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filter_parser_test.go
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filter_parser_test.go
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package godata
import (
"context"
"strings"
"testing"
)
func TestFilterDateTime(t *testing.T) {
ctx := context.Background()
tokenizer := NewExpressionTokenizer()
tokens := map[string]TokenType{
"2011-08-29T21:58Z": ExpressionTokenDateTime,
"2011-08-29T21:58:33Z": ExpressionTokenDateTime,
"2011-08-29T21:58:33.123Z": ExpressionTokenDateTime,
"2011-08-29T21:58+11:23": ExpressionTokenDateTime,
"2011-08-29T21:58:33+11:23": ExpressionTokenDateTime,
"2011-08-29T21:58:33.123+11:23": ExpressionTokenDateTime,
"2011-08-29T21:58:33-11:23": ExpressionTokenDateTime,
"2011-08-29": ExpressionTokenDate,
"21:58:33": ExpressionTokenTime,
}
for tokenValue, tokenType := range tokens {
// Previously, the unit test had no space character after 'gt'
// E.g. 'CreateTime gt2011-08-29T21:58Z' was considered valid.
// However the ABNF notation for ODATA logical operators is:
// gtExpr = RWS "gt" RWS commonExpr
// RWS = 1*( SP / HTAB / "%20" / "%09" ) ; "required" whitespace
//
// See http://docs.oasis-open.org/odata/odata/v4.01/csprd03/abnf/odata-abnf-construction-rules.txt
input := "CreateTime gt " + tokenValue
expect := []*Token{
{Value: "CreateTime", Type: ExpressionTokenLiteral},
{Value: "gt", Type: ExpressionTokenLogical},
{Value: tokenValue, Type: tokenType},
}
output, err := tokenizer.Tokenize(ctx, input)
if err != nil {
t.Errorf("Failed to tokenize input %s. Error: %v", input, err)
}
result, err := CompareTokens(expect, output)
if !result {
var a []string
for _, t := range output {
a = append(a, t.Value)
}
t.Errorf("Unexpected tokens for input '%s'. Tokens: %s Error: %v", input, strings.Join(a, ", "), err)
}
}
}
func TestFilterAnyArrayOfObjects(t *testing.T) {
ctx := context.Background()
tokenizer := NewExpressionTokenizer()
input := "Tags/any(d:d/Key eq 'Site' and d/Value lt 10)"
expect := []*Token{
{Value: "Tags", Type: ExpressionTokenLiteral},
{Value: "/", Type: ExpressionTokenLambdaNav},
{Value: "any", Type: ExpressionTokenLambda},
{Value: "(", Type: ExpressionTokenOpenParen},
{Value: "d", Type: ExpressionTokenLiteral},
{Value: ",", Type: ExpressionTokenColon}, // ':' is replaced by ',' which is the function argument separator.
{Value: "d", Type: ExpressionTokenLiteral},
{Value: "/", Type: ExpressionTokenNav},
{Value: "Key", Type: ExpressionTokenLiteral},
{Value: "eq", Type: ExpressionTokenLogical},
{Value: "'Site'", Type: ExpressionTokenString},
{Value: "and", Type: ExpressionTokenLogical},
{Value: "d", Type: ExpressionTokenLiteral},
{Value: "/", Type: ExpressionTokenNav},
{Value: "Value", Type: ExpressionTokenLiteral},
{Value: "lt", Type: ExpressionTokenLogical},
{Value: "10", Type: ExpressionTokenInteger},
{Value: ")", Type: ExpressionTokenCloseParen},
}
output, err := tokenizer.Tokenize(ctx, input)
if err != nil {
t.Error(err)
}
result, err := CompareTokens(expect, output)
if !result {
t.Error(err)
}
}
func TestFilterAnyArrayOfPrimitiveTypes(t *testing.T) {
ctx := context.Background()
tokenizer := NewExpressionTokenizer()
input := "Tags/any(d:d eq 'Site')"
{
expect := []*Token{
{Value: "Tags", Type: ExpressionTokenLiteral},
{Value: "/", Type: ExpressionTokenLambdaNav},
{Value: "any", Type: ExpressionTokenLambda},
{Value: "(", Type: ExpressionTokenOpenParen},
{Value: "d", Type: ExpressionTokenLiteral},
{Value: ",", Type: ExpressionTokenColon},
{Value: "d", Type: ExpressionTokenLiteral},
{Value: "eq", Type: ExpressionTokenLogical},
{Value: "'Site'", Type: ExpressionTokenString},
{Value: ")", Type: ExpressionTokenCloseParen},
}
output, err := tokenizer.Tokenize(ctx, input)
if err != nil {
t.Error(err)
}
result, err := CompareTokens(expect, output)
if !result {
t.Error(err)
}
}
q, err := ParseFilterString(ctx, input)
if err != nil {
t.Errorf("Error parsing query %s. Error: %v", input, err)
return
}
var expect []expectedParseNode = []expectedParseNode{
{Value: "/", Depth: 0, Type: ExpressionTokenLambdaNav},
{Value: "Tags", Depth: 1, Type: ExpressionTokenLiteral},
{Value: "any", Depth: 1, Type: ExpressionTokenLambda},
