diff --git a/tools/test_build_system/buildv2/test_project.py b/tools/test_build_system/buildv2/test_project.py
new file mode 100644
index 0000000000..92d40dd660
--- /dev/null
+++ b/tools/test_build_system/buildv2/test_project.py
@@ -0,0 +1,118 @@
+# SPDX-FileCopyrightText: 2026 Espressif Systems (Shanghai) CO LTD
+# SPDX-License-Identifier: Apache-2.0
+import json
+import logging
+import subprocess
+from pathlib import Path
+
+import pytest
+from test_build_system_helpers import IdfPyFunc
+from test_build_system_helpers import replace_in_file
+
+
+@pytest.mark.usefixtures('test_app_copy')
+def test_project_init_explicit_steps_without_binary(idf_py: IdfPyFunc) -> None:
+    """idf_project_init() + idf_build_executable() produces ELF but no .bin when idf_build_binary() is omitted."""
+    logging.info('Testing idf_project_init with explicit steps but without idf_build_binary')
+
+    replace_in_file(
+        'CMakeLists.txt',
+        'idf_project_default()',
+        'idf_project_init()\n'
+        'idf_build_executable(build_test_app COMPONENTS main)\n'
+        'idf_build_generate_metadata(EXECUTABLE build_test_app)\n',
+    )
+
+    idf_py('build')
+    assert Path('build/project_description.json').exists(), 'project_description.json not produced'
+    assert Path('build/build_test_app.elf').exists(), 'ELF not created despite idf_build_executable()'
+    assert not Path('build/build_test_app.bin').exists(), '.bin should not exist when idf_build_binary() is omitted'
+
+
+@pytest.mark.usefixtures('test_app_copy')
+def test_project_default_produces_all_artifacts(idf_py: IdfPyFunc) -> None:
+    """idf_project_default() should produce ELF, .bin, project_description.json,
+    flasher_args.json, and standard build targets (menuconfig, uf2, size)."""
+    logging.info('Testing idf_project_default full artifact generation')
+
+    idf_py('build')
+
+    assert Path('build/build_test_app.elf').exists(), 'ELF not produced'
+    assert Path('build/build_test_app.bin').exists(), '.bin not produced'
+    assert Path('build/project_description.json').exists(), 'project_description.json not produced'
+    assert Path('build/flasher_args.json').exists(), 'flasher_args.json not produced'
+
+    flasher_args = json.loads(Path('build/flasher_args.json').read_text())
+    assert 'flash_files' in flasher_args, 'flasher_args.json should contain flash_files'
+
+    ninja_targets_result = subprocess.run(
+        ['ninja', '-t', 'targets', 'all'],
+        capture_output=True,
+        text=True,
+        cwd='build',
+        check=True,
+    )
+    ninja_targets = ninja_targets_result.stdout
+    for target in (
+        'menuconfig',
+        'confserver',
+        'save-defconfig',
+        'config-report',
+        'uf2',
+        'uf2-app',
+        'size',
+        'app-flash',
+    ):
+        assert f'{target}:' in ninja_targets, f'"{target}" target not found in ninja targets'
+
+
+@pytest.mark.usefixtures('test_app_copy')
+def test_project_init_requires_cmake_project(idf_py: IdfPyFunc) -> None:
+    """idf_project_init() called before cmake project() should fail."""
+    logging.info('Testing idf_project_init before project() fails')
+
+    replace_in_file('CMakeLists.txt', '# placeholder_after_include_project_cmake', 'idf_project_init()\n')
+    replace_in_file('CMakeLists.txt', 'idf_project_default()', '# project_default removed for ordering test\n')
+
+    cmake_content = Path('CMakeLists.txt').read_text()
+    assert 'idf_project_init()' in cmake_content, 'replace_in_file did not inject idf_project_init()'
+
+    with pytest.raises(subprocess.CalledProcessError):
+        idf_py('reconfigure')
+
+
+@pytest.mark.usefixtures('test_app_copy')
+def test_build_generate_flasher_args(idf_py: IdfPyFunc) -> None:
+    """idf_build_generate_flasher_args() generates flasher_args.json with correct content."""
+    logging.info('Testing idf_build_generate_flasher_args flasher_args.json generation')
+
+    replace_in_file(
+        'CMakeLists.txt',
+        'idf_project_default()',
+        'idf_project_init()\n'
+        'idf_build_executable(build_test_app COMPONENTS main)\n'
+        'idf_build_binary(build_test_app\n'
+        '    OUTPUT_FILE "${CMAKE_BINARY_DIR}/build_test_app.bin"\n'
+        '    TARGET build_test_app_binary)\n'
+        'idf_flash_binary(build_test_app_binary\n'
+        '    TARGET app-flash\n'
+        '    NAME "app"\n'
+        '    FLASH)\n'
+        'idf_check_binary_size(build_test_app_binary)\n'
+        'add_custom_target(app ALL DEPENDS build_test_app_binary)\n'
+        'idf_build_generate_metadata(BINARY build_test_app_binary)\n'
+        'idf_build_generate_flasher_args()\n',
+    )
+
+    idf_py('build')
+
+    # Verify flasher_args.json is created
+    flasher_args_path = Path('build/flasher_args.json')
+    assert flasher_args_path.exists(), 'flasher_args.json not generated by idf_build_generate_flasher_args'
+
+    # Verify flasher_args.json contains expected structure
+    flasher_args = json.loads(flasher_args_path.read_text())
+    assert 'flash_files' in flasher_args, 'flasher_args.json should contain flash_files key'
+    assert 'flash_settings' in flasher_args, 'flasher_args.json should contain flash_settings key'
+    assert 'extra_esptool_args' in flasher_args, 'flasher_args.json should contain extra_esptool_args'
+    assert 'chip' in flasher_args.get('extra_esptool_args', {}), 'extra_esptool_args should contain chip information'