github.com/pingcap/tidb/parser@v0.0.0-20231013125129-93a834a6bf8d/opcode/opcode_test.go (about)

     1  // Copyright 2015 PingCAP, Inc.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // See the License for the specific language governing permissions and
    12  // limitations under the License.
    13  
    14  package opcode
    15  
    16  import (
    17  	"bytes"
    18  	"testing"
    19  )
    20  
    21  func TestT(t *testing.T) {
    22  	op := Plus
    23  	if op.String() != "plus" {
    24  		t.Fatalf("invalid op code")
    25  	}
    26  
    27  	var buf bytes.Buffer
    28  	for i := range ops {
    29  		op := Op(i)
    30  		op.Format(&buf)
    31  		if buf.String() != ops[op].literal {
    32  			t.Error("format op fail", op)
    33  		}
    34  		buf.Reset()
    35  	}
    36  
    37  	// Test invalid opcode
    38  	defer func() {
    39  		recover()
    40  	}()
    41  
    42  	op = 0
    43  	s := op.String()
    44  	if len(s) > 0 {
    45  		t.Fail()
    46  	}
    47  }