updated all tests to use Fatal/Fatalf to fail tests ealier

posseg/viterbi_test.go

@@ -32,11 +32,11 @@ func TestViterbi(t *testing.T) {
 	ss := "李小福是创新办主任也是云计算方面的专家;"
 	route := viterbi([]rune(ss))
 	if len(route) != len(route1) {
-		t.Error(len(route))
+		t.Fatal(len(route))
 	}
 	for index, _ := range route {
 		if route[index] != route1[index] {
-			t.Error(route[index])
+			t.Fatal(route[index])
 		}
 	}
 }