github.com/xyproto/u-root@v6.0.1-0.20200302025726-5528e0c77a3c+incompatible/cmds/core/seq/seq_test.go (about)

     1  // Copyright 2013 the u-root Authors. All rights reserved
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  // created by Manoel Vilela < manoel_vilela@engineer.com >
     6  
     7  package main
     8  
     9  import (
    10  	"bytes"
    11  	"io"
    12  	"reflect"
    13  	"testing"
    14  )
    15  
    16  type test struct {
    17  	args   []string
    18  	expect string
    19  }
    20  
    21  func resetFlags() {
    22  	flags.format = "%v"
    23  	flags.separator = "\n"
    24  	flags.widthEqual = false
    25  }
    26  
    27  func testseq(tests []test, t *testing.T) {
    28  	for _, tst := range tests {
    29  		b := bytes.Buffer{}
    30  		w := io.Writer(&b)
    31  		if err := seq(w, tst.args); err != nil {
    32  			t.Error(err)
    33  		}
    34  
    35  		got := b.Bytes()
    36  		want := []byte(tst.expect)
    37  
    38  		if !reflect.DeepEqual(got, want) {
    39  			t.Logf("Got: \n%v\n", string(got))
    40  			t.Logf("Expect: \n%v\n", tst.expect)
    41  			t.Error("Mismatching output")
    42  		}
    43  	}
    44  }
    45  
    46  // test default behavior without flags
    47  func TestSeqDefault(t *testing.T) {
    48  	var tests = []test{
    49  		{
    50  			[]string{"1", "3"},
    51  			"1\n2\n3\n",
    52  		},
    53  		{
    54  			[]string{"1", "0.5", "3"},
    55  			"1.0\n1.5\n2.0\n2.5\n3.0\n",
    56  		},
    57  	}
    58  
    59  	testseq(tests, t)
    60  }
    61  
    62  // test seq fixed width with leading zeros
    63  func TestSeqWidthEqual(t *testing.T) {
    64  	flags.widthEqual = true
    65  	defer resetFlags()
    66  	var tests = []test{
    67  		{
    68  			[]string{"8", "10"},
    69  			"08\n09\n10\n",
    70  		},
    71  		{
    72  			[]string{"8", "0.5", "10"},
    73  			"08.0\n08.5\n09.0\n09.5\n10.0\n",
    74  		},
    75  	}
    76  
    77  	testseq(tests, t)
    78  }
    79  
    80  func TestSeqCustomFormat(t *testing.T) {
    81  	flags.format = "%.2f"
    82  	flags.widthEqual = true
    83  	defer resetFlags()
    84  	var tests = []test{
    85  		{
    86  			[]string{"8", "10"},
    87  			"08.00\n09.00\n10.00\n",
    88  		},
    89  		{
    90  			[]string{"8", "0.5", "10"},
    91  			"08.00\n08.50\n09.00\n09.50\n10.00\n",
    92  		},
    93  	}
    94  
    95  	testseq(tests, t)
    96  }
    97  
    98  func TestSeqSeparator(t *testing.T) {
    99  	flags.separator = "->"
   100  	defer resetFlags()
   101  	var tests = []test{
   102  		{
   103  			[]string{"8", "10"},
   104  			"8->9->10\n",
   105  		},
   106  		{
   107  			[]string{"8", "0.5", "10"},
   108  			"8.0->8.5->9.0->9.5->10.0\n",
   109  		},
   110  	}
   111  
   112  	testseq(tests, t)
   113  
   114  }