If you encounter the 'redis make test fails' error, it means that Redis is failing to pass its own test suite during the build process. The reasons for this error could vary and might relate to the system configuration, dependencies, or even the Redis source code.
The error could occur due to an outdated version of Redis or its dependencies, incorrect configurations in the system environment variables such as PATH variable, compilation or linkage issues used to build Redis, or syntax errors and compatibility problems with the current system.
To resolve the 'redis make test fails' error, there are a few things you could try. Ensure you have the latest version of Redis and its dependencies installed, or reinstall Redis from scratch to guarantee all dependencies and configurations are properly set up.
Confirm that the system environment variables are correctly set up, especially the PATH variable. Ensure that the paths to the Redis executable and dependencies are included in the PATH variable. Alternatively, try building Redis from the source using a different compiler or linker to troubleshoot the issue.
If none of the above solutions work, debug the Redis source code. Check for any syntax errors or compatibility issues with the current system. You may also execute 'make test' manually to see where exactly the tests are failing and identify what is causing the problem and how to fix it.