github.com/google/cloudprober@v0.11.3/common/file/file_test.go (about)

     1  // Copyright 2020 The Cloudprober Authors.
     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 file
    16  
    17  import (
    18  	"io/ioutil"
    19  	"testing"
    20  )
    21  
    22  func createTempFile(t *testing.T, b []byte) string {
    23  	tmpfile, err := ioutil.TempFile("", "")
    24  	if err != nil {
    25  		t.Fatal(err)
    26  		return ""
    27  	}
    28  
    29  	defer tmpfile.Close()
    30  	if _, err := tmpfile.Write(b); err != nil {
    31  		t.Fatal(err)
    32  	}
    33  
    34  	return tmpfile.Name()
    35  }
    36  
    37  func testReadFile(path string) ([]byte, error) {
    38  	return []byte("content-for-" + path), nil
    39  }
    40  
    41  func TestReadFile(t *testing.T) {
    42  	prefixToReadfunc["test://"] = testReadFile
    43  
    44  	// Virtual file
    45  	testPath := "test://test-file"
    46  
    47  	// Disk file
    48  	tempContent := "temp-content"
    49  	tempPath := createTempFile(t, []byte(tempContent))
    50  
    51  	testData := map[string]string{
    52  		testPath: "content-for-test-file",
    53  		tempPath: tempContent,
    54  	}
    55  
    56  	for path, expectedContent := range testData {
    57  		t.Run("ReadFile("+path+")", func(t *testing.T) {
    58  			b, err := ReadFile(path)
    59  			if err != nil {
    60  				t.Fatalf("Error while reading the file: %s", path)
    61  			}
    62  
    63  			if string(b) != expectedContent {
    64  				t.Errorf("ReadFile(%s) = %s, expected=%s", path, string(b), expectedContent)
    65  			}
    66  		})
    67  	}
    68  }