#include <gtest/gtest.h>

#include <cstring>
#include <string>

#include "lib/JsonParser/ReleaseJsonParser.h"

namespace {

const char* kRealisticPretty = R"({
  "url": "https://api.github.com/repos/crosspoint-reader/crosspoint-reader/releases/12345",
  "assets_url": "https://api.github.com/repos/crosspoint-reader/crosspoint-reader/releases/12345/assets",
  "upload_url": "https://uploads.github.com/repos/crosspoint-reader/crosspoint-reader/releases/12345/assets{?name,label}",
  "html_url": "https://github.com/crosspoint-reader/crosspoint-reader/releases/tag/v2.4.1",
  "id": 12345,
  "author": {
    "login": "releasebot",
    "id": 99887766,
    "node_id": "MDQ6VXNlcjk5ODg3NzY2",
    "avatar_url": "https://avatars.githubusercontent.com/u/99887766?v=4",
    "url": "https://api.github.com/users/releasebot",
    "type": "User",
    "site_admin": false
  },
  "node_id": "RE_kwDOAbCdEf4AADBN",
  "tag_name": "v2.4.1",
  "target_commitish": "main",
  "name": "CrossPoint Reader v2.4.1",
  "draft": false,
  "prerelease": false,
  "created_at": "2026-04-28T10:00:00Z",
  "published_at": "2026-04-28T10:30:00Z",
  "assets": [
    {
      "url": "https://api.github.com/repos/crosspoint-reader/crosspoint-reader/releases/assets/100001",
      "id": 100001,
      "node_id": "RA_kwDOAbCdEf4AAGHR",
      "name": "crosspoint-reader-v2.4.1-source.zip",
      "label": null,
      "uploader": {
        "login": "releasebot",
        "id": 99887766,
        "node_id": "MDQ6VXNlcjk5ODg3NzY2",
        "type": "User"
      },
      "content_type": "application/zip",
      "state": "uploaded",
      "size": 2048576,
      "download_count": 42,
      "created_at": "2026-04-28T10:15:00Z",
      "updated_at": "2026-04-28T10:15:30Z",
      "browser_download_url": "https://github.com/crosspoint-reader/crosspoint-reader/releases/download/v2.4.1/crosspoint-reader-v2.4.1-source.zip"
    },
    {
      "url": "https://api.github.com/repos/crosspoint-reader/crosspoint-reader/releases/assets/100002",
      "id": 100002,
      "node_id": "RA_kwDOAbCdEf4AAGHS",
      "name": "firmware.bin",
      "label": "ESP32-C3 Firmware",
      "uploader": {
        "login": "releasebot",
        "id": 99887766,
        "node_id": "MDQ6VXNlcjk5ODg3NzY2",
        "type": "User"
      },
      "content_type": "application/octet-stream",
      "state": "uploaded",
      "size": 1572864,
      "download_count": 187,
      "created_at": "2026-04-28T10:16:00Z",
      "updated_at": "2026-04-28T10:16:45Z",
      "browser_download_url": "https://github.com/crosspoint-reader/crosspoint-reader/releases/download/v2.4.1/firmware.bin"
    },
    {
      "url": "https://api.github.com/repos/crosspoint-reader/crosspoint-reader/releases/assets/100003",
      "id": 100003,
      "node_id": "RA_kwDOAbCdEf4AAGHR",
      "name": "checksums.sha256",
      "label": null,
      "uploader": {
        "login": "releasebot",
        "id": 99887766,
        "node_id": "MDQ6VXNlcjk5ODg3NzY2",
        "type": "User"
      },
      "content_type": "text/plain",
      "state": "uploaded",
      "size": 192,
      "download_count": 15,
      "created_at": "2026-04-28T10:17:00Z",
      "updated_at": "2026-04-28T10:17:10Z",
      "browser_download_url": "https://github.com/crosspoint-reader/crosspoint-reader/releases/download/v2.4.1/checksums.sha256"
    }
  ],
  "tarball_url": "https://api.github.com/repos/crosspoint-reader/crosspoint-reader/tarball/v2.4.1",
  "zipball_url": "https://api.github.com/repos/crosspoint-reader/crosspoint-reader/zipball/v2.4.1",
  "body": "## What's Changed\n\n* Fixed orientation crash (#123)\n* Improved EPUB rendering performance\n* Added Serbian translation\n\n**Full Changelog**: https://github.com/crosspoint-reader/crosspoint-reader/compare/v2.4.0...v2.4.1",
  "reactions": {
    "url": "https://api.github.com/repos/crosspoint-reader/crosspoint-reader/releases/12345/reactions",
    "total_count": 5,
    "+1": 3,
    "-1": 0,
    "laugh": 1,
    "hooray": 1,
    "confused": 0,
    "heart": 0,
    "rocket": 0,
    "eyes": 0
  }
})";

