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