turbo-getgroup: the primary users should not be returned

src/Corpus.zig

@@ -270,7 +270,7 @@ pub fn testCorpus(allocator: Allocator) !Corpus {
         allocator,
         100000,
         "service-account",
-        &[_][]const u8{ "svc-bar", "vidmantas" },
+        &[_][]const u8{ "svc-bar", "vidmantas", "root" },
     );
     defer group0.deinit(allocator);
     defer group1.deinit(allocator);

src/turbo-getent.zig

@@ -249,3 +249,33 @@ test "turbo-getent passwd_all" {
         i += 1;
     }
 }
+
+test "turbo-getent group" {
+    var tf = try File.TestDB.init(testing.allocator);
+    defer tf.deinit();
+    var stdout = ArrayList(u8).init(testing.allocator);
+    defer stdout.deinit();
+    var stderr = ArrayList(u8).init(testing.allocator);
+    defer stderr.deinit();
+
+    {
+        const args = &[_][*:0]const u8{
+            "--db",
+            tf.path,
+            "group",
+            "root",
+            "doesnotexist",
+            "svc-bar",
+            "0",
+            "1",
+        };
+        const got = execute(stdout.writer(), stderr.writer(), args);
+        try testing.expectEqual(got, 2);
+        const want =
+            \\root:x:0:
+            \\svc-bar:x:128:root,vidmantas
+            \\
+        ;
+        try testing.expectEqualStrings(want, stdout.items);
+    }
+}