github.com/ouraigua/jenkins-library@v0.0.0-20231028010029-fbeaf2f3aa9b/pkg/versioning/jsonfile_test.go (about)

     1  //go:build unit
     2  // +build unit
     3  
     4  package versioning
     5  
     6  import (
     7  	"fmt"
     8  	"os"
     9  	"testing"
    10  
    11  	"github.com/stretchr/testify/assert"
    12  )
    13  
    14  func TestJSONfileGetVersion(t *testing.T) {
    15  	t.Run("success case", func(t *testing.T) {
    16  		jsonfile := JSONfile{
    17  			path:     "my.json",
    18  			readFile: func(filename string) ([]byte, error) { return []byte(`{"version": "1.2.3"}`), nil },
    19  		}
    20  		version, err := jsonfile.GetVersion()
    21  		assert.NoError(t, err)
    22  		assert.Equal(t, "1.2.3", version)
    23  	})
    24  
    25  	t.Run("error case", func(t *testing.T) {
    26  		jsonfile := JSONfile{
    27  			path:         "my.json",
    28  			versionField: "theversion",
    29  			readFile:     func(filename string) ([]byte, error) { return []byte{}, fmt.Errorf("read error") },
    30  		}
    31  		_, err := jsonfile.GetVersion()
    32  		assert.EqualError(t, err, "failed to read file 'my.json': read error")
    33  	})
    34  }
    35  
    36  func TestJSONfileSetVersion(t *testing.T) {
    37  	t.Run("success case", func(t *testing.T) {
    38  		var content []byte
    39  		jsonfile := JSONfile{
    40  			path:         "my.json",
    41  			versionField: "theversion",
    42  			readFile:     func(filename string) ([]byte, error) { return []byte(`{"theversion": "1.2.3"}`), nil },
    43  			writeFile:    func(filename string, filecontent []byte, mode os.FileMode) error { content = filecontent; return nil },
    44  		}
    45  		err := jsonfile.SetVersion("1.2.4")
    46  		assert.NoError(t, err)
    47  		assert.Contains(t, string(content), `"theversion": "1.2.4"`)
    48  	})
    49  
    50  	t.Run("error case", func(t *testing.T) {
    51  		jsonfile := JSONfile{
    52  			path:         "my.json",
    53  			versionField: "theversion",
    54  			readFile:     func(filename string) ([]byte, error) { return []byte(`{"theversion": "1.2.3"}`), nil },
    55  			writeFile:    func(filename string, filecontent []byte, mode os.FileMode) error { return fmt.Errorf("write error") },
    56  		}
    57  		err := jsonfile.SetVersion("1.2.4")
    58  		assert.EqualError(t, err, "failed to write file 'my.json': write error")
    59  	})
    60  }