1 files changed, 61 insertions, 0 deletions
diff --git a/src/pkg/exp/exception/exception_test.go b/src/pkg/exp/exception/exception_test.go
new file mode 100644
index 000000000..91f742ea0
--- /dev/null
+++ b/src/pkg/exp/exception/exception_test.go
@@ -0,0 +1,61 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package exception
+
+import "testing"
+
+func TestNoException(t *testing.T) {
+	e := Try(func(throw Handler) {});
+	if e != nil {
+		t.Fatalf("no exception expected, found: %v", e)
+	}
+}
+
+
+func TestNilException(t *testing.T) {
+	e := Try(func(throw Handler) { throw(nil) });
+	if e == nil {
+		t.Fatalf("exception expected", e)
+	}
+	if e.Value != nil {
+		t.Fatalf("nil exception expected, found: %v", e)
+	}
+}
+
+
+func TestTry(t *testing.T) {
+	s := 0;
+	for i := 1; i <= 10; i++ {
+		e := Try(func(throw Handler) {
+			if i%3 == 0 {
+				throw(i);
+				panic("throw returned");
+			}
+		});
+		if e != nil {
+			s += e.Value.(int)
+		}
+	}
+	result := 3 + 6 + 9;
+	if s != result {
+		t.Fatalf("expected: %d, found: %d", result, s)
+	}
+}
+
+
+func TestCatch(t *testing.T) {
+	s := 0;
+	for i := 1; i <= 10; i++ {
+		Try(func(throw Handler) {
+			if i%3 == 0 {
+				throw(i)
+			}
+		}).Catch(func(x interface{}) { s += x.(int) })
+	}
+	result := 3 + 6 + 9;
+	if s != result {
+		t.Fatalf("expected: %d, found: %d", result, s)
+	}
+}