const char* kRealisticMinified =
    R"({"url":"https://api.github.com/repos/crosspoint-reader/crosspoint-reader/releases/12345","assets_url":"https://api.github.com/repos/crosspoint-reader/crosspoint-reader/releases/12345/assets","id":12345,"author":{"login":"releasebot","id":99887766,"node_id":"MDQ6VXNlcjk5ODg3NzY2","type":"User","site_admin":false},"tag_name":"v2.4.1","target_commitish":"main","name":"CrossPoint Reader v2.4.1","draft":false,"prerelease":false,"assets":[{"url":"https://api.github.com/repos/crosspoint-reader/crosspoint-reader/releases/assets/100001","id":100001,"name":"crosspoint-reader-v2.4.1-source.zip","uploader":{"login":"releasebot","id":99887766},"content_type":"application/zip","state":"uploaded","size":2048576,"download_count":42,"browser_download_url":"https://github.com/crosspoint-reader/crosspoint-reader/releases/download/v2.4.1/crosspoint-reader-v2.4.1-source.zip"},{"url":"https://api.github.com/repos/crosspoint-reader/crosspoint-reader/releases/assets/100002","id":100002,"name":"firmware.bin","uploader":{"login":"releasebot","id":99887766},"content_type":"application/octet-stream","state":"uploaded","size":1572864,"download_count":187,"browser_download_url":"https://github.com/crosspoint-reader/crosspoint-reader/releases/download/v2.4.1/firmware.bin"},{"url":"https://api.github.com/repos/crosspoint-reader/crosspoint-reader/releases/assets/100003","id":100003,"name":"checksums.sha256","uploader":{"login":"releasebot","id":99887766},"content_type":"text/plain","state":"uploaded","size":192,"download_count":15,"browser_download_url":"https://github.com/crosspoint-reader/crosspoint-reader/releases/download/v2.4.1/checksums.sha256"}],"body":"## What's Changed\n\n* Fixed orientation crash","reactions":{"url":"https://api.github.com/repos/crosspoint-reader/crosspoint-reader/releases/12345/reactions","total_count":5,"+1":3}})";

void feedChunked(ReleaseJsonParser& p, const char* json, size_t chunkSize) {
  size_t len = strlen(json);
  for (size_t off = 0; off < len; off += chunkSize) {
    size_t n = len - off < chunkSize ? len - off : chunkSize;
    p.feed(json + off, n);
  }
}

}  // namespace

TEST(ReleaseJsonParser, RealisticPrettyPrinted) {
  ReleaseJsonParser p;
  p.feed(kRealisticPretty, strlen(kRealisticPretty));

  EXPECT_TRUE(p.foundTag());
  EXPECT_TRUE(p.foundFirmware());
  EXPECT_STREQ(p.getTagName(), "v2.4.1");
  EXPECT_STREQ(p.getFirmwareUrl(),
               "https://github.com/crosspoint-reader/crosspoint-reader/releases/download/v2.4.1/firmware.bin");
  EXPECT_EQ(p.getFirmwareSize(), 1572864u);
}

TEST(ReleaseJsonParser, RealisticMinified) {
  ReleaseJsonParser p;
  p.feed(kRealisticMinified, strlen(kRealisticMinified));

  EXPECT_TRUE(p.foundTag());
  EXPECT_TRUE(p.foundFirmware());
  EXPECT_STREQ(p.getTagName(), "v2.4.1");
  EXPECT_STREQ(p.getFirmwareUrl(),
               "https://github.com/crosspoint-reader/crosspoint-reader/releases/download/v2.4.1/firmware.bin");
  EXPECT_EQ(p.getFirmwareSize(), 1572864u);
}

TEST(ReleaseJsonParser, PrettyAndMinifiedAgree) {
  ReleaseJsonParser pretty;
  pretty.feed(kRealisticPretty, strlen(kRealisticPretty));

  ReleaseJsonParser minified;
  minified.feed(kRealisticMinified, strlen(kRealisticMinified));