{Value: "d", Depth: 2, Type: ExpressionTokenLiteral},
{Value: "eq", Depth: 2, Type: ExpressionTokenLogical},
{Value: "d", Depth: 3, Type: ExpressionTokenLiteral},
{Value: "'Site'", Depth: 3, Type: ExpressionTokenString},
}
pos := 0
err = CompareTree(q.Tree, expect, &pos, 0)
if err != nil {
t.Errorf("Tree representation does not match expected value. error: %v. Tree:\n%v", err, q.Tree)
}
}
// geographyPolygon = geographyPrefix SQUOTE fullPolygonLiteral SQUOTE
// geographyPrefix = "geography"
// fullPolygonLiteral = sridLiteral polygonLiteral
// sridLiteral = "SRID" EQ 1*5DIGIT SEMI
// polygonLiteral = "Polygon" polygonData
// polygonData = OPEN ringLiteral *( COMMA ringLiteral ) CLOSE
// positionLiteral = doubleValue SP doubleValue ; longitude, then latitude
/*
func TestFilterGeographyPolygon(t *testing.T) {
input := "geo.intersects(location, geography'SRID=0;Polygon(-122.031577 47.578581, -122.031577 47.678581, -122.131577 47.678581, -122.031577 47.578581)')"
q, err := ParseFilterString(input)
if err != nil {
t.Errorf("Error parsing query %s. Error: %s", input, err.Error())
return
}
var expect []expectedParseNode = []expectedParseNode{
{Value:"geo.intersects", Depth:0, Type: 0},
{Value:"location", Depth:1, Type: 0},
{Value:"geography'SRID=0;Polygon(-122.031577 47.578581, -122.031577 47.678581, -122.131577 47.678581, -122.031577 47.578581)'", Depth:1, Type: 0},
}
pos := 0
err = CompareTree(q.Tree, expect, &pos, 0)
if err != nil {
fmt.Printf("Got tree:\n%v\n", q.Tree.String())
t.Errorf("Tree representation does not match expected value. error: %s", err.Error())
}
}
*/
// TestFilterAnyGeography matches documents where any of the geo coordinates in the locations field is within the given polygon.
/*
func TestFilterAnyGeography(t *testing.T) {
input := "locations/any(loc: geo.intersects(loc, geography'Polygon((-122.031577 47.578581, -122.031577 47.678581, -122.131577 47.678581, -122.031577 47.578581))'))"
q, err := ParseFilterString(input)
if err != nil {
t.Errorf("Error parsing query %s. Error: %s", input, err.Error())
return
}
var expect []expectedParseNode = []expectedParseNode{
{Value:"/", Depth:0, Type: 0},
{Value:"Tags", Depth:1, Type: 0},
{Value:"any", Depth:1, Type: 0},
{Value:"d", Depth:2, Type: 0},
{Value:"or", Depth:2, Type: 0},
{Value:"or", Depth:3, Type: 0},
{Value:"or", Depth:4, Type: 0},
{Value:"eq", Depth:5, Type: 0},
{Value:"d", Depth:6, Type: 0},
{Value:"'Site'", Depth:6, Type: 0},
{Value:"eq", Depth:5, Type: 0},
{Value:"'Environment'", Depth:6, Type: 0},
{Value:"/", Depth:6, Type: 0},
{Value:"d", Depth:7, Type: 0},
{Value:"Key", Depth:7, Type: 0},
{Value:"eq", Depth:4, Type: 0},
{Value:"/", Depth:5, Type: 0},
{Value:"/", Depth:6, Type: 0},
{Value:"d", Depth:7, Type: 0},
{Value:"d", Depth:7, Type: 0},
{Value:"d", Depth:6, Type: 0},
{Value:"123456", Depth:5, Type: 0},
{Value:"eq", Depth:3, Type: 0},
{Value:"concat", Depth:4, Type: 0},
{Value:"/", Depth:5, Type: 0},
{Value:"d", Depth:6, Type: 0},
{Value:"FirstName", Depth:6, Type: 0},
{Value:"/", Depth:5, Type: 0},
{Value:"d", Depth:6, Type: 0},
{Value:"LastName", Depth:6, Type: 0},
{Value:"/", Depth:4, Type: 0},
{Value:"$it", Depth:5, Type: 0},
{Value:"FullName", Depth:5, Type: 0},
}
pos := 0
err = CompareTree(q.Tree, expect, &pos, 0)
if err != nil {
fmt.Printf("Got tree:\n%v\n", q.Tree.String())
t.Errorf("Tree representation does not match expected value. error: %s", err.Error())
}
}
*/
func TestFilterAnyMixedQuery(t *testing.T) {
/*
{
"Tags": [
"Site",
{ "Key": "Environment" },
{ "d" : { "d": 123456 }},
{ "FirstName" : "Bob", "LastName": "Smith"}
],
"FullName": "BobSmith"
}
*/
// The argument of a lambda operator is a case-sensitive lambda variable name followed by a colon (:) and a Boolean expression that
// uses the lambda variable name to refer to properties of members of the collection identified by the navigation path.
// If the name chosen for the lambda variable matches a property name of the current resource referenced by the resource path, the lambda variable takes precedence.
// Clients can prefix properties of the current resource referenced by the resource path with $it.
