feat(repo): add repo struct and tests

Author: nobe4

internal/github/repo.go

@@ -0,0 +1,34 @@
+package github
+
+import (
+	"errors"
+	"fmt"
+	"strings"
+)
+
+type Repo struct {
+	Owner string `json:"owner"`
+	Repo  string `json:"repo"`
+}
+
+var ErrInvalidRepository = errors.New("invalid repository")
+
+func ParseRepo(s string) (Repo, error) {
+	parts := strings.Split(s, "/")
+	if len(parts) != 2 || parts[0] == "" || parts[1] == "" {
+		return Repo{}, fmt.Errorf("%w: %s", ErrInvalidRepository, s)
+	}
+
+	return Repo{
+		Owner: parts[0],
+		Repo:  parts[1],
+	}, nil
+}
+
+func (r Repo) String() string {
+	return fmt.Sprintf("%s/%s", r.Owner, r.Repo)
+}
+
+func (r Repo) PullsEndpoint() string {
+	return fmt.Sprintf("repos/%s/%s/pulls?state=open", r.Owner, r.Repo)
+}

internal/github/repo_test.go

@@ -0,0 +1,56 @@
+package github
+
+import (
+	"errors"
+	"testing"
+)
+
+func TestParseRepo(t *testing.T) {
+	t.Parallel()
+
+	tests := []struct {
+		repo string
+		err  error
+		want Repo
+	}{
+		{
+			err: ErrInvalidRepository,
+		},
+		{
+			repo: "owner",
+			err:  ErrInvalidRepository,
+		},
+		{
+			repo: "/repo",
+			err:  ErrInvalidRepository,
+		},
+		{
+			repo: "/",
+			err:  ErrInvalidRepository,
+		},
+
+		{
+			repo: "owner/repo",
+			want: Repo{Owner: "owner", Repo: "repo"},
+		},
+	}
+
+	for _, test := range tests {
+		t.Run("", func(t *testing.T) {
+			t.Parallel()
+
+			got, err := ParseRepo(test.repo)
+			if !errors.Is(err, test.err) {
+				t.Errorf("want %q, got %q", test.err, err)
+			}
+
+			if got.Owner != test.want.Owner {
+				t.Errorf("want owner %s, got %s", test.want.Owner, got.Owner)
+			}
+
+			if got.Repo != test.want.Repo {
+				t.Errorf("want owner %s, got %s", test.want.Repo, got.Repo)
+			}
+		})
+	}
+}