test: write test for parsing Select Statements

q/select.go

@@ -6,6 +6,7 @@ import (
 	"github.com/DataDog/go-sqllexer"
 )
 
+// 126 rich mar drive
 type Select struct {
 	Table        string
 	Columns      []string

q/select_test.go

@@ -0,0 +1,78 @@
+package q
+
+import (
+	"fmt"
+	"testing"
+)
+
+type ParsingTest struct {
+	input    string
+	expected Select
+}
+
+func TestParseSelectStatement(t *testing.T) {
+	var testSqlStatements = []ParsingTest{
+		{
+			input: "SELECT * FROM users WHERE age >= 30",
+			expected: Select{
+				Table:      "users",
+				IsWildcard: true,
+				Conditionals: []Conditional{
+					{
+						Key:      "age",
+						Operator: ">=",
+						Value:    "30",
+					},
+				},
+			},
+		},
+	}
+
+	for _, sql := range testSqlStatements {
+		testName := fmt.Sprintf("%s", sql.input)
+		expected := sql.expected
+
+		t.Run(testName, func(t *testing.T) {
+			answer := ParseSelectStatement(sql.input)
+
+			if answer.Table != expected.Table {
+				t.Errorf("got %s for Select.Table, expected %s", answer.Table, expected.Table)
+			}
+			if answer.IsWildcard != expected.IsWildcard {
+				t.Errorf("got %#v for Select.IsWildcard, expected %#v", answer.IsWildcard, expected.IsWildcard)
+			}
+			if len(answer.Columns) != len(expected.Columns) {
+				t.Errorf("got %d number of columns for Select.Columns, expected %d", len(answer.Columns), len(expected.Columns))
+			} else {
+				for i, expectedColumn := range expected.Columns {
+					if expectedColumn != answer.Columns[i] {
+						t.Errorf("got %s for Select.Column[%d], expected %s", answer.Columns[i], i, expectedColumn)
+					}
+				}
+			}
+
+			if len(answer.Conditionals) != len(expected.Conditionals) {
+				t.Errorf("got %d number of conditionals for Select.Conditionals, expected %d", len(answer.Conditionals), len(expected.Conditionals))
+			} else {
+				for i, expectedCondition := range expected.Conditionals {
+					if expectedCondition.Key != answer.Conditionals[i].Key {
+						t.Errorf("got %s for Select.Conditionals[%d].Key, expected %s", answer.Conditionals[i].Key, i, expectedCondition.Key)
+					}
+					if expectedCondition.Operator != answer.Conditionals[i].Operator {
+						t.Errorf("got %s for Select.Conditionals[%d].Operator, expected %s", answer.Conditionals[i].Operator, i, expectedCondition.Operator)
+					}
+					if expectedCondition.Value != answer.Conditionals[i].Value {
+						t.Errorf("got %s for Select.Conditionals[%d].Value, expected %s", answer.Conditionals[i].Value, i, expectedCondition.Value)
+					}
+					if expectedCondition.DataType != answer.Conditionals[i].DataType {
+						t.Errorf("got %s for Select.Conditionals[%d].DataType, expected %s", answer.Conditionals[i].DataType, i, expectedCondition.DataType)
+					}
+					if expectedCondition.Extension != answer.Conditionals[i].Extension {
+						t.Errorf("got %s for Select.Conditionals[%d].Extension, expected %s", answer.Conditionals[i].Extension, i, expectedCondition.Extension)
+					}
+				}
+			}
+
+		})
+	}
+}