  ASSERT_TRUE(pretty.foundTag());
  ASSERT_TRUE(pretty.foundFirmware());
  ASSERT_TRUE(minified.foundTag());
  ASSERT_TRUE(minified.foundFirmware());

  EXPECT_STREQ(pretty.getTagName(), minified.getTagName());
  EXPECT_STREQ(pretty.getFirmwareUrl(), minified.getFirmwareUrl());
  EXPECT_EQ(pretty.getFirmwareSize(), minified.getFirmwareSize());
}

TEST(ReleaseJsonParser, FirmwareNotFirstAsset) {
  const char* json = R"({
      "tag_name": "v1.0.0",
      "assets": [
        {"name": "source.tar.gz", "browser_download_url": "https://example.com/src.tar.gz", "size": 500000},
        {"name": "docs.pdf", "browser_download_url": "https://example.com/docs.pdf", "size": 120000},
        {"name": "firmware.bin", "browser_download_url": "https://example.com/firmware.bin", "size": 987654},
        {"name": "checksums.txt", "browser_download_url": "https://example.com/checksums.txt", "size": 256}
      ]
    })";

  ReleaseJsonParser p;
  p.feed(json, strlen(json));

  EXPECT_TRUE(p.foundTag());
  EXPECT_TRUE(p.foundFirmware());
  EXPECT_STREQ(p.getTagName(), "v1.0.0");
  EXPECT_STREQ(p.getFirmwareUrl(), "https://example.com/firmware.bin");
  EXPECT_EQ(p.getFirmwareSize(), 987654u);
}

TEST(ReleaseJsonParser, FieldOrderUrlBeforeName) {
  const char* json = R"({
      "tag_name": "v3.0",
      "assets": [{
        "browser_download_url": "https://example.com/fw.bin",
        "name": "firmware.bin",
        "size": 2222
      }]
    })";

  ReleaseJsonParser p;
  p.feed(json, strlen(json));

  EXPECT_TRUE(p.foundFirmware());
  EXPECT_STREQ(p.getFirmwareUrl(), "https://example.com/fw.bin");
  EXPECT_EQ(p.getFirmwareSize(), 2222u);
}

TEST(ReleaseJsonParser, FieldOrderSizeBeforeUrl) {
  const char* json = R"({
      "tag_name": "v3.1",
      "assets": [{
        "size": 3333,
        "browser_download_url": "https://example.com/fw2.bin",
        "name": "firmware.bin"
      }]
    })";

  ReleaseJsonParser p;
  p.feed(json, strlen(json));

  EXPECT_TRUE(p.foundFirmware());
  EXPECT_STREQ(p.getFirmwareUrl(), "https://example.com/fw2.bin");
  EXPECT_EQ(p.getFirmwareSize(), 3333u);
}

TEST(ReleaseJsonParser, FieldOrderNameFirst) {
  const char* json = R"({
      "tag_name": "v3.2",
      "assets": [{
        "name": "firmware.bin",
        "size": 4444,
        "browser_download_url": "https://example.com/fw3.bin"
      }]
    })";

  ReleaseJsonParser p;
  p.feed(json, strlen(json));

  EXPECT_TRUE(p.foundFirmware());
  EXPECT_STREQ(p.getFirmwareUrl(), "https://example.com/fw3.bin");
  EXPECT_EQ(p.getFirmwareSize(), 4444u);
}

TEST(ReleaseJsonParser, AssetsBeforeTagName) {
  // tag_name appears after assets in the JSON
  const char* json = R"({
      "name": "Release",
      "assets": [{
        "name": "firmware.bin",
        "browser_download_url": "https://example.com/fw.bin",
        "size": 5555
      }],
      "tag_name": "v4.0"
    })";

  ReleaseJsonParser p;
  p.feed(json, strlen(json));

  EXPECT_TRUE(p.foundTag());
  EXPECT_TRUE(p.foundFirmware());
  EXPECT_STREQ(p.getTagName(), "v4.0");
  EXPECT_STREQ(p.getFirmwareUrl(), "https://example.com/fw.bin");
  EXPECT_EQ(p.getFirmwareSize(), 5555u);
}

TEST(ReleaseJsonParser, ChunkedFeedingSmallChunks) {
  ReleaseJsonParser p;
  feedChunked(p, kRealisticPretty, 64);

  EXPECT_TRUE(p.foundTag());
  EXPECT_TRUE(p.foundFirmware());
  EXPECT_STREQ(p.getTagName(), "v2.4.1");
  EXPECT_STREQ(p.getFirmwareUrl(),
               "https://github.com/crosspoint-reader/crosspoint-reader/releases/download/v2.4.1/firmware.bin");
  EXPECT_EQ(p.getFirmwareSize(), 1572864u);
}

