kbf/test/test_http.cpp

#include <unity.h>

#include <atomic>

#include "kbf.h"
#include "kbf/wifi.h"
#include "kbf/http/server.h"
#include "kbf/http/client.h"

using namespace kbf;

std::atomic<bool> asyncFinished = {false};

TEST_CASE("HTTP server <--> client / GET, POST, 404, 405", "[kbf_http]") {
    wifi::start();
    auto server = http::Server();

    http::Response (*handleGet)(const http::Request &) = {[](const http::Request &request) {
        TEST_ASSERT_EQUAL(http::GET, request.method);
        return http::Response("OK");
    }};
    server.route({http::GET, "/get-only", handleGet});

    http::Response (*handlePost)(const http::Request &) = {[](const http::Request &request) {
        TEST_ASSERT_EQUAL(http::POST, request.method);
        return http::Response("OK");
    }};
    server.route({http::POST, "/post-only", handlePost});

    http::Response (*handleGetAndPost)(const http::Request &) = {[](const http::Request &request) {
        if (request.method == http::GET) {
            return http::Response("GET");
        } else if (request.method == http::POST) {
            return http::Response("POST");
        } else {
            TEST_FAIL();
            return http::Response("fail"); // unreachable but the compiler moans otherwise
        }
    }};
    server.route({http::GET, "/get-and-post", handleGetAndPost});
    server.route({http::POST, "/get-and-post", handleGetAndPost});

    server.start();

    auto client   = http::Client();
    auto response = client.get("http://localhost/get-only");
    TEST_ASSERT_EQUAL(200, response->status);
    TEST_ASSERT_EQUAL_STRING("OK", response->body.c_str());

    response = client.get("http://localhost/non-existent");
    TEST_ASSERT_EQUAL(404, response->status);
    TEST_ASSERT_EQUAL_STRING("This URI does not exist", response->body.c_str());

    response = client.get("http://localhost/post-only");
    TEST_ASSERT_EQUAL(405, response->status);
    TEST_ASSERT_EQUAL_STRING("Request method for this URI is not handled by server", response->body.c_str());

    response = client.get("http://localhost/get-and-post");
    TEST_ASSERT_EQUAL(200, response->status);
    TEST_ASSERT_EQUAL_STRING("GET", response->body.c_str());

    // TODO test POST once the client can do POST

    wifi::stop();
}

TEST_CASE("HTTP server <--> client / custom headers", "[kbf_http]") {
    wifi::start();
    auto server = http::Server();

    http::Response (*handleContentTypeTest)(const http::Request &) = {[](const http::Request &request) {
        auto response = http::Response("OK");
        if (!request.query.empty() && request.query.at("type") == "txt") {
            response.contentType = "text/plain";
        }
        return response;
    }};
    server.route({http::GET, "/content-type-test", handleContentTypeTest});

    http::Response (*handleCustomHeaderTest)(const http::Request &) = {[](const http::Request &request) {
        auto response = http::Response("OK");
        response.headers["X-Secret"] = request.query.at("secret");
        return response;
    }};
    server.route({http::GET, "/custom-header-test", handleCustomHeaderTest});

    server.start();
    auto client = http::Client();

    auto response = client.get("http://localhost/content-type-test");
    TEST_ASSERT_EQUAL_STRING("text/html", response->headers.at("Content-Type").c_str());
    TEST_ASSERT_EQUAL_STRING("OK", response->body.data());

    response = client.get("http://localhost/content-type-test?type=txt");
    TEST_ASSERT_EQUAL_STRING("text/plain", response->headers.at("Content-Type").c_str());
    TEST_ASSERT_EQUAL_STRING("OK", response->body.data());

    response = client.get("http://localhost/custom-header-test?secret=THISis1337");
    TEST_ASSERT_EQUAL_STRING("THISis1337", response->headers.at("X-Secret").c_str());
    TEST_ASSERT_EQUAL_STRING("OK", response->body.data());

    wifi::stop();
}

TEST_CASE("HTTP server <--> client / async", "[kbf_http]") {
    wifi::start();

    http::Response (*handleRequest)(const http::Request &) = {[](const http::Request &request) {
        auto response = http::Response("OK");
        kbf::sleep(100);
        return response;
    }};
    auto server = http::Server()
            .route({http::GET, "/", handleRequest})
            .start();

    auto client = http::Client(true);
    client.onSuccess = {[](http::Client &client, const http::Response &response) {
        TEST_ASSERT_EQUAL_STRING("OK", response.body.data());
        asyncFinished = true;
    }};

    auto response = client.get("http://localhost/");
    TEST_ASSERT_NULL(response);
    TEST_ASSERT_EQUAL(false, asyncFinished);
    kbf::sleep(200);
    TEST_ASSERT_EQUAL(true, asyncFinished);

    wifi::stop();
}

TEST_CASE("HTTP server <--> client / CORS", "[kbf_http]") {
    TEST_FAIL_MESSAGE("not yet implemented");
}

TEST_CASE("HTTP server <--> client / SPIFFS static route", "[kbf_http]") {
    TEST_FAIL_MESSAGE("not yet implemented");
}