This pull request is a minor code cleanup.
From the Go specification (https://go.dev/ref/spec#For_range):
> "1. For a nil slice, the number of iterations is 0."
> "3. If the map is nil, the number of iterations is 0."
`len` returns 0 if the slice or map is nil
(https://pkg.go.dev/builtin#len). Therefore, checking `len(v) > 0`
before a loop is unnecessary.
---
At the time of writing this pull request, there wasn't a lint rule that
catches these issues. The closest I could find is
https://staticcheck.dev/docs/checks/#S103
Signed-off-by: Eng Zer Jun <engzerjun@gmail.com>
From the Go specification:
> "1. For a nil slice, the number of iterations is 0."
https://go.dev/ref/spec#For_range
Therefore, an additional nil check for before the loop is unnecessary.
Signed-off-by: Eng Zer Jun <engzerjun@gmail.com>
A testing cleanup.
This pull request replaces `os.MkdirTemp` with `t.TempDir`. We can use the `T.TempDir` function from the `testing` package to create temporary directory. The directory created by `T.TempDir` is automatically removed when the test and all its subtests complete.
This saves us at least 2 lines (error check, and cleanup) on every instance, or in some cases adds cleanup that we forgot.
Reference: https://pkg.go.dev/testing#T.TempDir
```go
func TestFoo(t *testing.T) {
// before
tmpDir, err := os.MkdirTemp("", "")
require.NoError(t, err)
defer os.RemoveAll(tmpDir)
// now
tmpDir := t.TempDir()
}
```
Signed-off-by: Eng Zer Jun <engzerjun@gmail.com>
Eng Zer JunandGitHub