TEST(ReleaseJsonParser, ChunkedFeedingByteByByte) {
  ReleaseJsonParser p;
  feedChunked(p, kRealisticMinified, 1);

  EXPECT_TRUE(p.foundTag());
  EXPECT_TRUE(p.foundFirmware());
  EXPECT_STREQ(p.getTagName(), "v2.4.1");
  EXPECT_EQ(p.getFirmwareSize(), 1572864u);
}

TEST(ReleaseJsonParser, ChunkedFeedingVariousChunkSizes) {
  for (size_t chunkSize : {3u, 7u, 13u, 31u, 97u, 128u, 256u, 512u, 1024u}) {
    ReleaseJsonParser p;
    feedChunked(p, kRealisticPretty, chunkSize);

    EXPECT_TRUE(p.foundTag()) << "chunkSize=" << chunkSize;
    EXPECT_TRUE(p.foundFirmware()) << "chunkSize=" << chunkSize;
    EXPECT_STREQ(p.getTagName(), "v2.4.1") << "chunkSize=" << chunkSize;
    EXPECT_STREQ(p.getFirmwareUrl(),
                 "https://github.com/crosspoint-reader/crosspoint-reader/releases/download/v2.4.1/firmware.bin")
        << "chunkSize=" << chunkSize;
    EXPECT_EQ(p.getFirmwareSize(), 1572864u) << "chunkSize=" << chunkSize;
  }
}

TEST(ReleaseJsonParser, MissingTagName) {
  const char* json = R"({
      "name": "Some Release",
      "draft": false,
      "assets": [{
        "name": "firmware.bin",
        "browser_download_url": "https://example.com/fw.bin",
        "size": 1000
      }]
    })";

  ReleaseJsonParser p;
  p.feed(json, strlen(json));

  EXPECT_FALSE(p.foundTag());
  EXPECT_TRUE(p.foundFirmware());
  EXPECT_STREQ(p.getTagName(), "");
}

TEST(ReleaseJsonParser, MissingFirmwareBinAsset) {
  const char* json = R"({
      "tag_name": "v1.0.0",
      "assets": [
        {"name": "source.zip", "browser_download_url": "https://example.com/src.zip", "size": 1000},
        {"name": "docs.tar.gz", "browser_download_url": "https://example.com/docs.tar.gz", "size": 2000}
      ]
    })";

  ReleaseJsonParser p;
  p.feed(json, strlen(json));

  EXPECT_TRUE(p.foundTag());
  EXPECT_FALSE(p.foundFirmware());
  EXPECT_STREQ(p.getTagName(), "v1.0.0");
  EXPECT_STREQ(p.getFirmwareUrl(), "");
  EXPECT_EQ(p.getFirmwareSize(), 0u);
}

TEST(ReleaseJsonParser, EmptyAssetsArray) {
  const char* json = R"({"tag_name": "v1.0.0", "assets": []})";

  ReleaseJsonParser p;
  p.feed(json, strlen(json));

  EXPECT_TRUE(p.foundTag());
  EXPECT_FALSE(p.foundFirmware());
}

TEST(ReleaseJsonParser, NoAssetsKey) {
  const char* json = R"({"tag_name": "v1.0.0", "name": "Release"})";

  ReleaseJsonParser p;
  p.feed(json, strlen(json));

  EXPECT_TRUE(p.foundTag());
  EXPECT_FALSE(p.foundFirmware());
}

TEST(ReleaseJsonParser, TruncatedBeforeTagValue) {
  const char* json = R"({"tag_name": )";

  ReleaseJsonParser p;
  p.feed(json, strlen(json));

  EXPECT_FALSE(p.foundTag());
  EXPECT_FALSE(p.foundFirmware());
}

TEST(ReleaseJsonParser, TruncatedInsideTagValue) {
  const char* json = R"({"tag_name": "v2.4)";

  ReleaseJsonParser p;
  p.feed(json, strlen(json));

  EXPECT_FALSE(p.foundTag());
}

TEST(ReleaseJsonParser, TruncatedInsideAssetsArray) {
  const char* json = R"({"tag_name": "v2.4.1", "assets": [{"name": "firm)";

  ReleaseJsonParser p;
  p.feed(json, strlen(json));

