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|
package engine
import (
"context"
"testing"
"github.com/seaweedfs/seaweedfs/weed/pb/schema_pb"
)
func TestStringFunctions(t *testing.T) {
engine := NewTestSQLEngine()
t.Run("LENGTH function tests", func(t *testing.T) {
tests := []struct {
name string
value *schema_pb.Value
expected int64
expectErr bool
}{
{
name: "Length of string",
value: &schema_pb.Value{Kind: &schema_pb.Value_StringValue{StringValue: "Hello World"}},
expected: 11,
expectErr: false,
},
{
name: "Length of empty string",
value: &schema_pb.Value{Kind: &schema_pb.Value_StringValue{StringValue: ""}},
expected: 0,
expectErr: false,
},
{
name: "Length of number",
value: &schema_pb.Value{Kind: &schema_pb.Value_Int64Value{Int64Value: 12345}},
expected: 5,
expectErr: false,
},
{
name: "Length of null value",
value: nil,
expected: 0,
expectErr: true,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
result, err := engine.Length(tt.value)
if tt.expectErr {
if err == nil {
t.Errorf("Expected error but got none")
}
return
}
if err != nil {
t.Errorf("Unexpected error: %v", err)
return
}
intVal, ok := result.Kind.(*schema_pb.Value_Int64Value)
if !ok {
t.Errorf("LENGTH should return int64 value, got %T", result.Kind)
return
}
if intVal.Int64Value != tt.expected {
t.Errorf("Expected %d, got %d", tt.expected, intVal.Int64Value)
}
})
}
})
t.Run("UPPER/LOWER function tests", func(t *testing.T) {
// Test UPPER
result, err := engine.Upper(&schema_pb.Value{Kind: &schema_pb.Value_StringValue{StringValue: "Hello World"}})
if err != nil {
t.Errorf("UPPER failed: %v", err)
}
stringVal, _ := result.Kind.(*schema_pb.Value_StringValue)
if stringVal.StringValue != "HELLO WORLD" {
t.Errorf("Expected 'HELLO WORLD', got '%s'", stringVal.StringValue)
}
// Test LOWER
result, err = engine.Lower(&schema_pb.Value{Kind: &schema_pb.Value_StringValue{StringValue: "Hello World"}})
if err != nil {
t.Errorf("LOWER failed: %v", err)
}
stringVal, _ = result.Kind.(*schema_pb.Value_StringValue)
if stringVal.StringValue != "hello world" {
t.Errorf("Expected 'hello world', got '%s'", stringVal.StringValue)
}
})
t.Run("TRIM function tests", func(t *testing.T) {
tests := []struct {
name string
function func(*schema_pb.Value) (*schema_pb.Value, error)
input string
expected string
}{
{"TRIM whitespace", engine.Trim, " Hello World ", "Hello World"},
{"LTRIM whitespace", engine.LTrim, " Hello World ", "Hello World "},
{"RTRIM whitespace", engine.RTrim, " Hello World ", " Hello World"},
{"TRIM with tabs and newlines", engine.Trim, "\t\nHello\t\n", "Hello"},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
result, err := tt.function(&schema_pb.Value{Kind: &schema_pb.Value_StringValue{StringValue: tt.input}})
if err != nil {
t.Errorf("Function failed: %v", err)
return
}
stringVal, ok := result.Kind.(*schema_pb.Value_StringValue)
if !ok {
t.Errorf("Function should return string value, got %T", result.Kind)
return
}
if stringVal.StringValue != tt.expected {
t.Errorf("Expected '%s', got '%s'", tt.expected, stringVal.StringValue)
}
})
}
})
t.Run("SUBSTRING function tests", func(t *testing.T) {
testStr := &schema_pb.Value{Kind: &schema_pb.Value_StringValue{StringValue: "Hello World"}}
// Test substring with start and length
result, err := engine.Substring(testStr,
&schema_pb.Value{Kind: &schema_pb.Value_Int64Value{Int64Value: 7}},
&schema_pb.Value{Kind: &schema_pb.Value_Int64Value{Int64Value: 5}})
if err != nil {
t.Errorf("SUBSTRING failed: %v", err)
}
stringVal, _ := result.Kind.(*schema_pb.Value_StringValue)
if stringVal.StringValue != "World" {
