ExampleErrorConstraint

piotrkowalczuk · May 30, 2016 · bf50b4f · bf50b4f
1 parent f8511f9
commit bf50b4f
Showing 1 changed file with 19 additions and 0 deletions.
diff --git a/error_test.go b/error_test.go
@@ -2,11 +2,30 @@ package pqt
 
 import (
 	"errors"
+	"fmt"
 	"testing"
 
 	"github.com/lib/pq"
 )
 
+func ExampleErrorConstraint() {
+	expected := "pq: something goes wrong"
+	err := &pq.Error{
+		Table:      "user",
+		Constraint: expected,
+	}
+
+	switch ErrorConstraint(err) {
+	case expected:
+		fmt.Println("expected constraint")
+	default:
+		fmt.Println("unknown constraint")
+	}
+
+	// Output:
+	// expected constraint
+}
+
 func TestErrorConstraint(t *testing.T) {
 	expected := "something"
 	err := &pq.Error{