Add repo finder tests

pkg/git/finder_test.go

@@ -0,0 +1,90 @@
+package git
+
+import (
+	"git-get/pkg/test"
+	"testing"
+)
+
+func TestFinder(t *testing.T) {
+	tests := []struct {
+		name       string
+		reposMaker func(*testing.T) string
+		want       int
+	}{
+		{
+			name:       "no repos",
+			reposMaker: makeNoRepos,
+			want:       0,
+		},
+		{
+			name:       "single repos",
+			reposMaker: makeSingleRepo,
+			want:       1,
+		},
+		{
+			name:       "single nested repo",
+			reposMaker: makeNestedRepo,
+			want:       1,
+		},
+		{
+			name:       "multiple nested repo",
+			reposMaker: makeMultipleNestedRepos,
+			want:       2,
+		},
+	}
+
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			root := test.reposMaker(t)
+
+			finder := NewRepoFinder(root)
+			paths, _ := finder.Find()
+
+			if len(paths) != test.want {
+				t.Errorf("expected %d; got %d", test.want, len(paths))
+			}
+		})
+	}
+}
+
+func makeNoRepos(t *testing.T) string {
+	root := test.TempDir(t, "")
+
+	return root
+}
+
+func makeSingleRepo(t *testing.T) string {
+	root := test.TempDir(t, "")
+
+	test.RepoEmptyInDir(t, root)
+
+	return root
+}
+
+func makeNestedRepo(t *testing.T) string {
+	// a repo with single nested repo should still be counted as one beacause finder doesn't traverse inside nested repos
+	root := test.TempDir(t, "")
+
+	r := test.RepoEmptyInDir(t, root)
+	test.RepoEmptyInDir(t, r.Path())
+
+	return root
+}
+
+func makeMultipleNestedRepos(t *testing.T) string {
+	root := test.TempDir(t, "")
+
+	// create two repos inside root - should be counted as 2
+	repo1 := test.RepoEmptyInDir(t, root)
+	repo2 := test.RepoEmptyInDir(t, root)
+
+	// created repos nested inside two parent roots - shouldn't be counted
+	test.RepoEmptyInDir(t, repo1.Path())
+	test.RepoEmptyInDir(t, repo1.Path())
+	test.RepoEmptyInDir(t, repo2.Path())
+
+	// create a empty dir inside root - shouldn't be counted
+	test.TempDir(t, root)
+
+	return root
+}