t.Errorf("Expected 'World', got '%s'", stringVal.StringValue)
}
// Test substring with just start position
result, err = engine.Substring(testStr,
&schema_pb.Value{Kind: &schema_pb.Value_Int64Value{Int64Value: 7}})
if err != nil {
t.Errorf("SUBSTRING failed: %v", err)
}
stringVal, _ = result.Kind.(*schema_pb.Value_StringValue)
if stringVal.StringValue != "World" {
t.Errorf("Expected 'World', got '%s'", stringVal.StringValue)
}
})
t.Run("CONCAT function tests", func(t *testing.T) {
result, err := engine.Concat(
&schema_pb.Value{Kind: &schema_pb.Value_StringValue{StringValue: "Hello"}},
&schema_pb.Value{Kind: &schema_pb.Value_StringValue{StringValue: " "}},
&schema_pb.Value{Kind: &schema_pb.Value_StringValue{StringValue: "World"}},
)
if err != nil {
t.Errorf("CONCAT failed: %v", err)
}
stringVal, _ := result.Kind.(*schema_pb.Value_StringValue)
if stringVal.StringValue != "Hello World" {
t.Errorf("Expected 'Hello World', got '%s'", stringVal.StringValue)
}
// Test with mixed types
result, err = engine.Concat(
&schema_pb.Value{Kind: &schema_pb.Value_StringValue{StringValue: "Number: "}},
&schema_pb.Value{Kind: &schema_pb.Value_Int64Value{Int64Value: 42}},
)
if err != nil {
t.Errorf("CONCAT failed: %v", err)
}
stringVal, _ = result.Kind.(*schema_pb.Value_StringValue)
if stringVal.StringValue != "Number: 42" {
t.Errorf("Expected 'Number: 42', got '%s'", stringVal.StringValue)
}
})
t.Run("REPLACE function tests", func(t *testing.T) {
result, err := engine.Replace(
&schema_pb.Value{Kind: &schema_pb.Value_StringValue{StringValue: "Hello World World"}},
&schema_pb.Value{Kind: &schema_pb.Value_StringValue{StringValue: "World"}},
&schema_pb.Value{Kind: &schema_pb.Value_StringValue{StringValue: "Universe"}},
)
if err != nil {
t.Errorf("REPLACE failed: %v", err)
}
stringVal, _ := result.Kind.(*schema_pb.Value_StringValue)
if stringVal.StringValue != "Hello Universe Universe" {
t.Errorf("Expected 'Hello Universe Universe', got '%s'", stringVal.StringValue)
}
})
t.Run("POSITION function tests", func(t *testing.T) {
result, err := engine.Position(
&schema_pb.Value{Kind: &schema_pb.Value_StringValue{StringValue: "World"}},
&schema_pb.Value{Kind: &schema_pb.Value_StringValue{StringValue: "Hello World"}},
)
if err != nil {
t.Errorf("POSITION failed: %v", err)
}
intVal, _ := result.Kind.(*schema_pb.Value_Int64Value)
if intVal.Int64Value != 7 {
t.Errorf("Expected 7, got %d", intVal.Int64Value)
}
// Test not found
result, err = engine.Position(
&schema_pb.Value{Kind: &schema_pb.Value_StringValue{StringValue: "NotFound"}},
&schema_pb.Value{Kind: &schema_pb.Value_StringValue{StringValue: "Hello World"}},
)
if err != nil {
t.Errorf("POSITION failed: %v", err)
}
intVal, _ = result.Kind.(*schema_pb.Value_Int64Value)
if intVal.Int64Value != 0 {
t.Errorf("Expected 0 for not found, got %d", intVal.Int64Value)
}
})
t.Run("LEFT/RIGHT function tests", func(t *testing.T) {
testStr := &schema_pb.Value{Kind: &schema_pb.Value_StringValue{StringValue: "Hello World"}}
// Test LEFT
result, err := engine.Left(testStr, &schema_pb.Value{Kind: &schema_pb.Value_Int64Value{Int64Value: 5}})
if err != nil {
t.Errorf("LEFT failed: %v", err)
}
stringVal, _ := result.Kind.(*schema_pb.Value_StringValue)
if stringVal.StringValue != "Hello" {
t.Errorf("Expected 'Hello', got '%s'", stringVal.StringValue)
}
// Test RIGHT
result, err = engine.Right(testStr, &schema_pb.Value{Kind: &schema_pb.Value_Int64Value{Int64Value: 5}})
if err != nil {
t.Errorf("RIGHT failed: %v", err)
}
stringVal, _ = result.Kind.(*schema_pb.Value_StringValue)
if stringVal.StringValue != "World" {
t.Errorf("Expected 'World', got '%s'", stringVal.StringValue)
