mirror of
https://gitee.com/rulego/streamsql.git
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rulego-team
372 lines
10 KiB
Go
372 lines
10 KiB
Go
package functions
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import (
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"testing"
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"github.com/stretchr/testify/assert"
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)
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func TestExprBridge(t *testing.T) {
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bridge := NewExprBridge()
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t.Run("StreamSQL Functions Available", func(t *testing.T) {
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// 测试StreamSQL函数是否可用
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data := map[string]interface{}{
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"temperature": 25.5,
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"humidity": 60,
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}
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// 测试数学函数
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result, err := bridge.EvaluateExpression("abs(-5)", data)
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assert.NoError(t, err)
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assert.Equal(t, float64(5), result)
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// 测试字符串函数
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result, err = bridge.EvaluateExpression("length(\"hello\")", data)
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assert.NoError(t, err)
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assert.Equal(t, int(5), result)
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})
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t.Run("Expr-Lang Functions Available", func(t *testing.T) {
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data := map[string]interface{}{
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"numbers": []int{1, 2, 3, 4, 5},
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"text": "Hello World",
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}
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// 测试expr-lang数组函数
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result, err := bridge.EvaluateExpression("len(numbers)", data)
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assert.NoError(t, err)
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assert.Equal(t, 5, result)
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// 测试expr-lang字符串函数
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result, err = bridge.EvaluateExpression("trim(\" hello \")", data)
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assert.NoError(t, err)
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assert.Equal(t, "hello", result)
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})
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t.Run("Mixed Functions", func(t *testing.T) {
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data := map[string]interface{}{
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"values": []float64{-3.5, 2.1, -1.8, 4.2},
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}
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// 使用StreamSQL的abs函数和expr-lang的filter函数
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// 注意：这个测试可能需要根据实际实现调整
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env := bridge.CreateEnhancedExprEnvironment(data)
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// 验证环境中包含所有预期的函数
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assert.Contains(t, env, "abs")
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assert.Contains(t, env, "length")
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assert.Contains(t, env, "values")
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})
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t.Run("Function Resolution", func(t *testing.T) {
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// 测试函数解析优先级
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_, exists, source := bridge.ResolveFunction("abs")
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assert.True(t, exists)
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assert.Equal(t, "streamsql", source) // StreamSQL优先
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_, exists, source = bridge.ResolveFunction("encode")
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assert.True(t, exists)
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assert.Equal(t, "streamsql", source) // StreamSQL独有
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_, exists, _ = bridge.ResolveFunction("nonexistent")
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assert.False(t, exists)
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})
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t.Run("Function Information", func(t *testing.T) {
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info := bridge.GetFunctionInfo()
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// 验证包含StreamSQL函数信息
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streamSQLFuncs, ok := info["streamsql"].(map[string]interface{})
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assert.True(t, ok)
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assert.Contains(t, streamSQLFuncs, "abs")
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assert.Contains(t, streamSQLFuncs, "encode")
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// 验证包含expr-lang函数信息
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exprLangFuncs, ok := info["expr-lang"].(map[string]interface{})
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assert.True(t, ok)
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assert.Contains(t, exprLangFuncs, "trim")
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assert.Contains(t, exprLangFuncs, "filter")
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})
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}
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func TestEvaluateWithBridge(t *testing.T) {
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data := map[string]interface{}{
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"x": 3.5,
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"y": -2.1,
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}
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// 测试简单表达式
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result, err := EvaluateWithBridge("abs(y)", data)
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assert.NoError(t, err)
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assert.Equal(t, 2.1, result)
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// 测试复合表达式
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result, err = EvaluateWithBridge("x + abs(y)", data)
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assert.NoError(t, err)
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assert.Equal(t, 5.6, result)
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}
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func TestGetAllAvailableFunctions(t *testing.T) {
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info := GetAllAvailableFunctions()
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// 验证返回的信息结构
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assert.Contains(t, info, "streamsql")
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assert.Contains(t, info, "expr-lang")
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// 验证函数数量合理
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streamSQLFuncs := info["streamsql"].(map[string]interface{})
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t.Logf("StreamSQL functions count: %d", len(streamSQLFuncs))
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// for name := range streamSQLFuncs {
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// t.Logf("StreamSQL function: %s", name)
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// }
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assert.GreaterOrEqual(t, len(streamSQLFuncs), 1) // 至少应该有一个函数
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exprLangFuncs := info["expr-lang"].(map[string]interface{})
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t.Logf("Expr-lang functions count: %d", len(exprLangFuncs))
