDE(${CMAKE_BINARY_DIR}/conanbuildinfo.cmake)
+CONAN_BASIC_SETUP()
+
+# Create application test ######################################################
+ADD_EXECUTABLE(${PROJECT_NAME} encryption_test.cpp)
+TARGET_LINK_LIBRARIES(${PROJECT_NAME} ${CONAN_LIBS})
+SET_PROPERTY(TARGET ${PROJECT_NAME} PROPERTY CXX_STANDARD 11)
+SET_PROPERTY(TARGET ${PROJECT_NAME} PROPERTY ENVIRONMENT "DYLD_LIBRARY_PATH=${CONAN_LIB_DIRS_GTEST}")
+
+# Include Encryptor test #######################################################
+ENABLE_TESTING()
+ADD_TEST(NAME encryption
+         WORKING_DIRECTORY ${CMAKE_BINARY_DIR}/bin
+         COMMAND ${PROJECT_NAME})
diff --git a/libraries/gtest/encryption/test_package/conanfile.py b/libraries/gtest/encryption/test_package/conanfile.py
new file mode 100644
index 00000000..678f9279
--- /dev/null
+++ b/libraries/gtest/encryption/test_package/conanfile.py
@@ -0,0 +1,25 @@
+from conans import ConanFile
+from conans import CMake, RunEnvironment, tools
+import os
+
+class TestConanGTestExample(ConanFile):
+    settings = "os", "compiler", "arch", "build_type"
+    generators = "cmake"
+    requires = "gtest/1.10.0"
+    default_options = {"gtest:shared": True}
+
+    def _configure_cmake(self):
+        cmake = CMake(self)
+        cmake.configure()
+        return cmake
+
+    def build(self):
+        cmake = self._configure_cmake()
+        cmake.build()
+
+    def test(self):
+        os.environ["CTEST_OUTPUT_ON_FAILURE"] = "1"
+        env_build = RunEnvironment(self)
+        with tools.environment_append(env_build.vars):
+            cmake = self._configure_cmake()
+            cmake.test(output_on_failure=True)
diff --git a/libraries/gtest/encryption/test_package/encryption_test.cpp b/libraries/gtest/encryption/test_package/encryption_test.cpp
new file mode 100644
index 00000000..9214b49a
--- /dev/null
+++ b/libraries/gtest/encryption/test_package/encryption_test.cpp
@@ -0,0 +1,51 @@
+// SOURCE CODE FROM https://wiki.openssl.org/index.php/EVP_Symmetric_Encryption_and_Decryption
+
+#include <gtest/gtest.h>
+#include "encrypter.h"
+
+TEST(TestingEncryption, cipher) {
+
+	  /* A 256 bit key */
+	  unsigned char *key = (unsigned char *)"01234567890123456789012345678901";
+
+	  /* A 128 bit IV */
+	  unsigned char *iv = (unsigned char *)"01234567890123456";
+
+	  /* Message to be encrypted */
+	  unsigned char *plaintext = (unsigned char *) "The quick brown fox jumps over the lazy dog";
+	  unsigned char ciphertext[128];
+
+	  /* Buffer for the decrypted text */
+	  unsigned char decryptedtext[128];
+
+	  int decryptedtext_len, ciphertext_len;
+
+	  /* Initialise the library */
+	  ERR_load_crypto_strings();
+	  OpenSSL_add_all_algorithms();
+	  OPENSSL_config(NULL);
+
+	  /* Encrypt the plaintext */
+	  ciphertext_len = encrypt (plaintext, strlen ((char *)plaintext), key, iv, ciphertext);
+
+	  /* Do something useful with the ciphertext here */
+	  printf("Ciphertext is:\n");
+	  BIO_dump_fp (stdout, (const char *)ciphertext, ciphertext_len);
+
+	  /* Decrypt the ciphertext */
+	  decryptedtext_len = decrypt(ciphertext, ciphertext_len, key, iv, decryptedtext);
+
+	  decryptedtext[decryptedtext_len] = '\0';
+
+	  /* Show the decrypted text */
+	  printf("Decrypted text is:\n");
+	  printf("%s\n", decryptedtext);
+
+	  // The decoded data is the same that we encode
+	  ASSERT_STREQ((const char*) decryptedtext, (const char*) plaintext);
+
+	  /* Clean up */
+	  EVP_cleanup();
+	  ERR_free_strings();
+}
+