diff --git a/CMakeLists.txt b/CMakeLists.txt
index ca498cfeab..a718ee80ad 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -39,6 +39,16 @@ else()
         add_subdirectory( "${CORE_ROOT_DIR}/OfficeUtils/tests" officeutils_test )
         add_subdirectory( "${CORE_ROOT_DIR}/OdfFile/Reader/Converter/SMCustomShape2OOXML/TestSMCustomShape" starmath_smcustomshape_test )
         add_subdirectory( "${CORE_ROOT_DIR}/OdfFile/Test/test_odf" test_odf )
+
+        # doctrenderer (V8) gtest suites. The V8 monolith is built in CI by
+        # common.cmake (build_3rdparty.py) and is self-contained at run time:
+        # the x64-linux build sets v8_use_external_startup_data=false (snapshot
+        # embedded in the monolith) and v8_enable_i18n_support=false (no external
+        # icudtl.dat), so CJSContext initializes with no external runtime data
+        # files. These suites build all JS inline via runScript() — no fixtures.
+        add_subdirectory( "${CORE_ROOT_DIR}/DesktopEditor/doctrenderer/test/json" doctrenderer_json_test )
+        add_subdirectory( "${CORE_ROOT_DIR}/DesktopEditor/doctrenderer/test/js_internal" doctrenderer_jsinternal_test )
+        add_subdirectory( "${CORE_ROOT_DIR}/DesktopEditor/doctrenderer/test/embed/internal/hash" doctrenderer_hash_test )
     endif()
 
 endif()
diff --git a/DesktopEditor/doctrenderer/test/embed/internal/hash/CMakeLists.txt b/DesktopEditor/doctrenderer/test/embed/internal/hash/CMakeLists.txt
new file mode 100644
index 0000000000..102254da97
--- /dev/null
+++ b/DesktopEditor/doctrenderer/test/embed/internal/hash/CMakeLists.txt
@@ -0,0 +1,36 @@
+cmake_minimum_required(VERSION 3.10)
+
+project(doctrenderer_hash_test)
+
+# test/embed/internal/hash is 6 levels under the core root.
+set(CORE_ROOT_DIR "${CMAKE_CURRENT_LIST_DIR}/../../../../../..")
+
+include(${CORE_ROOT_DIR}/common.cmake)
+
+# Dependencies (mirror ADD_DEPENDENCY(doctrenderer) in test.pro).
+if(NOT TARGET doctrenderer)
+    add_subdirectory(${CORE_ROOT_DIR}/DesktopEditor/doctrenderer doctrenderer)
+endif()
+
+# main.cpp has no int main() of its own (no *_GOOGLE_TEST guard) -> use GTEST_MAIN.
+# No extra google-test define for this suite.
+add_core_gtest(
+    NAME    doctrenderer_hash_test
+    SOURCES main.cpp
+    LIBS    doctrenderer
+    GTEST_MAIN
+)
+
+# INCLUDEPATH += $$CORE_ROOT_DIR/DesktopEditor/doctrenderer
+# (for embed/Default.h, hash.h, js_internal/js_base.h)
+target_include_directories(doctrenderer_hash_test PRIVATE
+    ${CORE_ROOT_DIR}/DesktopEditor/doctrenderer
+)
+
+# core_linux { LIBS += -Wl,-unresolved-symbols=ignore-in-shared-libs -ldl }
+if(LINUX)
+    target_link_options(doctrenderer_hash_test PRIVATE
+        "-Wl,-unresolved-symbols=ignore-in-shared-libs"
+    )
+    target_link_libraries(doctrenderer_hash_test PRIVATE dl)
+endif()
diff --git a/DesktopEditor/doctrenderer/test/embed/internal/hash/main.cpp b/DesktopEditor/doctrenderer/test/embed/internal/hash/main.cpp
index 32e3b4883a..fb68d4bd48 100644
--- a/DesktopEditor/doctrenderer/test/embed/internal/hash/main.cpp
+++ b/DesktopEditor/doctrenderer/test/embed/internal/hash/main.cpp
@@ -1,6 +1,7 @@
 #include "gtest/gtest.h"
 
