gocql_gocql/metadata_test.go

// Copyright (c) 2015 The gocql Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package gocql

import (
	"strconv"
	"testing"
)

func TestCompileMetadata(t *testing.T) {
	// V1 tests - these are all based on real examples from the integration test ccm cluster
	keyspace := &KeyspaceMetadata{
		Name: "V1Keyspace",
	}
	tables := []TableMetadata{
		TableMetadata{
			// This table, found in the system keyspace, has no key aliases or column aliases
			Keyspace:         "V1Keyspace",
			Name:             "Schema",
			KeyValidator:     "org.apache.cassandra.db.marshal.BytesType",
			Comparator:       "org.apache.cassandra.db.marshal.UTF8Type",
			DefaultValidator: "org.apache.cassandra.db.marshal.BytesType",
			KeyAliases:       []string{},
			ColumnAliases:    []string{},
			ValueAlias:       "",
		},
		TableMetadata{
			// This table, found in the system keyspace, has key aliases, column aliases, and a value alias.
			Keyspace:         "V1Keyspace",
			Name:             "hints",
			KeyValidator:     "org.apache.cassandra.db.marshal.UUIDType",
			Comparator:       "org.apache.cassandra.db.marshal.CompositeType(org.apache.cassandra.db.marshal.TimeUUIDType,org.apache.cassandra.db.marshal.Int32Type)",
			DefaultValidator: "org.apache.cassandra.db.marshal.BytesType",
			KeyAliases:       []string{"target_id"},
			ColumnAliases:    []string{"hint_id", "message_version"},
			ValueAlias:       "mutation",
		},
		TableMetadata{
			// This table, found in the system keyspace, has a comparator with collections, but no column aliases
			Keyspace:         "V1Keyspace",
			Name:             "peers",
			KeyValidator:     "org.apache.cassandra.db.marshal.InetAddressType",
			Comparator:       "org.apache.cassandra.db.marshal.CompositeType(org.apache.cassandra.db.marshal.UTF8Type,org.apache.cassandra.db.marshal.ColumnToCollectionType(746f6b656e73:org.apache.cassandra.db.marshal.SetType(org.apache.cassandra.db.marshal.UTF8Type)))",
			DefaultValidator: "org.apache.cassandra.db.marshal.BytesType",
			KeyAliases:       []string{"peer"},
			ColumnAliases:    []string{},
			ValueAlias:       "",
		},
		TableMetadata{
			// This table, found in the system keyspace, has a column alias, but not a composite comparator
			Keyspace:         "V1Keyspace",
			Name:             "IndexInfo",
			KeyValidator:     "org.apache.cassandra.db.marshal.UTF8Type",
			Comparator:       "org.apache.cassandra.db.marshal.UTF8Type",
			DefaultValidator: "org.apache.cassandra.db.marshal.BytesType",
			KeyAliases:       []string{"table_name"},
			ColumnAliases:    []string{"index_name"},
			ValueAlias:       "",
		},
		TableMetadata{
			// This table, found in the gocql_test keyspace following an integration test run, has a composite comparator with collections as well as a column alias
			Keyspace:         "V1Keyspace",
			Name:             "wiki_page",
			KeyValidator:     "org.apache.cassandra.db.marshal.UTF8Type",
			Comparator:       "org.apache.cassandra.db.marshal.CompositeType(org.apache.cassandra.db.marshal.TimeUUIDType,org.apache.cassandra.db.marshal.UTF8Type,org.apache.cassandra.db.marshal.ColumnToCollectionType(74616773:org.apache.cassandra.db.marshal.SetType(org.apache.cassandra.db.marshal.UTF8Type),6174746163686d656e7473:org.apache.cassandra.db.marshal.MapType(org.apache.cassandra.db.marshal.UTF8Type,org.apache.cassandra.db.marshal.BytesType)))",
