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-rw-r--r--pkg/config/config.go15
-rw-r--r--pkg/u/util.go17
-rw-r--r--pkg/u/util_test.go96
3 files changed, 117 insertions, 11 deletions
diff --git a/pkg/config/config.go b/pkg/config/config.go
index ba1614f..776c698 100644
--- a/pkg/config/config.go
+++ b/pkg/config/config.go
@@ -5,6 +5,7 @@ import (
"io"
"strconv"
+ "git.gabrielgio.me/cerrado/pkg/u"
"git.sr.ht/~emersion/go-scfg"
)
@@ -56,9 +57,9 @@ func setScan(block scfg.Block, scan *Scan) error {
}
func setBool(dir *scfg.Directive, field *bool) error {
-
if dir != nil {
- p1 := first(dir.Params)
+
+ p1, _ := u.First(dir.Params)
v, err := strconv.ParseBool(p1)
if err != nil {
return fmt.Errorf("Error parsing bool param of %s: %w", dir.Name, err)
@@ -70,15 +71,7 @@ func setBool(dir *scfg.Directive, field *bool) error {
func setString(dir *scfg.Directive, field *string) error {
if dir != nil {
- *field = first(dir.Params)
+ *field, _ = u.First(dir.Params)
}
return nil
}
-
-func first[T any](v []T) T {
- if len(v) == 0 {
- var zero T
- return zero
- }
- return v[0]
-}
diff --git a/pkg/u/util.go b/pkg/u/util.go
new file mode 100644
index 0000000..34eafd1
--- /dev/null
+++ b/pkg/u/util.go
@@ -0,0 +1,17 @@
+package u
+
+func First[T any](v []T) (T, bool) {
+ if len(v) == 0 {
+ var zero T
+ return zero, false
+ }
+ return v[0], true
+}
+
+func ChunkBy[T any](items []T, chunkSize int) [][]T {
+ var chunks = make([][]T, 0, (len(items)/chunkSize)+1)
+ for chunkSize < len(items) {
+ items, chunks = items[chunkSize:], append(chunks, items[0:chunkSize:chunkSize])
+ }
+ return append(chunks, items)
+}
diff --git a/pkg/u/util_test.go b/pkg/u/util_test.go
new file mode 100644
index 0000000..a6d84c7
--- /dev/null
+++ b/pkg/u/util_test.go
@@ -0,0 +1,96 @@
+// go:build unit
+
+package u
+
+import (
+ "testing"
+
+ "github.com/google/go-cmp/cmp"
+)
+
+func TestFirst(t *testing.T) {
+ testCases := []struct {
+ name string
+ slice []int
+ first int
+ exist bool
+ }{
+ {
+ name: "multiple items slice",
+ slice: []int{1, 2, 3},
+ first: 1,
+ exist: true,
+ },
+ {
+ name: "single item slice",
+ slice: []int{1},
+ first: 1,
+ exist: true,
+ },
+ {
+ name: "empty slice",
+ slice: []int{},
+ first: 0,
+ exist: false,
+ },
+ }
+ for _, tc := range testCases {
+ t.Run(tc.name, func(t *testing.T) {
+
+ first, empty := First(tc.slice)
+
+ if first != tc.first {
+ t.Errorf("Error first, want %d got %d", tc.first, first)
+ }
+
+ if empty != tc.exist {
+ t.Errorf("Error empty, want %t got %t", tc.exist, empty)
+ }
+
+ })
+ }
+}
+
+func TestSubList(t *testing.T) {
+ testCases := []struct {
+ name string
+ slice []int
+ size int
+ want [][]int
+ }{
+ {
+ name: "sigle size sub list",
+ slice: []int{1, 2, 3},
+ size: 1,
+ want: [][]int{{1}, {2}, {3}},
+ },
+ {
+ name: "multiple size sub list",
+ slice: []int{1, 2, 3, 4},
+ size: 2,
+ want: [][]int{{1, 2}, {3, 4}},
+ },
+ {
+ name: "uneven multiple size sub list",
+ slice: []int{1, 2, 3, 4, 5},
+ size: 2,
+ want: [][]int{{1, 2}, {3, 4}, {5}},
+ },
+ {
+ name: "empty sub list",
+ slice: []int{},
+ size: 2,
+ want: [][]int{{}},
+ },
+ }
+ for _, tc := range testCases {
+ t.Run(tc.name, func(t *testing.T) {
+
+ subList := ChunkBy(tc.slice, tc.size)
+
+ if diff := cmp.Diff(tc.want, subList); diff != "" {
+ t.Errorf("Wrong result given - wanted + got\n %s", diff)
+ }
+ })
+ }
+}