// Other path expressions in the Boolean expression neither prefixed with the lambda variable nor $it are evaluated in the scope of
// the collection instances at the origin of the navigation path prepended to the lambda operator.
input := "Tags/any(d:d eq 'Site' or 'Environment' eq d/Key or d/d/d eq 123456 or concat(d/FirstName, d/LastName) eq $it/FullName)"
ctx := context.Background()
q, err := ParseFilterString(ctx, input)
if err != nil {
t.Errorf("Error parsing query %s. Error: %v", input, err)
return
}
var expect []expectedParseNode = []expectedParseNode{
{Value: "/", Depth: 0, Type: ExpressionTokenLambdaNav},
{Value: "Tags", Depth: 1, Type: ExpressionTokenLiteral},
{Value: "any", Depth: 1, Type: ExpressionTokenLambda},
{Value: "d", Depth: 2, Type: ExpressionTokenLiteral},
{Value: "or", Depth: 2, Type: ExpressionTokenLogical},
{Value: "or", Depth: 3, Type: ExpressionTokenLogical},
{Value: "or", Depth: 4, Type: ExpressionTokenLogical},
{Value: "eq", Depth: 5, Type: ExpressionTokenLogical},
{Value: "d", Depth: 6, Type: ExpressionTokenLiteral},
{Value: "'Site'", Depth: 6, Type: ExpressionTokenString},
{Value: "eq", Depth: 5, Type: ExpressionTokenLogical},
{Value: "'Environment'", Depth: 6, Type: ExpressionTokenString},
{Value: "/", Depth: 6, Type: ExpressionTokenNav},
{Value: "d", Depth: 7, Type: ExpressionTokenLiteral},
{Value: "Key", Depth: 7, Type: ExpressionTokenLiteral},
{Value: "eq", Depth: 4, Type: ExpressionTokenLogical},
{Value: "/", Depth: 5, Type: ExpressionTokenNav},
{Value: "/", Depth: 6, Type: ExpressionTokenNav},
{Value: "d", Depth: 7, Type: ExpressionTokenLiteral},
{Value: "d", Depth: 7, Type: ExpressionTokenLiteral},
{Value: "d", Depth: 6, Type: ExpressionTokenLiteral},
{Value: "123456", Depth: 5, Type: ExpressionTokenInteger},
{Value: "eq", Depth: 3, Type: ExpressionTokenLogical},
{Value: "concat", Depth: 4, Type: ExpressionTokenFunc},
{Value: "/", Depth: 5, Type: ExpressionTokenNav},
{Value: "d", Depth: 6, Type: ExpressionTokenLiteral},
{Value: "FirstName", Depth: 6, Type: ExpressionTokenLiteral},
{Value: "/", Depth: 5, Type: ExpressionTokenNav},
{Value: "d", Depth: 6, Type: ExpressionTokenLiteral},
{Value: "LastName", Depth: 6, Type: ExpressionTokenLiteral},
{Value: "/", Depth: 4, Type: ExpressionTokenNav},
{Value: "$it", Depth: 5, Type: ExpressionTokenIt},
{Value: "FullName", Depth: 5, Type: ExpressionTokenLiteral},
}
pos := 0
err = CompareTree(q.Tree, expect, &pos, 0)
if err != nil {
t.Errorf("Tree representation does not match expected value. error: %v. Tree:\n%v", err, q.Tree)
}
}
func TestFilterGuid(t *testing.T) {
ctx := context.Background()
tokenizer := NewExpressionTokenizer()
input := "GuidValue eq 01234567-89ab-cdef-0123-456789abcdef"
expect := []*Token{
{Value: "GuidValue", Type: ExpressionTokenLiteral},
{Value: "eq", Type: ExpressionTokenLogical},
{Value: "01234567-89ab-cdef-0123-456789abcdef", Type: ExpressionTokenGuid},
}
output, err := tokenizer.Tokenize(ctx, input)
if err != nil {
t.Error(err)
}
result, err := CompareTokens(expect, output)
if !result {
t.Error(err)
}
}
func TestFilterDurationWithType(t *testing.T) {
ctx := context.Background()
tokenizer := NewExpressionTokenizer()
input := "Task eq duration'P12DT23H59M59.999999999999S'"
expect := []*Token{
{Value: "Task", Type: ExpressionTokenLiteral},
{Value: "eq", Type: ExpressionTokenLogical},
// Note the duration token is extracted.