			DefaultValidator: "org.apache.cassandra.db.marshal.BytesType",
			KeyAliases:       []string{"title"},
			ColumnAliases:    []string{"revid"},
			ValueAlias:       "",
		},
	}
	columns := []ColumnMetadata{
		// Here are the regular columns from the peers table for testing regular columns
		ColumnMetadata{Keyspace: "V1Keyspace", Table: "peers", Kind: REGULAR, Name: "data_center", ComponentIndex: 0, Validator: "org.apache.cassandra.db.marshal.UTF8Type"},
		ColumnMetadata{Keyspace: "V1Keyspace", Table: "peers", Kind: REGULAR, Name: "host_id", ComponentIndex: 0, Validator: "org.apache.cassandra.db.marshal.UUIDType"},
		ColumnMetadata{Keyspace: "V1Keyspace", Table: "peers", Kind: REGULAR, Name: "rack", ComponentIndex: 0, Validator: "org.apache.cassandra.db.marshal.UTF8Type"},
		ColumnMetadata{Keyspace: "V1Keyspace", Table: "peers", Kind: REGULAR, Name: "release_version", ComponentIndex: 0, Validator: "org.apache.cassandra.db.marshal.UTF8Type"},
		ColumnMetadata{Keyspace: "V1Keyspace", Table: "peers", Kind: REGULAR, Name: "rpc_address", ComponentIndex: 0, Validator: "org.apache.cassandra.db.marshal.InetAddressType"},
		ColumnMetadata{Keyspace: "V1Keyspace", Table: "peers", Kind: REGULAR, Name: "schema_version", ComponentIndex: 0, Validator: "org.apache.cassandra.db.marshal.UUIDType"},
		ColumnMetadata{Keyspace: "V1Keyspace", Table: "peers", Kind: REGULAR, Name: "tokens", ComponentIndex: 0, Validator: "org.apache.cassandra.db.marshal.SetType(org.apache.cassandra.db.marshal.UTF8Type)"},
	}
	compileMetadata(1, keyspace, tables, columns)
	assertKeyspaceMetadata(
		t,
		keyspace,
		&KeyspaceMetadata{
			Name: "V1Keyspace",
			Tables: map[string]*TableMetadata{
				"Schema": &TableMetadata{
					PartitionKey: []*ColumnMetadata{
						&ColumnMetadata{
							Name: "key",
							Type: TypeInfo{Type: TypeBlob},
						},
					},
					ClusteringColumns: []*ColumnMetadata{},
					Columns: map[string]*ColumnMetadata{
						"key": &ColumnMetadata{
							Name: "key",
							Type: TypeInfo{Type: TypeBlob},
							Kind: PARTITION_KEY,
						},
					},
				},
				"hints": &TableMetadata{
					PartitionKey: []*ColumnMetadata{
						&ColumnMetadata{
							Name: "target_id",
							Type: TypeInfo{Type: TypeUUID},
						},
					},
					ClusteringColumns: []*ColumnMetadata{
						&ColumnMetadata{
							Name:  "hint_id",
							Type:  TypeInfo{Type: TypeTimeUUID},
							Order: ASC,
						},
						&ColumnMetadata{
							Name:  "message_version",
							Type:  TypeInfo{Type: TypeInt},
							Order: ASC,
						},
					},
					Columns: map[string]*ColumnMetadata{
						"target_id": &ColumnMetadata{
							Name: "target_id",
							Type: TypeInfo{Type: TypeUUID},
							Kind: PARTITION_KEY,
						},
						"hint_id": &ColumnMetadata{
							Name:  "hint_id",
							Type:  TypeInfo{Type: TypeTimeUUID},
							Order: ASC,
							Kind:  CLUSTERING_KEY,
						},
						"message_version": &ColumnMetadata{
							Name:  "message_version",
							Type:  TypeInfo{Type: TypeInt},
							Order: ASC,
							Kind:  CLUSTERING_KEY,
						},
						"mutation": &ColumnMetadata{
							Name: "mutation",
							Type: TypeInfo{Type: TypeBlob},
							Kind: REGULAR,
						},
					},
				},
				"peers": &TableMetadata{
					PartitionKey: []*ColumnMetadata{
						&ColumnMetadata{
							Name: "peer",
							Type: TypeInfo{Type: TypeInet},
