test/src/unit-renderer.cpp

#include "catch.hpp"
#include "json.hpp"
#include "inja.hpp"


using json = nlohmann::json;


TEST_CASE("Renderer") {
	inja::Environment env = inja::Environment();
	json data;
	data["name"] = "Peter";
	data["city"] = "Brunswick";
	data["age"] = 29;
	data["names"] = {"Jeff", "Seb"};
	data["brother"]["name"] = "Chris";
	data["brother"]["daughters"] = {"Maria", "Helen"};
	data["brother"]["daughter0"] = { { "name", "Maria" } };
	data["is_happy"] = true;

	SECTION("Basic") {
		CHECK( env.render("Hello World!", data) == "Hello World!" );
		CHECK( env.render("", data, "../") == "" );
	}

	SECTION("Variables") {
		CHECK( env.render("Hello {{ name }}!", data) == "Hello Peter!" );
		CHECK( env.render("{{ name }}", data) == "Peter" );
		CHECK( env.render("{{name}}", data) == "Peter" );
		CHECK( env.render("{{ name }} is {{ age }} years old.", data) == "Peter is 29 years old." );
		CHECK( env.render("Hello {{ name }}! I come from {{ city }}.", data) == "Hello Peter! I come from Brunswick." );
		CHECK( env.render("Hello {{ names/1 }}!", data) == "Hello Seb!" );
		CHECK( env.render("Hello {{ brother/name }}!", data) == "Hello Chris!" );
		CHECK( env.render("Hello {{ brother/daughter0/name }}!", data) == "Hello Maria!" );
	}

	SECTION("Comments") {
		CHECK( env.render("Hello{# This is a comment #}!", data) == "Hello!" );
		CHECK( env.render("{# --- #Todo --- #}", data) == "" );
	}

	SECTION("Loops") {
		CHECK( env.render("Hello {% for name in names %}{{ name }} {% endfor %}!", data) == "Hello Jeff Seb !" );
		CHECK( env.render("Hello {% for name in names %}{{ index }}: {{ name }}, {% endfor %}!", data) == "Hello 0: Jeff, 1: Seb, !" );
	}

	SECTION("Conditionals") {
		CHECK( env.render("{% if is_happy %}Yeah!{% endif %}", data) == "Yeah!" );
		CHECK( env.render("{% if is_sad %}Yeah!{% endif %}", data) == "" );
		CHECK( env.render("{% if is_sad %}Yeah!{% else %}Nooo...{% endif %}", data) == "Nooo..." );
		CHECK( env.render("{% if age == 29 %}Right{% else %}Wrong{% endif %}", data) == "Right" );
		CHECK( env.render("{% if age > 29 %}Right{% else %}Wrong{% endif %}", data) == "Wrong" );
		CHECK( env.render("{% if age <= 29 %}Right{% else %}Wrong{% endif %}", data) == "Right" );
		CHECK( env.render("{% if age != 28 %}Right{% else %}Wrong{% endif %}", data) == "Right" );
		CHECK( env.render("{% if age >= 30 %}Right{% else %}Wrong{% endif %}", data) == "Wrong" );
		CHECK( env.render("{% if age in [28, 29, 30] %}True{% endif %}", data) == "True" );
	}
}

TEST_CASE("Renderer other syntax") {
	json data;
	data["name"] = "Peter";
	data["names"] = {"Jeff", "Seb"};

	SECTION("Other expression syntax") {
		inja::Environment env = inja::Environment();

		CHECK( env.render("Hello {{ name }}!", data) == "Hello Peter!" );

		env.setExpression("\\(&", "&\\)");

		CHECK( env.render("Hello {{ name }}!", data) == "Hello {{ name }}!" );
		CHECK( env.render("Hello (& name &)!", data) == "Hello Peter!" );
	}

	SECTION("Other comment syntax") {
		inja::Environment env = inja::Environment();
		env.setComment("\\(&", "&\\)");

		CHECK( env.render("Hello {# Test #}", data) == "Hello {# Test #}" );
		CHECK( env.render("Hello (& Test &)", data) == "Hello " );
	}
}