github.com/colincross/blueprint@v0.0.0-20150626231830-9c067caf2eb5/ninja_writer_test.go (about)

     1  // Copyright 2014 Google Inc. All rights reserved.
     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  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package blueprint
    16  
    17  import (
    18  	"bytes"
    19  	"testing"
    20  )
    21  
    22  func ck(err error) {
    23  	if err != nil {
    24  		panic(err)
    25  	}
    26  }
    27  
    28  var ninjaWriterTestCases = []struct {
    29  	input  func(w *ninjaWriter)
    30  	output string
    31  }{
    32  	{
    33  		input: func(w *ninjaWriter) {
    34  			ck(w.Comment("foo"))
    35  		},
    36  		output: "# foo\n",
    37  	},
    38  	{
    39  		input: func(w *ninjaWriter) {
    40  			ck(w.Pool("foo"))
    41  		},
    42  		output: "pool foo\n",
    43  	},
    44  	{
    45  		input: func(w *ninjaWriter) {
    46  			ck(w.Rule("foo"))
    47  		},
    48  		output: "rule foo\n",
    49  	},
    50  	{
    51  		input: func(w *ninjaWriter) {
    52  			ck(w.Build("foo", []string{"o1", "o2"}, []string{"e1", "e2"},
    53  				[]string{"i1", "i2"}, []string{"oo1", "oo2"}))
    54  		},
    55  		output: "build o1 o2: foo e1 e2 | i1 i2 || oo1 oo2\n",
    56  	},
    57  	{
    58  		input: func(w *ninjaWriter) {
    59  			ck(w.Default("foo"))
    60  		},
    61  		output: "default foo\n",
    62  	},
    63  	{
    64  		input: func(w *ninjaWriter) {
    65  			ck(w.Assign("foo", "bar"))
    66  		},
    67  		output: "foo = bar\n",
    68  	},
    69  	{
    70  		input: func(w *ninjaWriter) {
    71  			ck(w.ScopedAssign("foo", "bar"))
    72  		},
    73  		output: "    foo = bar\n",
    74  	},
    75  	{
    76  		input: func(w *ninjaWriter) {
    77  			ck(w.BlankLine())
    78  		},
    79  		output: "\n",
    80  	},
    81  	{
    82  		input: func(w *ninjaWriter) {
    83  			ck(w.Pool("p"))
    84  			ck(w.ScopedAssign("depth", "3"))
    85  			ck(w.BlankLine())
    86  			ck(w.Comment("here comes a rule"))
    87  			ck(w.Rule("r"))
    88  			ck(w.ScopedAssign("command", "echo out: $out in: $in _arg: $_arg"))
    89  			ck(w.ScopedAssign("pool", "p"))
    90  			ck(w.BlankLine())
    91  			ck(w.Build("r", []string{"foo.o"}, []string{"foo.in"}, nil, nil))
    92  			ck(w.ScopedAssign("_arg", "arg value"))
    93  		},
    94  		output: `pool p
    95      depth = 3
    96  
    97  # here comes a rule
    98  rule r
    99      command = echo out: $out in: $in _arg: $_arg
   100      pool = p
   101  
   102  build foo.o: r foo.in
   103      _arg = arg value
   104  `,
   105  	},
   106  }
   107  
   108  func TestNinjaWriter(t *testing.T) {
   109  	for i, testCase := range ninjaWriterTestCases {
   110  		buf := bytes.NewBuffer(nil)
   111  		w := newNinjaWriter(buf)
   112  		testCase.input(w)
   113  		if buf.String() != testCase.output {
   114  			t.Errorf("incorrect output for test case %d", i)
   115  			t.Errorf("  expected: %q", testCase.output)
   116  			t.Errorf("       got: %q", buf.String())
   117  		}
   118  	}
   119  }