Currently Inja's CMake config will build unit tests as long as `BUILD_TESTING` is enabled. As a result, when including Inja in another CMake project, it is not possible to build the latter's unit tests without also enabling Inja's own unit tests.
It's common for libraries to include a separate option for controlling its own unit test targets, in addition to observing the global `BUILD_TESTING` option. For instance, nlohmann/json has a `JSON_BuildTests` option: 973c52dd4a/CMakeLists.txt (L18)
Also see https://cliutils.gitlab.io/modern-cmake/chapters/testing.html .
This commit adds a `INJA_BUILD_TESTS` flag to address this.
* resync single_include
* Undo PIMPL pattern in Environment
* Environment now supports copy construction and assignment
* Add test for copying Environment
Closes#126
* apply documentation changes to single_include
* retain scope when including a template
* Use data from current scope when rendering an included template.
This allows included templates to access loop variables, which
was not possible before.
* Add test
* throw exception if a file cannot be opened
* Add a new function in utils.hpp: open_file_or_throw: This function
returns an opened std::ifstream or throws by calling `inja_throw`.
* Use this function in Parser::load_file which previously returned an
empty string if the file couldn't be opened.
* Use this function in Environment::load_json which previously threw
a `nlohmann::detail::parse_error` if the file couldn't be opened.
* In Parser::parse_statement: When including files through `include`,
do not attempt to (re-)parse templates from files that were already
included. Additionally, this prevents inja from attempting to load
in-memory templates by their name from disk.
* Add tests that check if an exception is thrown when attempting to
open files that do not exist.
* cmake: enable C++11
* cmake: require C++11 when depending on single_inja
* code style
- You can now update the single include file in a meson build by using
the target 'amalg'.
- The meson build also now builds the single include test suite.
- cmake build updated to use the new script to update the single
include.
