You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: vm_test.go
    path of file: ./repos/cockroach/pkg/roachprod/vm
    
    the code of the file until where you have to start completion: // Copyright 2018 The Cockroach Authors.
//
// Use of this software is governed by the Business Source License
// included in the file licenses/BSL.txt.
//
// As of the 
    
func TestParseArch(t *testing.T) {
	cases := []struct {
		arch     string
		expected CPUArch
	}{
		{"amd64", ArchAMD64},
		{"arm64", ArchARM64},
		{"Intel", ArchAMD64},
		{"x86_64", ArchAMD64},
		{"aarch64", ArchARM64},
		{"Intel Cascade Lake", ArchAMD64},
		{"Ampere Altra", ArchARM64},
		// E.g., GCE returns this when VM is still being provisioned.
		{"Unknown CPU Platform", ArchUnknown},
	}

	for _, c := range cases {
		t.Run(c.arch, func(t *testing.T) {
			assert.EqualValues(t, c.expected, ParseArch(c.arch))
		})
	}
}