Why Does 'go test' Show 'no tests to run' Even With a Test Function?

Why "no tests to run" Despite Having a Test Function

Go testing requires a specific naming convention for test functions. The function name must begin with an uppercase letter "T" and follow the format TestXxx(t *testing.T).

In the provided code snippet, the test function is named testNormalizePhoneNum, which violates this convention. The testing tool ignores this function, resulting in the "no tests to run" message.

Solution:

To fix this issue, rename the test function to TestNormalizePhoneNum with an uppercase "T":

package main

import (
    "testing"
)

func TestNormalizePhoneNum(t *testing.T) {
    // ...
}

Alternative Solution:

Alternatively, you can force the testing tool to run the function by using the -run flag:

go test -run=testNormalizePhoneNum

However, this approach is not recommended as it bypasses the standard naming convention.

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