						},
					},
					ClusteringColumns: []*ColumnMetadata{},
					Columns: map[string]*ColumnMetadata{
						"peer": &ColumnMetadata{
							Name: "peer",
							Type: TypeInfo{Type: TypeInet},
							Kind: PARTITION_KEY,
						},
						"data_center":     &ColumnMetadata{Keyspace: "V1Keyspace", Table: "peers", Kind: REGULAR, Name: "data_center", ComponentIndex: 0, Validator: "org.apache.cassandra.db.marshal.UTF8Type", Type: TypeInfo{Type: TypeVarchar}},
						"host_id":         &ColumnMetadata{Keyspace: "V1Keyspace", Table: "peers", Kind: REGULAR, Name: "host_id", ComponentIndex: 0, Validator: "org.apache.cassandra.db.marshal.UUIDType", Type: TypeInfo{Type: TypeUUID}},
						"rack":            &ColumnMetadata{Keyspace: "V1Keyspace", Table: "peers", Kind: REGULAR, Name: "rack", ComponentIndex: 0, Validator: "org.apache.cassandra.db.marshal.UTF8Type", Type: TypeInfo{Type: TypeVarchar}},
						"release_version": &ColumnMetadata{Keyspace: "V1Keyspace", Table: "peers", Kind: REGULAR, Name: "release_version", ComponentIndex: 0, Validator: "org.apache.cassandra.db.marshal.UTF8Type", Type: TypeInfo{Type: TypeVarchar}},
						"rpc_address":     &ColumnMetadata{Keyspace: "V1Keyspace", Table: "peers", Kind: REGULAR, Name: "rpc_address", ComponentIndex: 0, Validator: "org.apache.cassandra.db.marshal.InetAddressType", Type: TypeInfo{Type: TypeInet}},
						"schema_version":  &ColumnMetadata{Keyspace: "V1Keyspace", Table: "peers", Kind: REGULAR, Name: "schema_version", ComponentIndex: 0, Validator: "org.apache.cassandra.db.marshal.UUIDType", Type: TypeInfo{Type: TypeUUID}},
						"tokens":          &ColumnMetadata{Keyspace: "V1Keyspace", Table: "peers", Kind: REGULAR, Name: "tokens", ComponentIndex: 0, Validator: "org.apache.cassandra.db.marshal.SetType(org.apache.cassandra.db.marshal.UTF8Type)", Type: TypeInfo{Type: TypeSet}},
					},
				},
				"IndexInfo": &TableMetadata{
					PartitionKey: []*ColumnMetadata{
						&ColumnMetadata{
							Name: "table_name",
							Type: TypeInfo{Type: TypeVarchar},
						},
					},
					ClusteringColumns: []*ColumnMetadata{
						&ColumnMetadata{
							Name:  "index_name",
							Type:  TypeInfo{Type: TypeVarchar},
							Order: ASC,
						},
					},
					Columns: map[string]*ColumnMetadata{
						"table_name": &ColumnMetadata{
							Name: "table_name",
							Type: TypeInfo{Type: TypeVarchar},
							Kind: PARTITION_KEY,
						},
						"index_name": &ColumnMetadata{
							Name: "index_name",
							Type: TypeInfo{Type: TypeVarchar},
							Kind: CLUSTERING_KEY,
						},
						"value": &ColumnMetadata{
							Name: "value",
							Type: TypeInfo{Type: TypeBlob},
							Kind: REGULAR,
						},
					},
				},
				"wiki_page": &TableMetadata{
					PartitionKey: []*ColumnMetadata{
						&ColumnMetadata{
							Name: "title",
							Type: TypeInfo{Type: TypeVarchar},
						},
					},
					ClusteringColumns: []*ColumnMetadata{
						&ColumnMetadata{
							Name:  "revid",
							Type:  TypeInfo{Type: TypeTimeUUID},
							Order: ASC,
						},
					},
					Columns: map[string]*ColumnMetadata{
						"title": &ColumnMetadata{
							Name: "title",
							Type: TypeInfo{Type: TypeVarchar},
							Kind: PARTITION_KEY,
						},
						"revid": &ColumnMetadata{
							Name: "revid",
							Type: TypeInfo{Type: TypeTimeUUID},
							Kind: CLUSTERING_KEY,
						},
					},
				},
			},
		},
	)