}
})
t.Run("REVERSE function tests", func(t *testing.T) {
result, err := engine.Reverse(&schema_pb.Value{Kind: &schema_pb.Value_StringValue{StringValue: "Hello"}})
if err != nil {
t.Errorf("REVERSE failed: %v", err)
}
stringVal, _ := result.Kind.(*schema_pb.Value_StringValue)
if stringVal.StringValue != "olleH" {
t.Errorf("Expected 'olleH', got '%s'", stringVal.StringValue)
}
// Test with Unicode
result, err = engine.Reverse(&schema_pb.Value{Kind: &schema_pb.Value_StringValue{StringValue: "🙂👍"}})
if err != nil {
t.Errorf("REVERSE failed: %v", err)
}
stringVal, _ = result.Kind.(*schema_pb.Value_StringValue)
if stringVal.StringValue != "👍🙂" {
t.Errorf("Expected '👍🙂', got '%s'", stringVal.StringValue)
}
})
}
// TestStringFunctionsSQL tests string functions through SQL execution
func TestStringFunctionsSQL(t *testing.T) {
engine := NewTestSQLEngine()
testCases := []struct {
name string
sql string
expectError bool
expectedVal string
}{
{
name: "UPPER function",
sql: "SELECT UPPER('hello world') AS upper_value FROM user_events LIMIT 1",
expectError: false,
expectedVal: "HELLO WORLD",
},
{
name: "LOWER function",
sql: "SELECT LOWER('HELLO WORLD') AS lower_value FROM user_events LIMIT 1",
expectError: false,
expectedVal: "hello world",
},
{
name: "LENGTH function",
sql: "SELECT LENGTH('hello') AS length_value FROM user_events LIMIT 1",
expectError: false,
expectedVal: "5",
},
{
name: "TRIM function",
sql: "SELECT TRIM(' hello world ') AS trimmed_value FROM user_events LIMIT 1",
expectError: false,
expectedVal: "hello world",
},
{
name: "LTRIM function",
sql: "SELECT LTRIM(' hello world ') AS ltrimmed_value FROM user_events LIMIT 1",
expectError: false,
expectedVal: "hello world ",
},
{
name: "RTRIM function",
sql: "SELECT RTRIM(' hello world ') AS rtrimmed_value FROM user_events LIMIT 1",
expectError: false,
expectedVal: " hello world",
},
{
name: "Multiple string functions",
sql: "SELECT UPPER('hello') AS up, LOWER('WORLD') AS low, LENGTH('test') AS len FROM user_events LIMIT 1",
expectError: false,
expectedVal: "", // We'll check this separately
},
{
name: "String function with wrong argument count",
sql: "SELECT UPPER('hello', 'extra') FROM user_events LIMIT 1",
expectError: true,
expectedVal: "",
},
{
name: "String function with no arguments",
sql: "SELECT UPPER() FROM user_events LIMIT 1",
expectError: true,
expectedVal: "",
},
}
for _, tc := range testCases {
t.Run(tc.name, func(t *testing.T) {
result, err := engine.ExecuteSQL(context.Background(), tc.sql)
if tc.expectError {
if err == nil && result.Error == nil {
t.Errorf("Expected error but got none")
}
return
}
if err != nil {
t.Errorf("Unexpected error: %v", err)
return
}
if result.Error != nil {
t.Errorf("Query result has error: %v", result.Error)
return
}
if len(result.Rows) == 0 {
t.Fatal("Expected at least one row")
}
if tc.name == "Multiple string functions" {
// Special case for multiple functions test
if len(result.Rows[0]) != 3 {
t.Fatalf("Expected 3 columns, got %d", len(result.Rows[0]))
}
// Check UPPER('hello') -> 'HELLO'
if result.Rows[0][0].ToString() != "HELLO" {
t.Errorf("Expected 'HELLO', got '%s'", result.Rows[0][0].ToString())
}
// Check LOWER('WORLD') -> 'world'
if result.Rows[0][1].ToString() != "world" {
t.Errorf("Expected 'world', got '%s'", result.Rows[0][1].ToString())
}
// Check LENGTH('test') -> '4'
if result.Rows[0][2].ToString() != "4" {
t.Errorf("Expected '4', got '%s'", result.Rows[0][2].ToString())
}
} else {
actualVal := result.Rows[0][0].ToString()
if actualVal != tc.expectedVal {
t.Errorf("Expected '%s', got '%s'", tc.expectedVal, actualVal)
}
}
})
}
}
|
