github.com/rigado/snapd@v2.42.5-go-mod+incompatible/sanity/check_test.go (about)

     1  // -*- Mode: Go; indent-tabs-mode: t -*-
     2  
     3  /*
     4   * Copyright (C) 2018 Canonical Ltd
     5   *
     6   * This program is free software: you can redistribute it and/or modify
     7   * it under the terms of the GNU General Public License version 3 as
     8   * published by the Free Software Foundation.
     9   *
    10   * This program is distributed in the hope that it will be useful,
    11   * but WITHOUT ANY WARRANTY; without even the implied warranty of
    12   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    13   * GNU General Public License for more details.
    14   *
    15   * You should have received a copy of the GNU General Public License
    16   * along with this program.  If not, see <http://www.gnu.org/licenses/>.
    17   *
    18   */
    19  
    20  package sanity_test
    21  
    22  import (
    23  	"go/ast"
    24  	"go/parser"
    25  	"go/token"
    26  	"path/filepath"
    27  	"reflect"
    28  	"runtime"
    29  	"sort"
    30  	"strings"
    31  	"testing"
    32  
    33  	. "gopkg.in/check.v1"
    34  
    35  	"github.com/snapcore/snapd/sanity"
    36  )
    37  
    38  // Hook up check.v1 into the "go test" runner
    39  func Test(t *testing.T) { TestingT(t) }
    40  
    41  type sanitySuite struct{}
    42  
    43  var _ = Suite(&sanitySuite{})
    44  
    45  func (s *sanitySuite) TestRunHappy(c *C) {
    46  	var happyChecks []func() error
    47  	var happyCheckRan int
    48  
    49  	happyChecks = append(happyChecks, func() error {
    50  		happyCheckRan += 1
    51  		return nil
    52  	})
    53  
    54  	restore := sanity.MockChecks(happyChecks)
    55  	defer restore()
    56  
    57  	err := sanity.Check()
    58  	c.Check(err, IsNil)
    59  	c.Check(happyCheckRan, Equals, 1)
    60  }
    61  
    62  func (s *sanitySuite) TestRunNotHappy(c *C) {
    63  	var unhappyChecks []func() error
    64  	var unhappyCheckRan int
    65  
    66  	unhappyChecks = append(unhappyChecks, func() error {
    67  		unhappyCheckRan += 1
    68  		return nil
    69  	})
    70  
    71  	restore := sanity.MockChecks(unhappyChecks)
    72  	defer restore()
    73  
    74  	err := sanity.Check()
    75  	c.Check(err, IsNil)
    76  	c.Check(unhappyCheckRan, Equals, 1)
    77  }
    78  
    79  func (s *sanitySuite) TestUnexportedChecks(c *C) {
    80  	// collect what funcs we run in sanity.Check
    81  	var runCheckers []string
    82  	v := reflect.ValueOf(sanity.Checks())
    83  	for i := 0; i < v.Len(); i++ {
    84  		v := v.Index(i)
    85  		fname := runtime.FuncForPC(v.Pointer()).Name()
    86  		pos := strings.LastIndexByte(fname, '.')
    87  		checker := fname[pos+1:]
    88  		if !strings.HasPrefix(checker, "check") {
    89  			c.Fatalf(`%q in sanity.Checks does not have "check" prefix`, checker)
    90  		}
    91  		runCheckers = append(runCheckers, checker)
    92  	}
    93  
    94  	// collect all "check*" functions
    95  	goFiles, err := filepath.Glob("*.go")
    96  	c.Assert(err, IsNil)
    97  	fset := token.NewFileSet()
    98  
    99  	var checkers []string
   100  	for _, fn := range goFiles {
   101  		f, err := parser.ParseFile(fset, fn, nil, 0)
   102  		c.Assert(err, IsNil)
   103  		ast.Inspect(f, func(n ast.Node) bool {
   104  			switch x := n.(type) {
   105  			case *ast.File:
   106  				return true
   107  			case *ast.FuncDecl:
   108  				name := x.Name.Name
   109  				if strings.HasPrefix(name, "check") {
   110  					checkers = append(checkers, name)
   111  				}
   112  				return false
   113  			default:
   114  				return false
   115  			}
   116  		})
   117  	}
   118  
   119  	sort.Strings(checkers)
   120  	sort.Strings(runCheckers)
   121  
   122  	c.Check(checkers, DeepEquals, runCheckers)
   123  }