initial commit

column_test.go

@@ -0,0 +1,42 @@
+package simql
+
+import (
+	"testing"
+
+	"github.com/alecthomas/assert/v2"
+)
+
+func TestColumn(t *testing.T) {
+	type TestCase struct {
+		In      string
+		IsValid bool
+		Column  string
+		As      string
+	}
+
+	testCases := []TestCase{
+		// Column only
+		{In: "*", IsValid: true, Column: "*"},
+		{In: "email", IsValid: true, Column: "email"},
+		{In: "customer.*", IsValid: true, Column: "customer.*"},
+		{In: "customer.email", IsValid: true, Column: "customer.email"},
+		// Column and alias
+		{In: "customer.email as email", IsValid: true, Column: "customer.email", As: "email"},
+		// Invalid format (spaces)
+		{In: "customer.email as  email"},
+		{In: " customer.email as email"},
+		{In: "also as  broken "},
+		// Invalid format (disallowed characters) - TODO
+	}
+
+	for _, testCase := range testCases {
+		t.Run(testCase.In, func(t *testing.T) {
+			c := Column(testCase.In)
+			column, as, ok := c.Parse()
+
+			assert.Equal(t, testCase.IsValid, ok, "incorrect test case")
+			assert.Equal(t, testCase.Column, column, "parsed column incorrectly")
+			assert.Equal(t, testCase.As, as, "parsed as incorrectly")
+		})
+	}
+}