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import (
"testing"
"github.com/stretchr/testify/assert"
)
func TestChannelIDsDifference(t *testing.T) {
tests := []struct {
Name string
New []string
Old []string
ExpectedAdditions []string
ExpectedRemovals []string
}{
{
Name: "No change",
New: []string{
"channel-1",
"channel-2",
},
Old: []string{
"channel-2",
"channel-1",
},
},
{
Name: "Add new channel",
New: []string{
"channel-1",
"channel-2",
"channel-3",
},
Old: []string{
"channel-2",
"channel-1",
},
ExpectedAdditions: []string{
"channel-3",
},
},
{
Name: "Remove old channel",
New: []string{
"channel-2",
},
Old: []string{
"channel-2",
"channel-1",
},
ExpectedRemovals: []string{
"channel-1",
},
},
{
Name: "Add and remove channels",
New: []string{
"channel-1",
"channel-3",
},
Old: []string{
"channel-2",
"channel-1",
},
ExpectedAdditions: []string{
"channel-3",
},
ExpectedRemovals: []string{
"channel-2",
},
},
}
for _, test := range tests {
t.Run(test.Name, func(t *testing.T) {
diff := NewChannelIDsDifference(test.New, test.Old)
assert.ElementsMatch(t, test.ExpectedAdditions, diff.Additions())
assert.ElementsMatch(t, test.ExpectedRemovals, diff.Removals())
})
}
}
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