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package overlayutils
import (
"testing"
"gotest.tools/v3/assert"
is "gotest.tools/v3/assert/cmp"
)
func TestAppendVNIList(t *testing.T) {
cases := []struct {
name string
slice []uint32
csv string
want []uint32
wantErr string
}{
{
name: "NilSlice",
csv: "1,2,3",
want: []uint32{1, 2, 3},
},
{
name: "TrailingComma",
csv: "1,2,3,",
want: []uint32{1, 2, 3},
wantErr: `invalid vxlan id value "" passed`,
},
{
name: "EmptySlice",
slice: make([]uint32, 0, 10),
csv: "1,2,3",
want: []uint32{1, 2, 3},
},
{
name: "ExistingSlice",
slice: []uint32{4, 5, 6},
csv: "1,2,3",
want: []uint32{4, 5, 6, 1, 2, 3},
},
{
name: "InvalidVNI",
slice: []uint32{4, 5, 6},
csv: "1,2,3,abc",
want: []uint32{4, 5, 6, 1, 2, 3},
wantErr: `invalid vxlan id value "abc" passed`,
},
{
name: "InvalidVNI2",
slice: []uint32{4, 5, 6},
csv: "abc,1,2,3",
want: []uint32{4, 5, 6},
wantErr: `invalid vxlan id value "abc" passed`,
},
}
for _, tt := range cases {
t.Run(tt.name, func(t *testing.T) {
got, err := AppendVNIList(tt.slice, tt.csv)
assert.Check(t, is.DeepEqual(tt.want, got))
if tt.wantErr == "" {
assert.Check(t, err)
} else {
assert.Check(t, is.ErrorContains(err, tt.wantErr))
}
})
}
t.Run("DoesNotAllocate", func(t *testing.T) {
slice := make([]uint32, 0, 10)
csv := "1,2,3,4,5,6,7,8,9,10"
want := []uint32{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}
allocs := testing.AllocsPerRun(10, func() {
var err error
slice, err = AppendVNIList(slice[:0], csv)
if err != nil {
t.Fatal(err)
}
})
assert.Check(t, is.DeepEqual(slice, want))
assert.Check(t, is.Equal(int(allocs), 0))
})
}
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