github.com/meulengracht/snapd@v0.0.0-20210719210640-8bde69bcc84e/kernel/kernel_test.go (about)

     1  // -*- Mode: Go; indent-tabs-mode: t -*-
     2  
     3  /*
     4   * Copyright (C) 2020 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 kernel_test
    21  
    22  import (
    23  	"io/ioutil"
    24  	"os"
    25  	"path/filepath"
    26  	"testing"
    27  
    28  	. "gopkg.in/check.v1"
    29  
    30  	"github.com/snapcore/snapd/kernel"
    31  )
    32  
    33  func makeMockKernel(c *C, kernelYaml string, filesWithContent map[string]string) string {
    34  	kernelRootDir := c.MkDir()
    35  	err := os.MkdirAll(filepath.Join(kernelRootDir, "meta"), 0755)
    36  	c.Assert(err, IsNil)
    37  	err = ioutil.WriteFile(filepath.Join(kernelRootDir, "meta/kernel.yaml"), []byte(kernelYaml), 0644)
    38  	c.Assert(err, IsNil)
    39  
    40  	for fname, content := range filesWithContent {
    41  		p := filepath.Join(kernelRootDir, fname)
    42  		err = os.MkdirAll(filepath.Dir(p), 0755)
    43  		c.Assert(err, IsNil)
    44  		err = ioutil.WriteFile(p, []byte(content), 0644)
    45  		c.Assert(err, IsNil)
    46  	}
    47  
    48  	return kernelRootDir
    49  }
    50  
    51  type kernelYamlTestSuite struct{}
    52  
    53  var _ = Suite(&kernelYamlTestSuite{})
    54  
    55  func TestCommand(t *testing.T) { TestingT(t) }
    56  
    57  var mockKernelYaml = []byte(`
    58  assets:
    59    dtbs:
    60      update: true
    61      content:
    62        - dtbs/bcm2711-rpi-4-b.dtb
    63        - dtbs/bcm2836-rpi-2-b.dtb
    64  `)
    65  
    66  var mockInvalidKernelYaml = []byte(`
    67  assets:
    68    non-#alphanumeric:
    69  `)
    70  
    71  func (s *kernelYamlTestSuite) TestInfoFromKernelYamlSad(c *C) {
    72  	ki, err := kernel.InfoFromKernelYaml([]byte("foo"))
    73  	c.Check(err, ErrorMatches, "(?m)cannot parse kernel metadata: .*")
    74  	c.Check(ki, IsNil)
    75  }
    76  
    77  func (s *kernelYamlTestSuite) TestInfoFromKernelYamlBadName(c *C) {
    78  	ki, err := kernel.InfoFromKernelYaml(mockInvalidKernelYaml)
    79  	c.Check(err, ErrorMatches, `invalid asset name "non-#alphanumeric", please use only alphanumeric characters and dashes`)
    80  	c.Check(ki, IsNil)
    81  }
    82  
    83  func (s *kernelYamlTestSuite) TestInfoFromKernelYamlHappy(c *C) {
    84  	ki, err := kernel.InfoFromKernelYaml(mockKernelYaml)
    85  	c.Check(err, IsNil)
    86  	c.Check(ki, DeepEquals, &kernel.Info{
    87  		Assets: map[string]*kernel.Asset{
    88  			"dtbs": {
    89  				Update: true,
    90  				Content: []string{
    91  					"dtbs/bcm2711-rpi-4-b.dtb",
    92  					"dtbs/bcm2836-rpi-2-b.dtb",
    93  				},
    94  			},
    95  		},
    96  	})
    97  }
    98  
    99  func (s *kernelYamlTestSuite) TestReadKernelYamlOptional(c *C) {
   100  	ki, err := kernel.ReadInfo("this-path-does-not-exist")
   101  	c.Check(err, IsNil)
   102  	c.Check(ki, DeepEquals, &kernel.Info{})
   103  }
   104  
   105  func (s *kernelYamlTestSuite) TestReadKernelYamlSad(c *C) {
   106  	mockKernelSnapRoot := c.MkDir()
   107  	kernelYamlPath := filepath.Join(mockKernelSnapRoot, "meta/kernel.yaml")
   108  	err := os.MkdirAll(filepath.Dir(kernelYamlPath), 0755)
   109  	c.Assert(err, IsNil)
   110  	err = ioutil.WriteFile(kernelYamlPath, []byte(`invalid-kernel-yaml`), 0644)
   111  	c.Assert(err, IsNil)
   112  
   113  	ki, err := kernel.ReadInfo(mockKernelSnapRoot)
   114  	c.Check(err, ErrorMatches, `(?m)cannot parse kernel metadata: yaml: unmarshal errors:.*`)
   115  	c.Check(ki, IsNil)
   116  }
   117  
   118  func (s *kernelYamlTestSuite) TestReadKernelYamlHappy(c *C) {
   119  	mockKernelSnapRoot := c.MkDir()
   120  	kernelYamlPath := filepath.Join(mockKernelSnapRoot, "meta/kernel.yaml")
   121  	err := os.MkdirAll(filepath.Dir(kernelYamlPath), 0755)
   122  	c.Assert(err, IsNil)
   123  	err = ioutil.WriteFile(kernelYamlPath, mockKernelYaml, 0644)
   124  	c.Assert(err, IsNil)
   125  
   126  	ki, err := kernel.ReadInfo(mockKernelSnapRoot)
   127  	c.Assert(err, IsNil)
   128  	c.Check(ki, DeepEquals, &kernel.Info{
   129  		Assets: map[string]*kernel.Asset{
   130  			"dtbs": {
   131  				Update: true,
   132  				Content: []string{
   133  					"dtbs/bcm2711-rpi-4-b.dtb",
   134  					"dtbs/bcm2836-rpi-2-b.dtb",
   135  				},
   136  			},
   137  		},
   138  	})
   139  }