add gone branches status

pkg/commands/loaders/branches_test.go

@@ -0,0 +1,52 @@
+package loaders
+
+// "*|feat/detect-purge|origin/feat/detect-purge|[ahead 1]"
+import (
+	"testing"
+
+	"github.com/jesseduffield/lazygit/pkg/commands/models"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestObtainBanch(t *testing.T) {
+	type scenario struct {
+		testName       string
+		input          []string
+		expectedBranch *models.Branch
+	}
+
+	scenarios := []scenario{
+		{
+			testName:       "TrimHeads",
+			input:          []string{"", "heads/a_branch", "", ""},
+			expectedBranch: &models.Branch{Name: "a_branch", Pushables: "?", Pullables: "?", Head: false},
+		},
+		{
+			testName:       "NoUpstream",
+			input:          []string{"", "a_branch", "", ""},
+			expectedBranch: &models.Branch{Name: "a_branch", Pushables: "?", Pullables: "?", Head: false},
+		},
+		{
+			testName:       "IsHead",
+			input:          []string{"*", "a_branch", "", ""},
+			expectedBranch: &models.Branch{Name: "a_branch", Pushables: "?", Pullables: "?", Head: true},
+		},
+		{
+			testName:       "IsBehindAndAhead",
+			input:          []string{"", "a_branch", "a_remote/a_branch", "[behind 2, ahead 3]"},
+			expectedBranch: &models.Branch{Name: "a_branch", Pushables: "3", Pullables: "2", Head: false},
+		},
+		{
+			testName:       "RemoteBranchIsGone",
+			input:          []string{"", "a_branch", "a_remote/a_branch", "[gone]"},
+			expectedBranch: &models.Branch{Name: "a_branch", UpstreamGone: true, Pushables: "?", Pullables: "?", Head: false},
+		},
+	}
+
+	for _, s := range scenarios {
+		t.Run(s.testName, func(t *testing.T) {
+			branch := obtainBranch(s.input)
+			assert.EqualValues(t, s.expectedBranch, branch)
+		})
+	}
+}