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devbox: fix deduping packages and remove lo (jetify-com#37)
devbox: fix deduping packages and remove lo Fix Devbox.Add to deduplicate packages instead of removing the ones with duplicates. Extract the two functions that we were using in lo to remove it as a dependency.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,87 @@ | ||
| package devbox | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "strings" | ||
| "testing" | ||
|
|
||
| "golang.org/x/exp/slices" | ||
| ) | ||
|
|
||
| func TestUnique(t *testing.T) { | ||
| cases := []struct{ in, out []string }{ | ||
| { | ||
| in: []string{"a", "b", "b", "c"}, | ||
| out: []string{"a", "b", "c"}, | ||
| }, | ||
| { | ||
| in: []string{}, | ||
| out: []string{}, | ||
| }, | ||
| { | ||
| in: []string{"a", "b", "c"}, | ||
| out: []string{"a", "b", "c"}, | ||
| }, | ||
| { | ||
| in: []string{"a", "a"}, | ||
| out: []string{"a"}, | ||
| }, | ||
| } | ||
|
|
||
| for _, tc := range cases { | ||
| t.Run(fmt.Sprintf("{%s}", strings.Join(tc.in, ",")), func(t *testing.T) { | ||
| got := unique(tc.in) | ||
| if !slices.Equal(got, tc.out) { | ||
| t.Errorf("Got slice %v, want %v.", got, tc.out) | ||
| } | ||
| }) | ||
| } | ||
| } | ||
|
|
||
| func TestExclude(t *testing.T) { | ||
| cases := []struct{ in, exclude, out []string }{ | ||
| { | ||
| in: []string{}, | ||
| exclude: []string{}, | ||
| out: []string{}, | ||
| }, | ||
| { | ||
| in: []string{}, | ||
| exclude: []string{"a"}, | ||
| out: []string{}, | ||
| }, | ||
| { | ||
| in: []string{"a"}, | ||
| exclude: []string{"a"}, | ||
| out: []string{}, | ||
| }, | ||
| { | ||
| in: []string{"a", "b", "c"}, | ||
| exclude: []string{"b"}, | ||
| out: []string{"a", "c"}, | ||
| }, | ||
| { | ||
| in: []string{"a", "b", "c"}, | ||
| exclude: []string{"a", "b"}, | ||
| out: []string{"c"}, | ||
| }, | ||
| { | ||
| in: []string{"a", "b", "c"}, | ||
| exclude: []string{"a", "d"}, | ||
| out: []string{"b", "c"}, | ||
| }, | ||
| } | ||
|
|
||
| for _, tc := range cases { | ||
| name := fmt.Sprintf("{%s}-{%s}", | ||
| strings.Join(tc.in, ","), | ||
| strings.Join(tc.exclude, ",")) | ||
|
|
||
| t.Run(name, func(t *testing.T) { | ||
| got := exclude(tc.in, tc.exclude) | ||
| if !slices.Equal(got, tc.out) { | ||
| t.Errorf("Got slice %v, want %v.", got, tc.out) | ||
| } | ||
| }) | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,28 @@ | ||
| package devbox | ||
|
|
||
| func unique(s []string) []string { | ||
| deduped := make([]string, 0, len(s)) | ||
| seen := make(map[string]bool, len(s)) | ||
| for _, str := range s { | ||
| if !seen[str] { | ||
| deduped = append(deduped, str) | ||
| } | ||
| seen[str] = true | ||
| } | ||
| return deduped | ||
| } | ||
|
|
||
| func exclude(s []string, elems []string) []string { | ||
| excluded := make(map[string]bool, len(elems)) | ||
| for _, ex := range elems { | ||
| excluded[ex] = true | ||
| } | ||
|
|
||
| filtered := make([]string, 0, len(s)) | ||
| for _, str := range s { | ||
| if !excluded[str] { | ||
| filtered = append(filtered, str) | ||
| } | ||
| } | ||
| return filtered | ||
| } |