lib/tests: Add tests for attrsOf and lazyAttrsOf

lib/tests/modules/attrsOf-conditional-check.nix

@@ -0,0 +1,7 @@
+{ lib, config, ... }: {
+  options.conditionalWorks = lib.mkOption {
+    default = ! config.value ? foo;
+  };
+
+  config.value.foo = lib.mkIf false "should not be defined";
+}

lib/tests/modules/attrsOf-lazy-check.nix

@@ -0,0 +1,7 @@
+{ lib, config, ... }: {
+  options.isLazy = lib.mkOption {
+    default = ! config.value ? foo;
+  };
+
+  config.value.bar = throw "is not lazy";
+}

lib/tests/modules/declare-attrsOf.nix

@@ -0,0 +1,6 @@
+{ lib, ... }: {
+  options.value = lib.mkOption {
+    type = lib.types.attrsOf lib.types.str;
+    default = {};
+  };
+}

lib/tests/modules/declare-lazyAttrsOf.nix

@@ -0,0 +1,6 @@
+{ lib, ... }: {
+  options.value = lib.mkOption {
+    type = lib.types.lazyAttrsOf (lib.types.str // { emptyValue.value = "empty"; });
+    default = {};
+  };
+}