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test_download.cpp
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169 lines (138 loc) · 4.92 KB
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// Test must include gtest before import std to avoid GCC module redefinition errors
#include <gtest/gtest.h>
import mcpplibs.tinyhttps;
import std;
namespace https = mcpplibs::tinyhttps;
// Test download_to_file against a real HTTPS endpoint.
// Uses httpbin.org which returns known-size responses.
class DownloadToFileTest : public ::testing::Test {
protected:
std::filesystem::path tmpDir;
void SetUp() override {
https::Socket::platform_init();
tmpDir = std::filesystem::temp_directory_path() / "tinyhttps_test";
std::filesystem::create_directories(tmpDir);
}
void TearDown() override {
std::error_code ec;
std::filesystem::remove_all(tmpDir, ec);
}
};
TEST_F(DownloadToFileTest, BasicDownloadWithProgress) {
https::HttpClientConfig cfg;
cfg.connectTimeoutMs = 15000;
cfg.readTimeoutMs = 30000;
cfg.keepAlive = false;
https::HttpClient client(cfg);
auto dest = tmpDir / "test_100bytes.bin";
std::int64_t lastTotal = -1;
std::int64_t lastDownloaded = -1;
int callCount = 0;
auto result = client.download_to_file(
"https://httpbin.org/bytes/100",
dest,
[&](std::int64_t total, std::int64_t downloaded) {
lastTotal = total;
lastDownloaded = downloaded;
++callCount;
}
);
ASSERT_TRUE(result.ok()) << "Error: " << result.error;
EXPECT_EQ(result.statusCode, 200);
EXPECT_EQ(result.bytesWritten, 100);
EXPECT_TRUE(std::filesystem::exists(dest));
EXPECT_EQ(std::filesystem::file_size(dest), 100u);
EXPECT_GT(callCount, 0) << "Progress callback should be called at least once";
EXPECT_EQ(lastDownloaded, 100);
EXPECT_EQ(lastTotal, 100);
}
TEST_F(DownloadToFileTest, ProgressIncrementsMonotonically) {
https::HttpClientConfig cfg;
cfg.connectTimeoutMs = 15000;
cfg.readTimeoutMs = 60000;
cfg.keepAlive = false;
https::HttpClient client(cfg);
auto dest = tmpDir / "test_50k.bin";
std::vector<std::int64_t> downloadedValues;
auto result = client.download_to_file(
"https://httpbin.org/bytes/51200",
dest,
[&](std::int64_t total, std::int64_t downloaded) {
(void)total;
downloadedValues.push_back(downloaded);
}
);
ASSERT_TRUE(result.ok()) << "Error: " << result.error;
EXPECT_EQ(result.bytesWritten, 51200);
// Progress must be monotonically increasing
for (std::size_t i = 1; i < downloadedValues.size(); ++i) {
EXPECT_GT(downloadedValues[i], downloadedValues[i - 1])
<< "Progress not monotonic at index " << i;
}
// Must have multiple progress calls for 50KB
EXPECT_GT(downloadedValues.size(), 1u)
<< "50KB download should report progress more than once";
}
TEST_F(DownloadToFileTest, FollowsRedirects) {
https::HttpClientConfig cfg;
cfg.connectTimeoutMs = 15000;
cfg.readTimeoutMs = 30000;
cfg.keepAlive = false;
https::HttpClient client(cfg);
auto dest = tmpDir / "redirected.bin";
// httpbin /redirect-to redirects to the given URL
auto result = client.download_to_file(
"https://httpbin.org/redirect-to?url=https%3A%2F%2Fhttpbin.org%2Fbytes%2F50",
dest
);
ASSERT_TRUE(result.ok()) << "Error: " << result.error;
EXPECT_EQ(result.bytesWritten, 50);
EXPECT_TRUE(std::filesystem::exists(dest));
}
TEST_F(DownloadToFileTest, NoProgressCallbackStillWorks) {
https::HttpClientConfig cfg;
cfg.connectTimeoutMs = 15000;
cfg.readTimeoutMs = 30000;
cfg.keepAlive = false;
https::HttpClient client(cfg);
auto dest = tmpDir / "no_progress.bin";
auto result = client.download_to_file(
"https://httpbin.org/bytes/200",
dest
);
ASSERT_TRUE(result.ok()) << "Error: " << result.error;
EXPECT_EQ(result.bytesWritten, 200);
}
TEST_F(DownloadToFileTest, Http404ReturnsError) {
https::HttpClientConfig cfg;
cfg.connectTimeoutMs = 15000;
cfg.readTimeoutMs = 30000;
cfg.keepAlive = false;
https::HttpClient client(cfg);
auto dest = tmpDir / "not_found.bin";
auto result = client.download_to_file(
"https://httpbin.org/status/404",
dest
);
EXPECT_FALSE(result.ok());
EXPECT_EQ(result.statusCode, 404);
}
TEST_F(DownloadToFileTest, TotalBytesKnownForContentLength) {
https::HttpClientConfig cfg;
cfg.connectTimeoutMs = 15000;
cfg.readTimeoutMs = 30000;
cfg.keepAlive = false;
https::HttpClient client(cfg);
auto dest = tmpDir / "known_size.bin";
std::int64_t reportedTotal = -1;
auto result = client.download_to_file(
"https://httpbin.org/bytes/1024",
dest,
[&](std::int64_t total, [[maybe_unused]] std::int64_t downloaded) {
if (reportedTotal < 0) reportedTotal = total;
}
);
ASSERT_TRUE(result.ok()) << "Error: " << result.error;
// httpbin /bytes/N returns Content-Length: N
EXPECT_EQ(reportedTotal, 1024);
}