	// V2 test - V2+ protocol is simpler so here are some toy examples to verify that the mapping works
	keyspace = &KeyspaceMetadata{
		Name: "V2Keyspace",
	}
	tables = []TableMetadata{
		TableMetadata{
			Keyspace: "V2Keyspace",
			Name:     "Table1",
		},
		TableMetadata{
			Keyspace: "V2Keyspace",
			Name:     "Table2",
		},
	}
	columns = []ColumnMetadata{
		ColumnMetadata{
			Keyspace:  "V2Keyspace",
			Table:     "Table1",
			Name:      "Key1",
			Kind:      PARTITION_KEY,
			Validator: "org.apache.cassandra.db.marshal.UTF8Type",
		},
		ColumnMetadata{
			Keyspace:  "V2Keyspace",
			Table:     "Table2",
			Name:      "Column1",
			Kind:      PARTITION_KEY,
			Validator: "org.apache.cassandra.db.marshal.UTF8Type",
		},
		ColumnMetadata{
			Keyspace:  "V2Keyspace",
			Table:     "Table2",
			Name:      "Column2",
			Kind:      CLUSTERING_KEY,
			Validator: "org.apache.cassandra.db.marshal.UTF8Type",
		},
		ColumnMetadata{
			Keyspace:  "V2Keyspace",
			Table:     "Table2",
			Name:      "Column3",
			Kind:      REGULAR,
			Validator: "org.apache.cassandra.db.marshal.UTF8Type",
		},
	}
	compileMetadata(2, keyspace, tables, columns)
	assertKeyspaceMetadata(
		t,
		keyspace,
		&KeyspaceMetadata{
			Name: "V2Keyspace",
			Tables: map[string]*TableMetadata{
				"Table1": &TableMetadata{
					PartitionKey: []*ColumnMetadata{
						&ColumnMetadata{
							Name: "Key1",
							Type: TypeInfo{Type: TypeVarchar},
						},
					},
					ClusteringColumns: []*ColumnMetadata{},
					Columns: map[string]*ColumnMetadata{
						"Key1": &ColumnMetadata{
							Name: "Key1",
							Type: TypeInfo{Type: TypeVarchar},
							Kind: PARTITION_KEY,
						},
					},
				},
				"Table2": &TableMetadata{
					PartitionKey: []*ColumnMetadata{
						&ColumnMetadata{
							Name: "Column1",
							Type: TypeInfo{Type: TypeVarchar},
						},
					},
					ClusteringColumns: []*ColumnMetadata{
						&ColumnMetadata{
							Name: "Column2",
							Type: TypeInfo{Type: TypeVarchar},
						},
					},
					Columns: map[string]*ColumnMetadata{
						"Column1": &ColumnMetadata{
							Name: "Column1",
							Type: TypeInfo{Type: TypeVarchar},
							Kind: PARTITION_KEY,
						},
						"Column2": &ColumnMetadata{
							Name: "Column2",
							Type: TypeInfo{Type: TypeVarchar},
							Kind: CLUSTERING_KEY,
						},
						"Column3": &ColumnMetadata{
							Name: "Column3",
							Type: TypeInfo{Type: TypeVarchar},
							Kind: REGULAR,
						},
					},
				},
			},
		},
	)
}

