C++ / CMake / VSCode - Tasks for building and testing (using ModernCppStarter). Swap out `GreeterTests` with your test file's name.

tasks.json

{
    "version": "2.0.0",
    "tasks": [
        {
            "type": "shell",
            "label": "CMake: build",
            "command": "cmake --build build/standalone",
            "group": "build",
            "problemMatcher": [],
            "detail": "CMake build task"
        },
        {
            "type": "shell",
            "label": "CMake: build init",
            "command": "cmake -S standalone -B build/standalone",
            "group": "build",
            "problemMatcher": [],
            "detail": "CMake initialize build task"
        },
        {
            "type": "shell",
            "label": "CMake: test init",
            "command": "cmake -S test -B build/test",
            "group": "test",
            "problemMatcher": [],
            "detail": "CMake initialize test task"
        },
        {
            "type": "shell",
            "label": "CMake: test",
            "command": "cmake --build build/test; ${workspaceFolder}/build/test/Debug/GreeterTests.exe",
            "group": "test",
            "problemMatcher": [],
            "detail": "CMake build test task"
        },
    ]
}