Go basic string slice filter

out.log

=== RUN   Test_remove
=== RUN   Test_remove/want_and_list_are_empty
=== RUN   Test_remove/list_is_empty
=== RUN   Test_remove/list_contains_only_one_occurence_of_wanted
=== RUN   Test_remove/list_contains_only_occurences_of_wanted
=== RUN   Test_remove/list_contains_one_occurence_of_wanted
=== RUN   Test_remove/list_does_not_contain_occurence_of_wanted
--- PASS: Test_remove (0.00s)
    --- PASS: Test_remove/want_and_list_are_empty (0.00s)
    --- PASS: Test_remove/list_is_empty (0.00s)
    --- PASS: Test_remove/list_contains_only_one_occurence_of_wanted (0.00s)
    --- PASS: Test_remove/list_contains_only_occurences_of_wanted (0.00s)
    --- PASS: Test_remove/list_contains_one_occurence_of_wanted (0.00s)
    --- PASS: Test_remove/list_does_not_contain_occurence_of_wanted (0.00s)
PASS

remove.go

package remove

// remove loops over a slice of strings and remove want
func remove(want string, list []string) []string {
	out := []string{}
	for _, e := range list {
		if e != want {
			out = append(out, e)
		}
	}
	return out
}

remove_test.go

package remove

import (
	"reflect"
	"testing"
)

func Test_remove(t *testing.T) {
	type args struct {
		want string
		list []string
	}
	tests := []struct {
		name string
		args args
		want []string
	}{
		{
			name: "want and list are empty",
			args: args{want: "", list: []string{}},
			want: []string{},
		},
		{
			name: "list is empty",
			args: args{want: "a", list: []string{}},
			want: []string{},
		},
		{
			name: "list contains only one occurence of wanted",
			args: args{want: "a", list: []string{"a"}},
			want: []string{},
		},
		{
			name: "list contains only occurences of wanted",
			args: args{want: "a", list: []string{"a", "a", "a"}},
			want: []string{},
		},
		{
			name: "list contains one occurence of wanted",
			args: args{want: "a", list: []string{"b", "a", "c"}},
			want: []string{"b", "c"},
		},
		{
			name: "list does not contain occurence of wanted",
			args: args{want: "a", list: []string{"b", "c", "d"}},
			want: []string{"b", "c", "d"},
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			if got := remove(tt.args.want, tt.args.list); !reflect.DeepEqual(got, tt.want) {
				t.Errorf("remove() = %v, want %v", got, tt.want)
			}
		})
	}
}