  EXPECT_TRUE(p.foundTag());
  EXPECT_STREQ(p.getTagName(), "v2.4.1");
  EXPECT_FALSE(p.foundFirmware());
}

TEST(ReleaseJsonParser, TruncatedAfterFirmwareName) {
  // Found the name but connection dropped before URL/size
  const char* json = R"({"tag_name":"v1.0","assets":[{"name":"firmware.bin","browser_dow)";

  ReleaseJsonParser p;
  p.feed(json, strlen(json));

  EXPECT_TRUE(p.foundTag());
  EXPECT_FALSE(p.foundFirmware());
}

TEST(ReleaseJsonParser, TruncatedRealisticJson) {
  std::string full(kRealisticPretty);
  for (size_t cutPoint : {10u, 50u, 100u, 200u, 500u, 1000u, 1500u, 2000u}) {
    if (cutPoint >= full.size()) continue;

    ReleaseJsonParser p;
    p.feed(full.c_str(), cutPoint);
    (void)p.foundTag();
    (void)p.foundFirmware();
  }
  SUCCEED();
}

TEST(ReleaseJsonParser, NestedObjectsInAsset) {
  // Asset with deeply nested "uploader" object -- should not confuse depth tracking
  const char* json = R"({
      "tag_name": "v5.0",
      "assets": [{
        "name": "firmware.bin",
        "uploader": {
          "login": "bot",
          "id": 42,
          "permissions": {"admin": false, "push": true, "pull": true}
        },
        "browser_download_url": "https://example.com/fw5.bin",
        "size": 8888
      }]
    })";

  ReleaseJsonParser p;
  p.feed(json, strlen(json));

  EXPECT_TRUE(p.foundFirmware());
  EXPECT_STREQ(p.getFirmwareUrl(), "https://example.com/fw5.bin");
  EXPECT_EQ(p.getFirmwareSize(), 8888u);
}

TEST(ReleaseJsonParser, NestedObjectsAtTopLevel) {
  // Multiple nested objects at the top level before/after tag_name and assets
  const char* json = R"({
      "author": {"login": "dev", "id": 1, "nested": {"deep": true}},
      "tag_name": "v6.0",
      "reactions": {"url": "https://reactions", "total_count": 0, "+1": 0},
      "assets": [{"name": "firmware.bin", "browser_download_url": "https://fw6", "size": 1111}],
      "mentions_count": 3
    })";

  ReleaseJsonParser p;
  p.feed(json, strlen(json));

  EXPECT_TRUE(p.foundTag());
  EXPECT_TRUE(p.foundFirmware());
  EXPECT_STREQ(p.getTagName(), "v6.0");
  EXPECT_EQ(p.getFirmwareSize(), 1111u);
}

TEST(ReleaseJsonParser, ArraysAtTopLevel) {
  // A non-assets array at the top level should not interfere
  const char* json = R"({
      "tag_name": "v7.0",
      "labels": ["release", "stable"],
      "assets": [{"name": "firmware.bin", "browser_download_url": "https://fw7", "size": 7070}]
    })";

  ReleaseJsonParser p;
  p.feed(json, strlen(json));

  EXPECT_TRUE(p.foundTag());
  EXPECT_TRUE(p.foundFirmware());
  EXPECT_STREQ(p.getTagName(), "v7.0");
  EXPECT_EQ(p.getFirmwareSize(), 7070u);
}

TEST(ReleaseJsonParser, ResetAndReuse) {
  ReleaseJsonParser p;

  const char* json1 =
      R"({"tag_name":"v1.0","assets":[{"name":"firmware.bin","browser_download_url":"https://a","size":1}]})";
  p.feed(json1, strlen(json1));
  EXPECT_TRUE(p.foundTag());
  EXPECT_STREQ(p.getTagName(), "v1.0");
  EXPECT_STREQ(p.getFirmwareUrl(), "https://a");
  EXPECT_EQ(p.getFirmwareSize(), 1u);

  p.reset();

  const char* json2 =
      R"({"tag_name":"v2.0","assets":[{"name":"firmware.bin","browser_download_url":"https://b","size":2}]})";
  p.feed(json2, strlen(json2));
  EXPECT_TRUE(p.foundTag());
  EXPECT_STREQ(p.getTagName(), "v2.0");
  EXPECT_STREQ(p.getFirmwareUrl(), "https://b");
  EXPECT_EQ(p.getFirmwareSize(), 2u);
}