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assert.GreaterOrEqual(t, len(exprLangFuncs), 1) // 至少应该有一个函数
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}
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func TestFunctionConflictResolution(t *testing.T) {
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bridge := NewExprBridge()
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data := map[string]interface{}{
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"value": -5.5,
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}
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// 测试冲突函数的解析（abs函数在两个系统中都存在）
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// 应该优先使用expr-lang的版本
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env := bridge.CreateEnhancedExprEnvironment(data)
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// 验证StreamSQL函数可以通过别名访问
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assert.Contains(t, env, "streamsql_abs")
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assert.Contains(t, env, "abs")
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// 测试两个版本都能正常工作
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result, err := bridge.EvaluateExpression("abs(value)", data)
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assert.NoError(t, err)
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assert.Equal(t, 5.5, result)
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}
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func TestExprBridgeAdvancedFunctions(t *testing.T) {
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bridge := NewExprBridge()
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t.Run("String Concatenation Detection", func(t *testing.T) {
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data := map[string]interface{}{
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"name": "John",
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"age": 25,
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}
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// 测试字符串连接表达式检测
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isConcat := bridge.isStringConcatenationExpression("name + ' is ' + age", data)
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assert.True(t, isConcat)
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isConcat = bridge.isStringConcatenationExpression("abs(-5)", data)
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assert.False(t, isConcat)
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})
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t.Run("Fallback to Custom Expression", func(t *testing.T) {
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data := map[string]interface{}{
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"text": "hello",
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}
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// 测试回退到自定义表达式处理
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result, err := bridge.fallbackToCustomExpr("text + ' world'", data)
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assert.NoError(t, err)
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assert.Equal(t, "hello world", result)
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})
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t.Run("String Concatenation Evaluation", func(t *testing.T) {
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data := map[string]interface{}{
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"first": "Hello",
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"second": "World",
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}
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// 测试字符串连接求值
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result, err := bridge.evaluateStringConcatenation("first + ' ' + second", data)
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assert.NoError(t, err)
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assert.Equal(t, "Hello World", result)
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})
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t.Run("Simple Numeric Expression", func(t *testing.T) {
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data := map[string]interface{}{
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"x": 10,
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"y": 5,
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}
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// 测试简单数值表达式
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result, err := bridge.evaluateSimpleNumericExpression("x + y", data)
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assert.NoError(t, err)
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assert.Equal(t, float64(15), result)
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})
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t.Run("Function Call Detection", func(t *testing.T) {
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// 测试函数调用检测
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assert.True(t, bridge.isFunctionCall("abs(-5)"))
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assert.True(t, bridge.isFunctionCall("length('hello')"))
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assert.False(t, bridge.isFunctionCall("x + y"))
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assert.False(t, bridge.isFunctionCall("simple_variable"))
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})
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t.Run("Like Expression Preprocessing", func(t *testing.T) {
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// 测试LIKE表达式预处理
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processed, err := bridge.PreprocessLikeExpression("name LIKE '%john%'")
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assert.NoError(t, err)
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assert.Contains(t, processed, "contains")
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})
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t.Run("IsNull Expression Preprocessing", func(t *testing.T) {
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// 测试IS NULL表达式预处理
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processed, err := bridge.PreprocessIsNullExpression("field IS NULL")
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assert.NoError(t, err)
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assert.Contains(t, processed, "== nil")
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})
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t.Run("Backtick Identifiers", func(t *testing.T) {
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// 测试反引号标识符检测
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assert.True(t, bridge.ContainsBacktickIdentifiers("`field_name` = 1"))
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assert.False(t, bridge.ContainsBacktickIdentifiers("field_name = 1"))
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// 测试反引号标识符预处理
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processed, err := bridge.PreprocessBacktickIdentifiers("`field_name` = 1")
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assert.NoError(t, err)
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assert.Contains(t, processed, "field_name")
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})
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t.Run("Like Pattern Matching", func(t *testing.T) {
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// 测试LIKE模式匹配
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assert.True(t, bridge.matchesLikePattern("hello", "h%"))
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assert.True(t, bridge.matchesLikePattern("world", "%d"))
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assert.False(t, bridge.matchesLikePattern("hello", "x%"))
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// 测试递归LIKE匹配
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assert.True(t, bridge.likeMatch("hello", "h%o", 0, 0))
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assert.False(t, bridge.likeMatch("hello", "x%", 0, 0))
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})
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t.Run("Type Conversion", func(t *testing.T) {
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// 测试类型转换
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result, err := bridge.toFloat64(10)
