Add file-driven image import automation

tests/CMakeLists.txt

@@ -262,6 +262,15 @@ if(TARGET pano_cli)
         LABELS "assets;integration;desktop-fast"
         PASS_REGULAR_EXPRESSION "\"format\":\"png\".*\"width\":320.*\"height\":240.*\"components\":4.*\"colorType\":\"rgba\"")
 
+    add_test(NAME pano_cli_import_image_rejects_truncated_png
+        COMMAND "${CMAKE_COMMAND}"
+            -DPANO_CLI=$<TARGET_FILE:pano_cli>
+            -DIMAGE_PATH=${CMAKE_CURRENT_SOURCE_DIR}/data/images/tiny-rgba-header.png
+            "-DEXPECTED_OUTPUT=PNG payload could not be decoded"
+            -P "${CMAKE_CURRENT_SOURCE_DIR}/cmake/expect_pano_cli_import_image_failure.cmake")
+    set_tests_properties(pano_cli_import_image_rejects_truncated_png PROPERTIES
+        LABELS "assets;document;integration;desktop-fast")
+
     add_test(NAME pano_cli_inspect_project_layout_smoke
         COMMAND pano_cli inspect-project --path "${CMAKE_CURRENT_SOURCE_DIR}/data/projects/minimal-project.ppi")
     set_tests_properties(pano_cli_inspect_project_layout_smoke PROPERTIES

tests/cmake/expect_pano_cli_import_image_failure.cmake

@@ -0,0 +1,28 @@
+if(NOT DEFINED PANO_CLI)
+    message(FATAL_ERROR "PANO_CLI must be set")
+endif()
+
+if(NOT DEFINED IMAGE_PATH)
+    message(FATAL_ERROR "IMAGE_PATH must be set")
+endif()
+
+if(NOT DEFINED EXPECTED_OUTPUT)
+    message(FATAL_ERROR "EXPECTED_OUTPUT must be set")
+endif()
+
+execute_process(
+    COMMAND "${PANO_CLI}" import-image --path "${IMAGE_PATH}"
+    RESULT_VARIABLE result
+    OUTPUT_VARIABLE output
+    ERROR_VARIABLE error)
+
+if(result EQUAL 0)
+    message(FATAL_ERROR "Expected pano_cli import-image to fail, but it exited 0")
+endif()
+
+set(combined_output "${output}${error}")
+string(FIND "${combined_output}" "${EXPECTED_OUTPUT}" expected_index)
+if(expected_index LESS 0)
+    message(FATAL_ERROR
+        "Expected output to contain '${EXPECTED_OUTPUT}', got: ${combined_output}")
+endif()