package ldap

import (
	"github.com/tmfkams/asn1-ber"
	"testing"
)

type compile_test struct {
	filter_str  string
	filter_type int
}

var test_filters = []compile_test{
	compile_test{filter_str: "(&(sn=Miller)(givenName=Bob))", filter_type: FilterAnd},
	compile_test{filter_str: "(|(sn=Miller)(givenName=Bob))", filter_type: FilterOr},
	compile_test{filter_str: "(!(sn=Miller))", filter_type: FilterNot},
	compile_test{filter_str: "(sn=Miller)", filter_type: FilterEqualityMatch},
	compile_test{filter_str: "(sn=Mill*)", filter_type: FilterSubstrings},
	compile_test{filter_str: "(sn=*Mill)", filter_type: FilterSubstrings},
	compile_test{filter_str: "(sn=*Mill*)", filter_type: FilterSubstrings},
	compile_test{filter_str: "(sn>=Miller)", filter_type: FilterGreaterOrEqual},
	compile_test{filter_str: "(sn<=Miller)", filter_type: FilterLessOrEqual},
	compile_test{filter_str: "(sn=*)", filter_type: FilterPresent},
	compile_test{filter_str: "(sn~=Miller)", filter_type: FilterApproxMatch},
	// compile_test{ filter_str: "()", filter_type: FilterExtensibleMatch },
}

func TestFilter(t *testing.T) {
	// Test Compiler and Decompiler
	for _, i := range test_filters {
		filter, err := CompileFilter(i.filter_str)
		if err != nil {
			t.Errorf("Problem compiling %s - %s", err.String())
		} else if filter.Tag != uint8(i.filter_type) {
			t.Errorf("%q Expected %q got %q", i.filter_str, FilterMap[uint64(i.filter_type)], FilterMap[uint64(filter.Tag)])
		} else {
			o, err := DecompileFilter(filter)
			if err != nil {
				t.Errorf("Problem compiling %s - %s", i, err.String())
			} else if i.filter_str != o {
				t.Errorf("%q expected, got %q", i.filter_str, o)
			}
		}
	}
}

func BenchmarkFilterCompile(b *testing.B) {
	b.StopTimer()
	filters := make([]string, len(test_filters))

	// Test Compiler and Decompiler
	for idx, i := range test_filters {
		filters[idx] = i.filter_str
	}

	max_idx := len(filters)
	b.StartTimer()
	for i := 0; i < b.N; i++ {
		CompileFilter(filters[i%max_idx])
	}
}

func BenchmarkFilterDecompile(b *testing.B) {
	b.StopTimer()
	filters := make([]*ber.Packet, len(test_filters))

	// Test Compiler and Decompiler
	for idx, i := range test_filters {
		filters[idx], _ = CompileFilter(i.filter_str)
	}

	max_idx := len(filters)
	b.StartTimer()
	for i := 0; i < b.N; i++ {
		DecompileFilter(filters[i%max_idx])
	}
}