Function TestParseDiffText_DeletedFile

internal/diff/parser_test.go:115–142

TestParseDiffText_DeletedFile guards the /dev/null detection: git emits "+++ /dev/null" WITHOUT the b/ prefix, which the old regexes required, so deletions were misclassified and triggered a doomed `git show ref:path`.

(t *testing.T)

// "+++ /dev/null" WITHOUT the b/ prefix, which the old regexes required, so
// deletions were misclassified and triggered a doomed `git show ref:path`.
func TestParseDiffText_DeletedFile(t *testing.T) {
	diffText := `diff --git a/gone.go b/gone.go
deleted file mode 100644
index 1234567..0000000
--- a/gone.go
+++ /dev/null
@@ -1,2 +0,0 @@
-line1
-line2
`
	diffs, err := ParseDiffText(context.Background(), diffText, t.TempDir(), "", nil)
	if err != nil {
		t.Fatalf("ParseDiffText: %v", err)
	}
	if len(diffs) != 1 {
		t.Fatalf("expected 1 diff, got %d", len(diffs))
	}
	d := diffs[0]
	if !d.IsDeleted {
		t.Errorf("IsDeleted = false, want true")
	}
	if d.NewPath != "/dev/null" {
		t.Errorf("NewPath = %q, want /dev/null", d.NewPath)
	}
	if d.OldPath != "gone.go" {
		t.Errorf("OldPath = %q, want gone.go", d.OldPath)
	}
}

// TestParseDiffText_NewFile covers "--- /dev/null" (no a/ prefix).
func TestParseDiffText_NewFile(t *testing.T) {