{Value: "P12DT23H59M59.999999999999S", Type: ExpressionTokenDuration},
}
output, err := tokenizer.Tokenize(ctx, input)
if err != nil {
t.Error(err)
}
result, err := CompareTokens(expect, output)
if !result {
printTokens(output)
t.Error(err)
}
}
func TestFilterDurationWithoutType(t *testing.T) {
ctx := context.Background()
tokenizer := NewExpressionTokenizer()
input := "Task eq 'P12DT23H59M59.999999999999S'"
expect := []*Token{
{Value: "Task", Type: ExpressionTokenLiteral},
{Value: "eq", Type: ExpressionTokenLogical},
{Value: "P12DT23H59M59.999999999999S", Type: ExpressionTokenDuration},
}
output, err := tokenizer.Tokenize(ctx, input)
if err != nil {
t.Error(err)
}
result, err := CompareTokens(expect, output)
if !result {
printTokens(output)
t.Error(err)
}
}
func TestFilterAnyWithNoArgs(t *testing.T) {
ctx := context.Background()
tokenizer := NewExpressionTokenizer()
input := "Tags/any()"
{
expect := []*Token{
{Value: "Tags", Type: ExpressionTokenLiteral},
{Value: "/", Type: ExpressionTokenLambdaNav},
{Value: "any", Type: ExpressionTokenLambda},
{Value: "(", Type: ExpressionTokenOpenParen},
{Value: ")", Type: ExpressionTokenCloseParen},
}
output, err := tokenizer.Tokenize(ctx, input)
if err != nil {
t.Error(err)
}
result, err := CompareTokens(expect, output)
if !result {
t.Error(err)
}
}
q, err := ParseFilterString(ctx, input)
if err != nil {
t.Errorf("Error parsing query %s. Error: %v", input, err)
return
}
var expect []expectedParseNode = []expectedParseNode{
{Value: "/", Depth: 0, Type: ExpressionTokenLambdaNav},
{Value: "Tags", Depth: 1, Type: ExpressionTokenLiteral},
{Value: "any", Depth: 1, Type: ExpressionTokenLambda},
}
pos := 0
err = CompareTree(q.Tree, expect, &pos, 0)
if err != nil {
t.Errorf("Tree representation does not match expected value. error: %v. Tree:\n%v", err, q.Tree)
}
}
func TestFilterDivby(t *testing.T) {
ctx := context.Background()
{
tokenizer := NewExpressionTokenizer()
input := "Price div 2 gt 3.5"
expect := []*Token{
{Value: "Price", Type: ExpressionTokenLiteral},
{Value: "div", Type: ExpressionTokenOp},
{Value: "2", Type: ExpressionTokenInteger},
{Value: "gt", Type: ExpressionTokenLogical},
{Value: "3.5", Type: ExpressionTokenFloat},
}
output, err := tokenizer.Tokenize(ctx, input)
if err != nil {
t.Error(err)
}
result, err := CompareTokens(expect, output)
if !result {
t.Error(err)
}
}
{
tokenizer := NewExpressionTokenizer()
input := "Price divby 2 gt 3.5"
expect := []*Token{
{Value: "Price", Type: ExpressionTokenLiteral},
{Value: "divby", Type: ExpressionTokenOp},
{Value: "2", Type: ExpressionTokenInteger},
{Value: "gt", Type: ExpressionTokenLogical},
{Value: "3.5", Type: ExpressionTokenFloat},
}
output, err := tokenizer.Tokenize(ctx, input)
if err != nil {
t.Error(err)
}
result, err := CompareTokens(expect, output)
if !result {
t.Error(err)
}
}
}
func TestFilterNotBooleanProperty(t *testing.T) {
ctx := context.Background()
tokenizer := NewExpressionTokenizer()
input := "not Enabled"
{
expect := []*Token{
{Value: "not", Type: ExpressionTokenLogical},
{Value: "Enabled", Type: ExpressionTokenLiteral},
}
output, err := tokenizer.Tokenize(ctx, input)
if err != nil {
t.Error(err)
}
result, err := CompareTokens(expect, output)
if !result {
t.Error(err)
}
}
q, err := ParseFilterString(ctx, input)
if err != nil {
t.Errorf("Error parsing query %s. Error: %v", input, err)
return
}
var expect []expectedParseNode = []expectedParseNode{
{Value: "not", Depth: 0, Type: ExpressionTokenLogical},
{Value: "Enabled", Depth: 1, Type: ExpressionTokenLiteral},
}
pos := 0
err = CompareTree(q.Tree, expect, &pos, 0)
if err != nil {
t.Errorf("Tree representation does not match expected value. error: %v. Tree:\n%v", err, q.Tree)
}
}
func TestFilterEmptyStringToken(t *testing.T) {
ctx := context.Background()
tokenizer := NewExpressionTokenizer()
input := "City eq ''"
expect := []*Token{
{Value: "City", Type: ExpressionTokenLiteral},
{Value: "eq", Type: ExpressionTokenLogical},
{Value: "''", Type: ExpressionTokenString},
}
output, err := tokenizer.Tokenize(ctx, input)
if err != nil {
t.Error(err)
}
result, err := CompareTokens(expect, output)
if !result {
t.Error(err)
}
}
// Note: according to ODATA ABNF notation, there must be a space between not and open parenthesis.