func assertKeyspaceMetadata(t *testing.T, actual, expected *KeyspaceMetadata) {
	if len(expected.Tables) != len(actual.Tables) {
		t.Errorf("Expected len(%s.Tables) to be %v but was %v", expected.Name, len(expected.Tables), len(actual.Tables))
	}
	for keyT := range expected.Tables {
		et := expected.Tables[keyT]
		at, found := actual.Tables[keyT]

		if !found {
			t.Errorf("Expected %s.Tables[%s] but was not found", expected.Name, keyT)
		} else {
			if keyT != at.Name {
				t.Errorf("Expected %s.Tables[%s].Name to be %v but was %v", expected.Name, keyT, keyT, at.Name)
			}
			if len(et.PartitionKey) != len(at.PartitionKey) {
				t.Errorf("Expected len(%s.Tables[%s].PartitionKey) to be %v but was %v", expected.Name, keyT, len(et.PartitionKey), len(at.PartitionKey))
			} else {
				for i := range et.PartitionKey {
					if et.PartitionKey[i].Name != at.PartitionKey[i].Name {
						t.Errorf("Expected %s.Tables[%s].PartitionKey[%d].Name to be '%v' but was '%v'", expected.Name, keyT, i, et.PartitionKey[i].Name, at.PartitionKey[i].Name)
					}
					if expected.Name != at.PartitionKey[i].Keyspace {
						t.Errorf("Expected %s.Tables[%s].PartitionKey[%d].Keyspace to be '%v' but was '%v'", expected.Name, keyT, i, expected.Name, at.PartitionKey[i].Keyspace)
					}
					if keyT != at.PartitionKey[i].Table {
						t.Errorf("Expected %s.Tables[%s].PartitionKey[%d].Table to be '%v' but was '%v'", expected.Name, keyT, i, keyT, at.PartitionKey[i].Table)
					}
					if et.PartitionKey[i].Type.Type != at.PartitionKey[i].Type.Type {
						t.Errorf("Expected %s.Tables[%s].PartitionKey[%d].Type.Type to be %v but was %v", expected.Name, keyT, i, et.PartitionKey[i].Type.Type, at.PartitionKey[i].Type.Type)
					}
					if i != at.PartitionKey[i].ComponentIndex {
						t.Errorf("Expected %s.Tables[%s].PartitionKey[%d].ComponentIndex to be %v but was %v", expected.Name, keyT, i, i, at.PartitionKey[i].ComponentIndex)
					}
					if PARTITION_KEY != at.PartitionKey[i].Kind {
						t.Errorf("Expected %s.Tables[%s].PartitionKey[%d].Kind to be '%v' but was '%v'", expected.Name, keyT, i, PARTITION_KEY, at.PartitionKey[i].Kind)
					}
				}
			}
			if len(et.ClusteringColumns) != len(at.ClusteringColumns) {
				t.Errorf("Expected len(%s.Tables[%s].ClusteringColumns) to be %v but was %v", expected.Name, keyT, len(et.ClusteringColumns), len(at.ClusteringColumns))
			} else {
				for i := range et.ClusteringColumns {
					if et.ClusteringColumns[i].Name != at.ClusteringColumns[i].Name {
						t.Errorf("Expected %s.Tables[%s].ClusteringColumns[%d].Name to be '%v' but was '%v'", expected.Name, keyT, i, et.ClusteringColumns[i].Name, at.ClusteringColumns[i].Name)
					}
					if expected.Name != at.ClusteringColumns[i].Keyspace {
						t.Errorf("Expected %s.Tables[%s].ClusteringColumns[%d].Keyspace to be '%v' but was '%v'", expected.Name, keyT, i, expected.Name, at.ClusteringColumns[i].Keyspace)
					}
					if keyT != at.ClusteringColumns[i].Table {
						t.Errorf("Expected %s.Tables[%s].ClusteringColumns[%d].Table to be '%v' but was '%v'", expected.Name, keyT, i, keyT, at.ClusteringColumns[i].Table)
					}
					if et.ClusteringColumns[i].Type.Type != at.ClusteringColumns[i].Type.Type {
						t.Errorf("Expected %s.Tables[%s].ClusteringColumns[%d].Type.Type to be %v but was %v", expected.Name, keyT, i, et.ClusteringColumns[i].Type.Type, at.ClusteringColumns[i].Type.Type)
					}
					if i != at.ClusteringColumns[i].ComponentIndex {
						t.Errorf("Expected %s.Tables[%s].ClusteringColumns[%d].ComponentIndex to be %v but was %v", expected.Name, keyT, i, i, at.ClusteringColumns[i].ComponentIndex)
					}
					if et.ClusteringColumns[i].Order != at.ClusteringColumns[i].Order {
						t.Errorf("Expected %s.Tables[%s].ClusteringColumns[%d].Order to be %v but was %v", expected.Name, keyT, i, et.ClusteringColumns[i].Order, at.ClusteringColumns[i].Order)
					}
					if CLUSTERING_KEY != at.ClusteringColumns[i].Kind {
						t.Errorf("Expected %s.Tables[%s].ClusteringColumns[%d].Kind to be '%v' but was '%v'", expected.Name, keyT, i, CLUSTERING_KEY, at.ClusteringColumns[i].Kind)
					}
				}
			}
			if len(et.Columns) != len(at.Columns) {
				eKeys := make([]string, 0, len(et.Columns))
				for key := range et.Columns {
					eKeys = append(eKeys, key)
				}
				aKeys := make([]string, 0, len(at.Columns))
				for key := range at.Columns {
					aKeys = append(aKeys, key)
				}
				t.Errorf("Expected len(%s.Tables[%s].Columns) to be %v (keys:%v) but was %v (keys:%v)", expected.Name, keyT, len(et.Columns), eKeys, len(at.Columns), aKeys)
			} else {
				for keyC := range et.Columns {
					ec := et.Columns[keyC]
					ac, found := at.Columns[keyC]