 #include <sstream>
+#include <iomanip>
 #include <string>
 
 #include "embed/Default.h"
diff --git a/DesktopEditor/doctrenderer/test/js_internal/CMakeLists.txt b/DesktopEditor/doctrenderer/test/js_internal/CMakeLists.txt
new file mode 100644
index 0000000000..c51a7506b4
--- /dev/null
+++ b/DesktopEditor/doctrenderer/test/js_internal/CMakeLists.txt
@@ -0,0 +1,40 @@
+cmake_minimum_required(VERSION 3.10)
+
+project(doctrenderer_jsinternal_test)
+
+# test/js_internal is 4 levels under the core root.
+set(CORE_ROOT_DIR "${CMAKE_CURRENT_LIST_DIR}/../../../..")
+
+include(${CORE_ROOT_DIR}/common.cmake)
+
+# Dependencies (mirror ADD_DEPENDENCY(doctrenderer) in test.pro).
+if(NOT TARGET doctrenderer)
+    add_subdirectory(${CORE_ROOT_DIR}/DesktopEditor/doctrenderer doctrenderer)
+endif()
+
+# main.cpp guards its own int main() behind #ifndef JS_INTERNAL_GOOGLE_TEST, so
+# with the define active the suite has no main() of its own -> use GTEST_MAIN.
+add_core_gtest(
+    NAME    doctrenderer_jsinternal_test
+    SOURCES main.cpp
+    LIBS    doctrenderer
+    GTEST_MAIN
+)
+
+# CONFIG += js_internal_google_test -> DEFINES += JS_INTERNAL_GOOGLE_TEST
+target_compile_definitions(doctrenderer_jsinternal_test PRIVATE
+    JS_INTERNAL_GOOGLE_TEST
+)
+
+# INCLUDEPATH += ../.. (the doctrenderer source root, for js_internal/js_base.h etc.)
+target_include_directories(doctrenderer_jsinternal_test PRIVATE
+    ${CORE_ROOT_DIR}/DesktopEditor/doctrenderer
+)
+
+# core_linux { LIBS += -Wl,-unresolved-symbols=ignore-in-shared-libs -ldl }
+if(LINUX)
+    target_link_options(doctrenderer_jsinternal_test PRIVATE
+        "-Wl,-unresolved-symbols=ignore-in-shared-libs"
+    )
+    target_link_libraries(doctrenderer_jsinternal_test PRIVATE dl)
+endif()
diff --git a/DesktopEditor/doctrenderer/test/json/CMakeLists.txt b/DesktopEditor/doctrenderer/test/json/CMakeLists.txt
new file mode 100644
index 0000000000..e52b450207
--- /dev/null
+++ b/DesktopEditor/doctrenderer/test/json/CMakeLists.txt
@@ -0,0 +1,40 @@
+cmake_minimum_required(VERSION 3.10)
+
+project(doctrenderer_json_test)
+
+# test/json is 4 levels under the core root.
+set(CORE_ROOT_DIR "${CMAKE_CURRENT_LIST_DIR}/../../../..")
+
+include(${CORE_ROOT_DIR}/common.cmake)
+
+# Dependencies (mirror ADD_DEPENDENCY(doctrenderer) in test.pro).
+if(NOT TARGET doctrenderer)
+    add_subdirectory(${CORE_ROOT_DIR}/DesktopEditor/doctrenderer doctrenderer)
+endif()
+
+# main.cpp guards its own int main() behind #ifndef JSON_GOOGLE_TEST, so with
+# the define active the suite has no main() of its own -> use GTEST_MAIN.
+add_core_gtest(
+    NAME    doctrenderer_json_test
+    SOURCES main.cpp
+    LIBS    doctrenderer
+    GTEST_MAIN
+)
+
+# CONFIG += json_google_test -> DEFINES += JSON_GOOGLE_TEST
+target_compile_definitions(doctrenderer_json_test PRIVATE
+    JSON_GOOGLE_TEST
+)
+
+# INCLUDEPATH += ../.. (the doctrenderer source root, for json/serialization.h etc.)
+target_include_directories(doctrenderer_json_test PRIVATE
+    ${CORE_ROOT_DIR}/DesktopEditor/doctrenderer
+)
+
+# core_linux { LIBS += -Wl,-unresolved-symbols=ignore-in-shared-libs -ldl }
+if(LINUX)
+    target_link_options(doctrenderer_json_test PRIVATE
+        "-Wl,-unresolved-symbols=ignore-in-shared-libs"
+    )
+    target_link_libraries(doctrenderer_json_test PRIVATE dl)
+endif()
diff --git a/DesktopEditor/doctrenderer/test/json/main.cpp b/DesktopEditor/doctrenderer/test/json/main.cpp
index e5c6a0e52d..cfe3eed369 100644
--- a/DesktopEditor/doctrenderer/test/json/main.cpp
+++ b/DesktopEditor/doctrenderer/test/json/main.cpp
@@ -13,6 +13,14 @@ using namespace NSJSON;
 