// http://docs.oasis-open.org/odata/odata/v4.01/csprd03/abnf/odata-abnf-construction-rules.txt
func TestFilterNotWithNoSpace(t *testing.T) {
ctx := context.Background()
tokenizer := NewExpressionTokenizer()
input := "not(City eq 'Seattle')"
{
expect := []*Token{
{Value: "not", Type: ExpressionTokenLogical},
{Value: "(", Type: ExpressionTokenOpenParen},
{Value: "City", Type: ExpressionTokenLiteral},
{Value: "eq", Type: ExpressionTokenLogical},
{Value: "'Seattle'", Type: ExpressionTokenString},
{Value: ")", Type: ExpressionTokenCloseParen},
}
output, err := tokenizer.Tokenize(ctx, input)
if err != nil {
t.Error(err)
}
result, err := CompareTokens(expect, output)
if !result {
t.Error(err)
}
}
q, err := ParseFilterString(ctx, input)
if err != nil {
t.Errorf("Error parsing query %s. Error: %v", input, err)
return
}
var expect []expectedParseNode = []expectedParseNode{
{Value: "not", Depth: 0, Type: ExpressionTokenLogical},
{Value: "eq", Depth: 1, Type: ExpressionTokenLogical},
{Value: "City", Depth: 2, Type: ExpressionTokenLiteral},
{Value: "'Seattle'", Depth: 2, Type: ExpressionTokenString},
}
pos := 0
err = CompareTree(q.Tree, expect, &pos, 0)
if err != nil {
t.Errorf("Tree representation does not match expected value. error: %v. Tree:\n%v", err, q.Tree)
}
}
// TestFilterInOperator tests the "IN" operator with a comma-separated list of values.
func TestFilterInOperator(t *testing.T) {
ctx := context.Background()
tokenizer := NewExpressionTokenizer()
input := "City in ( 'Seattle', 'Atlanta', 'Paris' )"
expect := []*Token{
{Value: "City", Type: ExpressionTokenLiteral},
{Value: "in", Type: ExpressionTokenLogical},
{Value: "(", Type: ExpressionTokenOpenParen},
{Value: "'Seattle'", Type: ExpressionTokenString},
{Value: ",", Type: ExpressionTokenComma},
{Value: "'Atlanta'", Type: ExpressionTokenString},
{Value: ",", Type: ExpressionTokenComma},
{Value: "'Paris'", Type: ExpressionTokenString},
{Value: ")", Type: ExpressionTokenCloseParen},
}
tokens, err := tokenizer.Tokenize(ctx, input)
if err != nil {
t.Error(err)
}
result, err := CompareTokens(expect, tokens)
if !result {
t.Error(err)
}
var postfix *tokenQueue
postfix, err = GlobalFilterParser.InfixToPostfix(ctx, tokens)
if err != nil {
t.Error(err)
}
expect = []*Token{
{Value: "City", Type: ExpressionTokenLiteral},
{Value: "'Seattle'", Type: ExpressionTokenString},
{Value: "'Atlanta'", Type: ExpressionTokenString},
{Value: "'Paris'", Type: ExpressionTokenString},
{Value: "3", Type: TokenTypeArgCount},
{Value: TokenListExpr, Type: TokenTypeListExpr},
{Value: "in", Type: ExpressionTokenLogical},
}
if err := CompareQueue(expect, postfix); err != nil {
t.Error(err)
}
tree, err := GlobalFilterParser.PostfixToTree(ctx, postfix)
if err != nil {
t.Error(err)
}
var treeExpect []expectedParseNode = []expectedParseNode{
{Value: "in", Depth: 0, Type: ExpressionTokenLogical},
{Value: "City", Depth: 1, Type: ExpressionTokenLiteral},
{Value: TokenListExpr, Depth: 1, Type: TokenTypeListExpr},
{Value: "'Seattle'", Depth: 2, Type: ExpressionTokenString},
{Value: "'Atlanta'", Depth: 2, Type: ExpressionTokenString},
{Value: "'Paris'", Depth: 2, Type: ExpressionTokenString},
}
pos := 0
err = CompareTree(tree, treeExpect, &pos, 0)
if err != nil {
t.Errorf("Tree representation does not match expected value. error: %v. Tree:\n%v", err, tree)
}
}
// TestFilterInOperatorSingleValue tests the "IN" operator with a list containing a single value.
func TestFilterInOperatorSingleValue(t *testing.T) {
ctx := context.Background()
tokenizer := NewExpressionTokenizer()
input := "City in ( 'Seattle' )"
expect := []*Token{
{Value: "City", Type: ExpressionTokenLiteral},
{Value: "in", Type: ExpressionTokenLogical},
{Value: "(", Type: ExpressionTokenOpenParen},
{Value: "'Seattle'", Type: ExpressionTokenString},
{Value: ")", Type: ExpressionTokenCloseParen},
}
tokens, err := tokenizer.Tokenize(ctx, input)
if err != nil {
t.Error(err)
}
result, err := CompareTokens(expect, tokens)
if !result {
t.Error(err)
}
var postfix *tokenQueue
postfix, err = GlobalFilterParser.InfixToPostfix(ctx, tokens)
if err != nil {
t.Error(err)
}
expect = []*Token{
{Value: "City", Type: ExpressionTokenLiteral},
{Value: "'Seattle'", Type: ExpressionTokenString},
{Value: "1", Type: TokenTypeArgCount},
{Value: TokenListExpr, Type: TokenTypeListExpr},
{Value: "in", Type: ExpressionTokenLogical},
}
if err := CompareQueue(expect, postfix); err != nil {
t.Error(err)
}
tree, err := GlobalFilterParser.PostfixToTree(ctx, postfix)
if err != nil {
t.Error(err)
}
var treeExpect []expectedParseNode = []expectedParseNode{
{Value: "in", Depth: 0, Type: ExpressionTokenLogical},
{Value: "City", Depth: 1, Type: ExpressionTokenLiteral},
{Value: TokenListExpr, Depth: 1, Type: TokenTypeListExpr},
{Value: "'Seattle'", Depth: 2, Type: ExpressionTokenString},
}
pos := 0
err = CompareTree(tree, treeExpect, &pos, 0)
if err != nil {
t.Errorf("Tree representation does not match expected value. error: %v. Tree:\n%v", err, tree)
}
}
// TestFilterInOperatorEmptyList tests the "IN" operator with a list containing no value.
