Add tests for repeated enum field accesses (#464)

* Add tests for repeated enum field accesses

* Additional tests for repeated enum assingability

Author: jnthntatum

tests/simple/testdata/enums.textproto

@@ -104,6 +104,49 @@ section {
       }
     }
   }
+  test {
+    name: "access_repeated_enum"
+    container: "cel.expr.conformance.proto2"
+    expr: "TestAllTypes{}.repeated_nested_enum"
+    value {
+      list_value {}
+    }
+  }
+  test {
+    name: "assign_repeated_enum"
+    container: "cel.expr.conformance.proto2"
+    expr:
+      "TestAllTypes{"
+      "  repeated_nested_enum: ["
+      "    TestAllTypes.NestedEnum.FOO,"
+      "    TestAllTypes.NestedEnum.BAR]}"
+    value {
+      object_value {
+        [type.googleapis.com/cel.expr.conformance.proto2.TestAllTypes] {
+          repeated_nested_enum: FOO
+          repeated_nested_enum: BAR
+        }
+      }
+    }
+  }
+  test {
+    name: "list_enum_as_list_int"
+    container: "cel.expr.conformance.proto2"
+    expr:
+      "0 in "
+      "TestAllTypes{"
+      "  repeated_nested_enum: ["
+      "    TestAllTypes.NestedEnum.FOO,"
+      "    TestAllTypes.NestedEnum.BAR]}"
+      ".repeated_nested_enum"
+    value: { bool_value: true }
+  }
+  test {
+    name: "enum_as_int"
+    container: "cel.expr.conformance.proto2"
+    expr: "TestAllTypes{standalone_enum: TestAllTypes.NestedEnum.FOO}.standalone_enum in [0]"
+    value: { bool_value: true }
+  }
 }
 section {
   name: "legacy_proto3"
@@ -302,6 +345,49 @@ section {
       }
     }
   }
+  test {
+    name: "access_repeated_enum"
+    container: "cel.expr.conformance.proto2"
+    expr: "TestAllTypes{}.repeated_nested_enum"
+    value {
+      list_value {}
+    }
+  }
+  test {
+    name: "assign_repeated_enum"
+    container: "cel.expr.conformance.proto2"
+    expr:
+      "TestAllTypes{"
+      "  repeated_nested_enum: ["
+      "    TestAllTypes.NestedEnum.FOO,"
+      "    TestAllTypes.NestedEnum.BAR]}"
+    value {
+      object_value {
+        [type.googleapis.com/cel.expr.conformance.proto2.TestAllTypes] {
+          repeated_nested_enum: FOO
+          repeated_nested_enum: BAR
+        }
+      }
+    }
+  }
+  test {
+    name: "list_enum_as_list_int"
+    container: "cel.expr.conformance.proto2"
+    expr:
+      "0 in "
+      "TestAllTypes{"
+      "  repeated_nested_enum: ["
+      "    TestAllTypes.NestedEnum.FOO,"
+      "    TestAllTypes.NestedEnum.BAR]}"
+      ".repeated_nested_enum"
+    value: { bool_value: true }
+  }
+  test {
+    name: "enum_as_int"
+    container: "cel.expr.conformance.proto2"
+    expr: "TestAllTypes{standalone_enum: TestAllTypes.NestedEnum.FOO}.standalone_enum in [0]"
+    value: { bool_value: true }
+  }
 }
 section {
   name: "strong_proto2"

tests/simple/testdata/proto2.textproto

@@ -588,6 +588,13 @@ section {
     value: { list_value: {} }
   }
 
+  test {
+    name: "repeated_enum"
+    container: "cel.expr.conformance.proto3"
+    expr: "TestAllTypes{}.repeated_nested_enum"
+    value: { list_value: {} }
+  }
+
   test {
     name: "repeated_nested"
     container: "cel.expr.conformance.proto2"

tests/simple/testdata/proto3.textproto

@@ -497,6 +497,13 @@ section {
     value: { list_value: {} }
   }
 
+  test {
+    name: "repeated_enum"
+    container: "cel.expr.conformance.proto3"
+    expr: "TestAllTypes{}.repeated_nested_enum"
+    value: { list_value: {} }
+  }
+
   test {
     name: "repeated_nested"
     container: "cel.expr.conformance.proto3"

tests/simple/testdata/type_deduction.textproto

@@ -193,6 +193,46 @@ section {
       }
     }
   }
+  test {
+    name: "enum_field"
+    container: "cel.expr.conformance.proto3"
+    expr: "TestAllTypes{}.standalone_enum"
+    typed_result {
+      result {
+        int64_value: 0
+      }
+      deduced_type { primitive: INT64 }
+    }
+  }
+  test {
+    name: "repeated_enum_field"
+    container: "cel.expr.conformance.proto3"
+    expr: "TestAllTypes{}.repeated_nested_enum"
+    typed_result {
+      result {
+        list_value {}
+      }
+      deduced_type {
+        list_type { elem_type { primitive: INT64 } }
+      }
+    }
+  }
+  test {
+    name: "enum_map_field"
+    container: "cel.expr.conformance.proto3"
+    expr: "TestAllTypes{}.map_int32_enum"
+    typed_result {
+      result {
+        map_value {}
+      }
+      deduced_type {
+        map_type {
+          key_type { primitive: INT64 }
+          value_type { primitive: INT64 }
+        }
+      }
+    }
+  }
 }
 
 section {