 #ifdef JSON_GOOGLE_TEST
 
+// NSJSON::ImageFormat is an `enum class`, so its enumerators are not visible
+// unqualified. These tests reference them bare (e.g. `ifBGRA`); bring them into
+// scope so the suite compiles.
+static constexpr ImageFormat ifRGBA    = ImageFormat::ifRGBA;
+static constexpr ImageFormat ifBGRA    = ImageFormat::ifBGRA;
+static constexpr ImageFormat ifARGB    = ImageFormat::ifARGB;
+static constexpr ImageFormat ifInvalid = ImageFormat::ifInvalid;
+
 class CJSONTest : public testing::Test
 {
 public:
diff --git a/TESTING.md b/TESTING.md
index 4835b8aff1..35ca8376d6 100644
--- a/TESTING.md
+++ b/TESTING.md
@@ -98,6 +98,23 @@ Done:
       `ExampleFiles/motion.odp` is working-dir-relative). The committed `common.cpp` had
       absolute Windows include paths and a `#pragma comment(lib, ...)` block; these were
       replaced with repo-relative includes (CMake links the libraries).
+- [x] `DesktopEditor/doctrenderer/test/json` — dep: doctrenderer (V8). Define
+      `JSON_GOOGLE_TEST`; own `main()` is compiled out under that define, so `GTEST_MAIN`.
+      No fixtures (JS built inline via `runScript`).
+- [x] `DesktopEditor/doctrenderer/test/js_internal` — dep: doctrenderer (V8). Define
+      `JS_INTERNAL_GOOGLE_TEST`; own `main()` is compiled out under that define, so
+      `GTEST_MAIN`. No fixtures.
+- [x] `DesktopEditor/doctrenderer/test/embed/internal/hash` — dep: doctrenderer (V8). No
+      google-test define; no own `main()`, so `GTEST_MAIN`. No fixtures.
+
+  **V8 runtime requirement (satisfied in CI):** these three suites instantiate
+  `CJSContext`, which initializes a V8 isolate. The V8 monolith is built in CI by
+  `common.cmake` (`build_3rdparty.py`, populating `V8_INSTALL_DIR`) and is self-contained
+  at run time: the x64-linux V8 build sets `v8_use_external_startup_data=false` (startup
+  snapshot is linked into the monolith) and `v8_enable_i18n_support=false` (no external
+  `icudtl.dat`), so no external V8 runtime data files need to be staged next to the test
+  binaries. The `doctrenderer` shared library these suites link is already built in CI
+  (the `docbuilder` app links it), so the suites run headless without extra provisioning.
 
 ### gtest suites to migrate
 
@@ -110,10 +127,6 @@ Blocked / need extra work (build targets intentionally not created yet):
 - [ ] `PdfFile/test` — **fixtures not in repo** (`test.pdf`, `pdf.bin`, `base64.txt`,
       `pfx.pfx`, `test.djvu`, `changes.bin`, fonts). Needs fixtures committed before it can
       pass headless.
-- [ ] `DesktopEditor/doctrenderer/test/json`
-- [ ] `DesktopEditor/doctrenderer/test/js_internal`
-- [ ] `DesktopEditor/doctrenderer/test/embed/internal/hash` — the three doctrenderer suites
-      need a **V8 JS runtime** (and embedded scripts) at run time.
 - [ ] `DesktopEditor/xmlsec/src/osign/test` — **no `osign` CMake target exists**; the
       library must be ported to CMake first.