func TestFilterInOperatorEmptyList(t *testing.T) {
ctx := context.Background()
tokenizer := NewExpressionTokenizer()
input := "City in ( )"
expect := []*Token{
{Value: "City", Type: ExpressionTokenLiteral},
{Value: "in", Type: ExpressionTokenLogical},
{Value: "(", Type: ExpressionTokenOpenParen},
{Value: ")", Type: ExpressionTokenCloseParen},
}
tokens, err := tokenizer.Tokenize(ctx, input)
if err != nil {
t.Fatal(err)
}
result, err := CompareTokens(expect, tokens)
if !result {
t.Fatal(err)
}
var postfix *tokenQueue
postfix, err = GlobalFilterParser.InfixToPostfix(ctx, tokens)
if err != nil {
t.Fatal(err)
}
expect = []*Token{
{Value: "City", Type: ExpressionTokenLiteral},
{Value: "0", Type: TokenTypeArgCount},
{Value: TokenListExpr, Type: TokenTypeListExpr},
{Value: "in", Type: ExpressionTokenLogical},
}
if err := CompareQueue(expect, postfix); err != nil {
t.Fatal(err)
}
tree, err := GlobalFilterParser.PostfixToTree(ctx, postfix)
if err != nil {
t.Fatal(err)
}
var treeExpect []expectedParseNode = []expectedParseNode{
{Value: "in", Depth: 0, Type: ExpressionTokenLogical},
{Value: "City", Depth: 1, Type: ExpressionTokenLiteral},
{Value: TokenListExpr, Depth: 1, Type: TokenTypeListExpr},
}
pos := 0
err = CompareTree(tree, treeExpect, &pos, 0)
if err != nil {
t.Errorf("Tree representation does not match expected value. error: %v. Tree:\n%v", err, tree)
}
}
// TestFilterInOperatorBothSides tests the "IN" operator.
// Use a listExpr on both sides of the IN operator.
// listExpr = OPEN BWS commonExpr BWS *( COMMA BWS commonExpr BWS ) CLOSE
// Validate if a list is within another list.
func TestFilterInOperatorBothSides(t *testing.T) {
ctx := context.Background()
tokenizer := NewExpressionTokenizer()
input := "(1, 2) in ( ('ab', 'cd'), (1, 2), ('abc', 'def') )"
expect := []*Token{
{Value: "(", Type: ExpressionTokenOpenParen},
{Value: "1", Type: ExpressionTokenInteger},
{Value: ",", Type: ExpressionTokenComma},
{Value: "2", Type: ExpressionTokenInteger},
{Value: ")", Type: ExpressionTokenCloseParen},
{Value: "in", Type: ExpressionTokenLogical},
{Value: "(", Type: ExpressionTokenOpenParen},
{Value: "(", Type: ExpressionTokenOpenParen},
{Value: "'ab'", Type: ExpressionTokenString},
{Value: ",", Type: ExpressionTokenComma},
{Value: "'cd'", Type: ExpressionTokenString},
{Value: ")", Type: ExpressionTokenCloseParen},
{Value: ",", Type: ExpressionTokenComma},
{Value: "(", Type: ExpressionTokenOpenParen},
{Value: "1", Type: ExpressionTokenInteger},
{Value: ",", Type: ExpressionTokenComma},
{Value: "2", Type: ExpressionTokenInteger},
{Value: ")", Type: ExpressionTokenCloseParen},
{Value: ",", Type: ExpressionTokenComma},
{Value: "(", Type: ExpressionTokenOpenParen},
{Value: "'abc'", Type: ExpressionTokenString},
{Value: ",", Type: ExpressionTokenComma},
{Value: "'def'", Type: ExpressionTokenString},
{Value: ")", Type: ExpressionTokenCloseParen},
{Value: ")", Type: ExpressionTokenCloseParen},
}
tokens, err := tokenizer.Tokenize(ctx, input)
if err != nil {
t.Fatal(err)
}
result, err := CompareTokens(expect, tokens)
if !result {
t.Fatal(err)
}
var postfix *tokenQueue
postfix, err = GlobalFilterParser.InfixToPostfix(ctx, tokens)
if err != nil {
t.Fatalf("failed to convert from infix to postfix: %v", err)
}
expect = []*Token{
{Value: "1", Type: ExpressionTokenInteger},
{Value: "2", Type: ExpressionTokenInteger},
{Value: "2", Type: TokenTypeArgCount},
{Value: TokenListExpr, Type: TokenTypeListExpr},
{Value: "'ab'", Type: ExpressionTokenString},
{Value: "'cd'", Type: ExpressionTokenString}, // idx 5
{Value: "2", Type: TokenTypeArgCount},
{Value: TokenListExpr, Type: TokenTypeListExpr},
{Value: "1", Type: ExpressionTokenInteger},
{Value: "2", Type: ExpressionTokenInteger},
{Value: "2", Type: TokenTypeArgCount}, // idx 10
{Value: TokenListExpr, Type: TokenTypeListExpr},
{Value: "'abc'", Type: ExpressionTokenString},
{Value: "'def'", Type: ExpressionTokenString},
{Value: "2", Type: TokenTypeArgCount},
{Value: TokenListExpr, Type: TokenTypeListExpr}, // idx 15