TEST(ReleaseJsonParser, ResetClearsState) {
  ReleaseJsonParser p;

  const char* json =
      R"({"tag_name":"v1.0","assets":[{"name":"firmware.bin","browser_download_url":"https://a","size":100}]})";
  p.feed(json, strlen(json));
  EXPECT_TRUE(p.foundTag());
  EXPECT_TRUE(p.foundFirmware());

  p.reset();

  EXPECT_FALSE(p.foundTag());
  EXPECT_FALSE(p.foundFirmware());
  EXPECT_STREQ(p.getTagName(), "");
  EXPECT_STREQ(p.getFirmwareUrl(), "");
  EXPECT_EQ(p.getFirmwareSize(), 0u);
}

TEST(ReleaseJsonParser, PartialAssetNameMatch) {
  // "firmware.bin.bak" should NOT match "firmware.bin"
  const char* json = R"({
      "tag_name": "v1.0",
      "assets": [
        {"name": "firmware.bin.bak", "browser_download_url": "https://bak", "size": 100},
        {"name": "firmware.bin.old", "browser_download_url": "https://old", "size": 200}
      ]
    })";

  ReleaseJsonParser p;
  p.feed(json, strlen(json));

  EXPECT_TRUE(p.foundTag());
  EXPECT_FALSE(p.foundFirmware());
}

TEST(ReleaseJsonParser, FirmwareBinExactMatch) {
  // Only exact "firmware.bin" matches, not similar names
  const char* json = R"({
      "tag_name": "v1.0",
      "assets": [
        {"name": "FIRMWARE.BIN", "browser_download_url": "https://upper", "size": 100},
        {"name": "firmware.bin", "browser_download_url": "https://exact", "size": 200},
        {"name": "firmware.bin2", "browser_download_url": "https://suffix", "size": 300}
      ]
    })";

  ReleaseJsonParser p;
  p.feed(json, strlen(json));

  EXPECT_TRUE(p.foundFirmware());
  EXPECT_STREQ(p.getFirmwareUrl(), "https://exact");
  EXPECT_EQ(p.getFirmwareSize(), 200u);
}

TEST(ReleaseJsonParser, LargeSize) {
  // 16MB firmware (maximum flash size)
  const char* json =
      R"({"tag_name":"v1.0","assets":[{"name":"firmware.bin","browser_download_url":"https://fw","size":16777216}]})";

  ReleaseJsonParser p;
  p.feed(json, strlen(json));

  EXPECT_EQ(p.getFirmwareSize(), 16777216u);
}

TEST(ReleaseJsonParser, SizeZero) {
  const char* json =
      R"({"tag_name":"v1.0","assets":[{"name":"firmware.bin","browser_download_url":"https://fw","size":0}]})";

  ReleaseJsonParser p;
  p.feed(json, strlen(json));

  EXPECT_TRUE(p.foundFirmware());
  EXPECT_EQ(p.getFirmwareSize(), 0u);
}

TEST(ReleaseJsonParser, MinimalValidJson) {
  const char* json = R"({"tag_name":"v0","assets":[{"name":"firmware.bin","browser_download_url":"u","size":1}]})";

  ReleaseJsonParser p;
  p.feed(json, strlen(json));

  EXPECT_TRUE(p.foundTag());
  EXPECT_TRUE(p.foundFirmware());
  EXPECT_STREQ(p.getTagName(), "v0");
  EXPECT_STREQ(p.getFirmwareUrl(), "u");
  EXPECT_EQ(p.getFirmwareSize(), 1u);
}

TEST(ReleaseJsonParser, ChunkedRealisticEveryBoundary) {
  // Two-chunk split at every byte boundary on a compact JSON
  const char* json =
      R"({"tag_name":"v2.0","assets":[{"name":"firmware.bin","browser_download_url":"https://example.com/fw","size":9999}]})";
  size_t len = strlen(json);

  for (size_t split = 0; split <= len; ++split) {
    ReleaseJsonParser p;
    if (split > 0) p.feed(json, split);
    if (split < len) p.feed(json + split, len - split);

    EXPECT_TRUE(p.foundTag()) << "split=" << split;
    EXPECT_TRUE(p.foundFirmware()) << "split=" << split;
    EXPECT_STREQ(p.getTagName(), "v2.0") << "split=" << split;
    EXPECT_STREQ(p.getFirmwareUrl(), "https://example.com/fw") << "split=" << split;
    EXPECT_EQ(p.getFirmwareSize(), 9999u) << "split=" << split;
  }
}