					if !found {
						t.Errorf("Expected %s.Tables[%s].Columns[%s] but was not found", expected.Name, keyT, keyC)
					} else {
						if keyC != ac.Name {
							t.Errorf("Expected %s.Tables[%s].Columns[%s].Name to be '%v' but was '%v'", expected.Name, keyT, keyC, keyC, at.Name)
						}
						if expected.Name != ac.Keyspace {
							t.Errorf("Expected %s.Tables[%s].Columns[%s].Keyspace to be '%v' but was '%v'", expected.Name, keyT, keyC, expected.Name, ac.Keyspace)
						}
						if keyT != ac.Table {
							t.Errorf("Expected %s.Tables[%s].Columns[%s].Table to be '%v' but was '%v'", expected.Name, keyT, keyC, keyT, ac.Table)
						}
						if ec.Type.Type != ac.Type.Type {
							t.Errorf("Expected %s.Tables[%s].Columns[%s].Type.Type to be %v but was %v", expected.Name, keyT, keyC, ec.Type.Type, ac.Type.Type)
						}
						if ec.Order != ac.Order {
							t.Errorf("Expected %s.Tables[%s].Columns[%s].Order to be %v but was %v", expected.Name, keyT, keyC, ec.Order, ac.Order)
						}
						if ec.Kind != ac.Kind {
							t.Errorf("Expected %s.Tables[%s].Columns[%s].Kind to be '%v' but was '%v'", expected.Name, keyT, keyC, ec.Kind, ac.Kind)
						}
					}
				}
			}
		}
	}
}

func TestTypeParser(t *testing.T) {
	// native type
	assertParseNonCompositeType(
		t,
		"org.apache.cassandra.db.marshal.UTF8Type",
		assertTypeInfo{Type: TypeVarchar},
	)

	// reversed
	assertParseNonCompositeType(
		t,
		"org.apache.cassandra.db.marshal.ReversedType(org.apache.cassandra.db.marshal.UUIDType)",
		assertTypeInfo{Type: TypeUUID, Reversed: true},
	)

	// set
	assertParseNonCompositeType(
		t,
		"org.apache.cassandra.db.marshal.SetType(org.apache.cassandra.db.marshal.Int32Type)",
		assertTypeInfo{
			Type: TypeSet,
			Elem: &assertTypeInfo{Type: TypeInt},
		},
	)