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assert.NoError(t, err)
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assert.Equal(t, float64(10), result)
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result, err = bridge.toFloat64("10.5")
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assert.NoError(t, err)
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assert.Equal(t, float64(10.5), result)
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_, err = bridge.toFloat64("invalid")
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assert.Error(t, err)
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})
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t.Run("Expr Lang Function Detection", func(t *testing.T) {
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// 测试expr-lang函数检测
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assert.True(t, bridge.IsExprLangFunction("trim"))
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assert.True(t, bridge.IsExprLangFunction("len"))
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assert.True(t, bridge.IsExprLangFunction("abs"))
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assert.False(t, bridge.IsExprLangFunction("nonexistent"))
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})
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t.Run("Like to Function Conversion", func(t *testing.T) {
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// 测试LIKE转换为函数调用
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result := bridge.convertLikeToFunction("name", "%john%")
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assert.Contains(t, result, "contains")
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assert.Contains(t, result, "name")
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assert.Contains(t, result, "john")
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})
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}
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// TestExprBridgeComplexExpressions 测试复杂表达式处理
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func TestExprBridgeComplexExpressions(t *testing.T) {
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bridge := NewExprBridge()
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tests := []struct {
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name string
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expression string
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data map[string]interface{}
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expected interface{}
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wantErr bool
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}{
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{
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name: "math_and_string",
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expression: "length('test')",
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data: map[string]interface{}{},
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expected: 4,
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wantErr: false,
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},
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{
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name: "nested_function_calls",
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expression: "abs(sqrt(16) - 5)",
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data: map[string]interface{}{},
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expected: float64(1),
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wantErr: false,
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},
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{
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name: "array_operations",
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expression: "array_length([1, 2, 3, 4])",
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data: map[string]interface{}{},
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expected: 4,
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wantErr: false,
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},
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{
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name: "string_with_variables",
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expression: "upper(name)",
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data: map[string]interface{}{"name": "john"},
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expected: "JOHN",
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wantErr: false,
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},
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{
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name: "conditional_expression",
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expression: "age > 18 ? 'adult' : 'minor'",
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data: map[string]interface{}{"age": 25},
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expected: "adult",
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wantErr: false,
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},
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{
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name: "complex_math",
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expression: "power(2, 3) + mod(10, 3)",
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data: map[string]interface{}{},
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expected: float64(9),
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wantErr: false,
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},
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{
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name: "array_contains_check",
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expression: "array_contains([1, 2, 3], 2)",
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data: map[string]interface{}{},
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expected: true,
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wantErr: false,
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},
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{
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name: "string_concatenation",
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expression: "concat(first_name, ' ', last_name)",
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data: map[string]interface{}{"first_name": "John", "last_name": "Doe"},
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expected: "John Doe",
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wantErr: false,
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},
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{
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name: "invalid_function",
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expression: "nonexistent_function(1)",
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data: map[string]interface{}{},
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expected: nil,
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wantErr: true,
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},
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{
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name: "invalid_syntax",
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expression: "length(",
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data: map[string]interface{}{},
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expected: nil,
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wantErr: 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 := bridge.EvaluateExpression(tt.expression, tt.data)
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if tt.wantErr {
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assert.Error(t, err)
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return
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}
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assert.NoError(t, err)
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assert.Equal(t, tt.expected, result)
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})
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}
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}
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