{Value: "3", Type: TokenTypeArgCount},
{Value: TokenListExpr, Type: TokenTypeListExpr},
{Value: "in", Type: ExpressionTokenLogical},
}
if err := CompareQueue(expect, postfix); err != nil {
t.Fatalf("Unexpected postfix notation: %v. Error: %v", postfix, err)
}
tree, err := GlobalFilterParser.PostfixToTree(ctx, postfix)
if err != nil {
t.Fatalf("Failed to convert postfix to tree: %v", err)
}
var treeExpect []expectedParseNode = []expectedParseNode{
{Value: "in", Depth: 0, Type: ExpressionTokenLogical},
{Value: TokenListExpr, Depth: 1, Type: TokenTypeListExpr},
{Value: "1", Depth: 2, Type: ExpressionTokenInteger},
{Value: "2", Depth: 2, Type: ExpressionTokenInteger},
// ('ab', 'cd'), (1, 2), ('abc', 'def')
{Value: TokenListExpr, Depth: 1, Type: TokenTypeListExpr},
{Value: TokenListExpr, Depth: 2, Type: TokenTypeListExpr},
{Value: "'ab'", Depth: 3, Type: ExpressionTokenString},
{Value: "'cd'", Depth: 3, Type: ExpressionTokenString},
{Value: TokenListExpr, Depth: 2, Type: TokenTypeListExpr},
{Value: "1", Depth: 3, Type: ExpressionTokenInteger},
{Value: "2", Depth: 3, Type: ExpressionTokenInteger},
{Value: TokenListExpr, Depth: 2, Type: TokenTypeListExpr},
{Value: "'abc'", Depth: 3, Type: ExpressionTokenString},
{Value: "'def'", Depth: 3, Type: ExpressionTokenString},
}
pos := 0
err = CompareTree(tree, treeExpect, &pos, 0)
if err != nil {
t.Errorf("Tree representation does not match expected value. error: %v. Tree:\n%v", err, tree)
}
}
// TestFilterInOperatorWithFunc tests the "IN" operator with a comma-separated list
// of values, one of which is a function call which itself has a comma-separated list of values.
func TestFilterInOperatorWithFunc(t *testing.T) {
ctx := context.Background()
tokenizer := NewExpressionTokenizer()
// 'Atlanta' is enclosed in a unecessary parenExpr to validate the expression is properly unwrapped.
input := "City in ( 'Seattle', concat('San', 'Francisco'), ('Atlanta') )"
{
expect := []*Token{
{Value: "City", Type: ExpressionTokenLiteral},
{Value: "in", Type: ExpressionTokenLogical},
{Value: "(", Type: ExpressionTokenOpenParen},
{Value: "'Seattle'", Type: ExpressionTokenString},
{Value: ",", Type: ExpressionTokenComma},
{Value: "concat", Type: ExpressionTokenFunc},
{Value: "(", Type: ExpressionTokenOpenParen},
{Value: "'San'", Type: ExpressionTokenString},
{Value: ",", Type: ExpressionTokenComma},
{Value: "'Francisco'", Type: ExpressionTokenString},
{Value: ")", Type: ExpressionTokenCloseParen},
{Value: ",", Type: ExpressionTokenComma},
{Value: "(", Type: ExpressionTokenOpenParen},
{Value: "'Atlanta'", Type: ExpressionTokenString},
{Value: ")", Type: ExpressionTokenCloseParen},
{Value: ")", Type: ExpressionTokenCloseParen},
}
output, err := tokenizer.Tokenize(ctx, input)
if err != nil {
t.Error(err)
}
result, err := CompareTokens(expect, output)
if !result {
t.Error(err)
}
}
q, err := ParseFilterString(ctx, input)
if err != nil {
t.Fatalf("Error parsing filter: %v", err)
}
var expect []expectedParseNode = []expectedParseNode{
{Value: "in", Depth: 0, Type: ExpressionTokenLogical},
{Value: "City", Depth: 1, Type: ExpressionTokenLiteral},
{Value: TokenListExpr, Depth: 1, Type: TokenTypeListExpr},
{Value: "'Seattle'", Depth: 2, Type: ExpressionTokenString},
{Value: "concat", Depth: 2, Type: ExpressionTokenFunc},
{Value: "'San'", Depth: 3, Type: ExpressionTokenString},
{Value: "'Francisco'", Depth: 3, Type: ExpressionTokenString},
{Value: "'Atlanta'", Depth: 2, Type: ExpressionTokenString},
}
pos := 0
err = CompareTree(q.Tree, expect, &pos, 0)
if err != nil {
t.Errorf("Tree representation does not match expected value. error: %v. Tree:\n%v", err, q.Tree)
}
}
func TestFilterNotInListExpr(t *testing.T) {
ctx := context.Background()
tokenizer := NewExpressionTokenizer()
input := "not ( City in ( 'Seattle', 'Atlanta' ) )"
{
expect := []*Token{
{Value: "not", Type: ExpressionTokenLogical},
{Value: "(", Type: ExpressionTokenOpenParen},
{Value: "City", Type: ExpressionTokenLiteral},