	// map
	assertParseNonCompositeType(
		t,
		"org.apache.cassandra.db.marshal.MapType(org.apache.cassandra.db.marshal.UUIDType,org.apache.cassandra.db.marshal.BytesType)",
		assertTypeInfo{
			Type: TypeMap,
			Key:  &assertTypeInfo{Type: TypeUUID},
			Elem: &assertTypeInfo{Type: TypeBlob},
		},
	)

	// custom
	assertParseNonCompositeType(
		t,
		"org.apache.cassandra.db.marshal.DynamicCompositeType(u=>org.apache.cassandra.db.marshal.UUIDType,d=>org.apache.cassandra.db.marshal.DateType,t=>org.apache.cassandra.db.marshal.TimeUUIDType,b=>org.apache.cassandra.db.marshal.BytesType,s=>org.apache.cassandra.db.marshal.UTF8Type,B=>org.apache.cassandra.db.marshal.BooleanType,a=>org.apache.cassandra.db.marshal.AsciiType,l=>org.apache.cassandra.db.marshal.LongType,i=>org.apache.cassandra.db.marshal.IntegerType,x=>org.apache.cassandra.db.marshal.LexicalUUIDType)",
		assertTypeInfo{Type: TypeCustom, Custom: "org.apache.cassandra.db.marshal.DynamicCompositeType(u=>org.apache.cassandra.db.marshal.UUIDType,d=>org.apache.cassandra.db.marshal.DateType,t=>org.apache.cassandra.db.marshal.TimeUUIDType,b=>org.apache.cassandra.db.marshal.BytesType,s=>org.apache.cassandra.db.marshal.UTF8Type,B=>org.apache.cassandra.db.marshal.BooleanType,a=>org.apache.cassandra.db.marshal.AsciiType,l=>org.apache.cassandra.db.marshal.LongType,i=>org.apache.cassandra.db.marshal.IntegerType,x=>org.apache.cassandra.db.marshal.LexicalUUIDType)"},
	)

	// composite defs
	assertParseCompositeType(
		t,
		"org.apache.cassandra.db.marshal.CompositeType(org.apache.cassandra.db.marshal.UTF8Type)",
		[]assertTypeInfo{
			assertTypeInfo{Type: TypeVarchar},
		},
		nil,
	)
	assertParseCompositeType(
		t,
		"org.apache.cassandra.db.marshal.CompositeType(org.apache.cassandra.db.marshal.DateType,org.apache.cassandra.db.marshal.UTF8Type)",
		[]assertTypeInfo{
			assertTypeInfo{Type: TypeTimestamp},
			assertTypeInfo{Type: TypeVarchar},
		},
		nil,
	)
	assertParseCompositeType(
		t,
		"org.apache.cassandra.db.marshal.CompositeType(org.apache.cassandra.db.marshal.UTF8Type,org.apache.cassandra.db.marshal.ColumnToCollectionType(726f77735f6d6572676564:org.apache.cassandra.db.marshal.MapType(org.apache.cassandra.db.marshal.Int32Type,org.apache.cassandra.db.marshal.LongType)))",
		[]assertTypeInfo{
			assertTypeInfo{Type: TypeVarchar},
		},
		map[string]assertTypeInfo{
			"rows_merged": assertTypeInfo{
				Type: TypeMap,
				Key:  &assertTypeInfo{Type: TypeInt},
				Elem: &assertTypeInfo{Type: TypeBigInt},
			},
		},
	)
}

//---------------------------------------
// some code to assert the parser result
//---------------------------------------

type assertTypeInfo struct {
	Type     Type
	Reversed bool
	Elem     *assertTypeInfo
	Key      *assertTypeInfo
	Custom   string
}

func assertParseNonCompositeType(
	t *testing.T,
	def string,
	typeExpected assertTypeInfo,
) {

	result := parseType(def)
	if len(result.reversed) != 1 {
		t.Errorf("%s expected %d reversed values but there were %d", def, 1, len(result.reversed))
	}

	assertParseNonCompositeTypes(
		t,
		def,
		[]assertTypeInfo{typeExpected},
		result.types,
	)

	// expect no composite part of the result
	if result.isComposite {
		t.Errorf("%s: Expected not composite", def)
	}
	if result.collections != nil {
		t.Errorf("%s: Expected nil collections: %v", def, result.collections)
	}
}

func assertParseCompositeType(
	t *testing.T,
	def string,
	typesExpected []assertTypeInfo,
	collectionsExpected map[string]assertTypeInfo,
) {

	result := parseType(def)
	if len(result.reversed) != len(typesExpected) {
		t.Errorf("%s expected %d reversed values but there were %d", def, len(typesExpected), len(result.reversed))
	}

	assertParseNonCompositeTypes(
		t,
		def,
		typesExpected,
		result.types,
	)

	// expect composite part of the result
	if !result.isComposite {
		t.Errorf("%s: Expected composite", def)
	}
	if result.collections == nil {
		t.Errorf("%s: Expected non-nil collections: %v", def, result.collections)
	}

	for name, typeExpected := range collectionsExpected {
		// check for an actual type for this name
		typeActual, found := result.collections[name]
		if !found {
			t.Errorf("%s.tcollections: Expected param named %s but there wasn't", def, name)
		} else {
			// remove the actual from the collection so we can detect extras
			delete(result.collections, name)

			// check the type
			assertParseNonCompositeTypes(
				t,
				def+"collections["+name+"]",
				[]assertTypeInfo{typeExpected},
				[]TypeInfo{typeActual},
			)
		}
	}

	if len(result.collections) != 0 {
		t.Errorf("%s.collections: Expected no more types in collections, but there was %v", def, result.collections)
	}
}

func assertParseNonCompositeTypes(
	t *testing.T,
	context string,
	typesExpected []assertTypeInfo,
	typesActual []TypeInfo,
) {
	if len(typesActual) != len(typesExpected) {
		t.Errorf("%s: Expected %d types, but there were %d", context, len(typesExpected), len(typesActual))
	}

	for i := range typesExpected {
		typeExpected := typesExpected[i]
		typeActual := typesActual[i]

		// shadow copy the context for local modification
		context := context
		if len(typesExpected) > 1 {
			context = context + "[" + strconv.Itoa(i) + "]"
		}

		// check the type
		if typeActual.Type != typeExpected.Type {
			t.Errorf("%s: Expected to parse Type to %s but was %s", context, typeExpected.Type, typeActual.Type)
		}
		// check the custom
		if typeActual.Custom != typeExpected.Custom {
			t.Errorf("%s: Expected to parse Custom %s but was %s", context, typeExpected.Custom, typeActual.Custom)
		}
		// check the elem
		if typeActual.Elem == nil && typeExpected.Elem != nil {
			t.Errorf("%s: Expected to parse Elem, but was nil ", context)
		} else if typeExpected.Elem == nil && typeActual.Elem != nil {
			t.Errorf("%s: Expected to not parse Elem, but was %+v", context, typeActual.Elem)
		} else if typeActual.Elem != nil && typeExpected.Elem != nil {
			assertParseNonCompositeTypes(
				t,
				context+".Elem",
				[]assertTypeInfo{*typeExpected.Elem},
				[]TypeInfo{*typeActual.Elem},
			)
		}
		// check the key
		if typeActual.Key == nil && typeExpected.Key != nil {
			t.Errorf("%s: Expected to parse Key, but was nil ", context)
		} else if typeExpected.Key == nil && typeActual.Key != nil {
			t.Errorf("%s: Expected to not parse Key, but was %+v", context, typeActual.Key)
		} else if typeActual.Key != nil && typeExpected.Key != nil {
			assertParseNonCompositeTypes(
				t,
				context+".Key",
				[]assertTypeInfo{*typeExpected.Key},
				[]TypeInfo{*typeActual.Key},
			)
		}
	}
}