{Value: "in", Type: ExpressionTokenLogical},
{Value: "(", Type: ExpressionTokenOpenParen},
{Value: "'Seattle'", Type: ExpressionTokenString},
{Value: ",", Type: ExpressionTokenComma},
{Value: "'Atlanta'", Type: ExpressionTokenString},
{Value: ")", Type: ExpressionTokenCloseParen},
{Value: ")", Type: ExpressionTokenCloseParen},
}
output, err := tokenizer.Tokenize(ctx, input)
if err != nil {
t.Error(err)
}
result, err := CompareTokens(expect, output)
if !result {
t.Error(err)
}
}
{
tokens, err := GlobalExpressionTokenizer.Tokenize(ctx, input)
if err != nil {
t.Error(err)
return
}
output, err := GlobalFilterParser.InfixToPostfix(ctx, tokens)
if err != nil {
t.Error(err)
return
}
tree, err := GlobalFilterParser.PostfixToTree(ctx, output)
if err != nil {
t.Error(err)
return
}
var expect []expectedParseNode = []expectedParseNode{
{Value: "not", Depth: 0, Type: ExpressionTokenLogical},
{Value: "in", Depth: 1, Type: ExpressionTokenLogical},
{Value: "City", Depth: 2, Type: ExpressionTokenLiteral},
{Value: TokenListExpr, Depth: 2, Type: TokenTypeListExpr},
{Value: "'Seattle'", Depth: 3, Type: ExpressionTokenString},
{Value: "'Atlanta'", Depth: 3, Type: ExpressionTokenString},
}
pos := 0
err = CompareTree(tree, expect, &pos, 0)
if err != nil {
t.Errorf("Tree representation does not match expected value. error: %v. Tree:\n%v", err, tree)
}
}
}
func TestFilterAll(t *testing.T) {
ctx := context.Background()
tokenizer := NewExpressionTokenizer()
input := "Tags/all(d:d/Key eq 'Site')"
expect := []*Token{
{Value: "Tags", Type: ExpressionTokenLiteral},
{Value: "/", Type: ExpressionTokenLambdaNav},
{Value: "all", Type: ExpressionTokenLambda},
{Value: "(", Type: ExpressionTokenOpenParen},
{Value: "d", Type: ExpressionTokenLiteral},
{Value: ",", Type: ExpressionTokenColon},
{Value: "d", Type: ExpressionTokenLiteral},
{Value: "/", Type: ExpressionTokenNav},
{Value: "Key", Type: ExpressionTokenLiteral},
{Value: "eq", Type: ExpressionTokenLogical},
{Value: "'Site'", Type: ExpressionTokenString},
{Value: ")", Type: ExpressionTokenCloseParen},
}
output, err := tokenizer.Tokenize(ctx, input)
if err != nil {
t.Error(err)
}
result, err := CompareTokens(expect, output)
if !result {
t.Error(err)
}
}
func TestExpressionTokenizer(t *testing.T) {
ctx := context.Background()
tokenizer := NewExpressionTokenizer()
input := "Name eq 'Milk' and Price lt 2.55"
expect := []*Token{
{Value: "Name", Type: ExpressionTokenLiteral},
{Value: "eq", Type: ExpressionTokenLogical},
{Value: "'Milk'", Type: ExpressionTokenString},
{Value: "and", Type: ExpressionTokenLogical},
{Value: "Price", Type: ExpressionTokenLiteral},
{Value: "lt", Type: ExpressionTokenLogical},
{Value: "2.55", Type: ExpressionTokenFloat},
}
output, err := tokenizer.Tokenize(ctx, input)
if err != nil {
t.Error(err)
}
result, err := CompareTokens(expect, output)
if !result {
t.Error(err)
}
}
func TestFilterFunction(t *testing.T) {
ctx := context.Background()
tokenizer := NewExpressionTokenizer()
// The syntax for ODATA functions follows the inline parameter syntax. The function name must be followed
// by an opening parenthesis, followed by a comma-separated list of parameters, followed by a closing parenthesis.
// For example:
// GET serviceRoot/Airports?$filter=contains(Location/Address, 'San Francisco')
input := "contains(LastName, 'Smith') and FirstName eq 'John' and City eq 'Houston'"
expect := []*Token{
{Value: "contains", Type: ExpressionTokenFunc},
{Value: "(", Type: ExpressionTokenOpenParen},
{Value: "LastName", Type: ExpressionTokenLiteral},
{Value: ",", Type: ExpressionTokenComma},
{Value: "'Smith'", Type: ExpressionTokenString},
{Value: ")", Type: ExpressionTokenCloseParen},
{Value: "and", Type: ExpressionTokenLogical},
{Value: "FirstName", Type: ExpressionTokenLiteral},
{Value: "eq", Type: ExpressionTokenLogical},
{Value: "'John'", Type: ExpressionTokenString},
{Value: "and", Type: ExpressionTokenLogical},
{Value: "City", Type: ExpressionTokenLiteral},
{Value: "eq", Type: ExpressionTokenLogical},