env_test.go

Documentation: k8s.io/utils/env

     1  /*
     2  Copyright 2015 The Kubernetes Authors.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package env
    18  
    19  import (
    20  	"os"
    21  	"strconv"
    22  	"testing"
    23  )
    24  
    25  func TestGetString(t *testing.T) {
    26  	const expected = "foo"
    27  
    28  	key := "STRING_SET_VAR"
    29  	os.Setenv(key, expected)
    30  	if e, a := expected, GetString(key, "~"+expected); e != a {
    31  		t.Fatalf("expected %#v==%#v", e, a)
    32  	}
    33  
    34  	key = "STRING_UNSET_VAR"
    35  	if e, a := expected, GetString(key, expected); e != a {
    36  		t.Fatalf("expected %#v==%#v", e, a)
    37  	}
    38  }
    39  
    40  func TestGetInt(t *testing.T) {
    41  	const expected = 1
    42  	const defaultValue = 2
    43  
    44  	key := "INT_SET_VAR"
    45  	os.Setenv(key, strconv.Itoa(expected))
    46  	returnVal, _ := GetInt(key, defaultValue)
    47  	if e, a := expected, returnVal; e != a {
    48  		t.Fatalf("expected %#v==%#v", e, a)
    49  	}
    50  
    51  	key = "INT_UNSET_VAR"
    52  	returnVal, _ = GetInt(key, defaultValue)
    53  	if e, a := defaultValue, returnVal; e != a {
    54  		t.Fatalf("expected %#v==%#v", e, a)
    55  	}
    56  
    57  	key = "INT_SET_VAR"
    58  	os.Setenv(key, "not-an-int")
    59  	returnVal, err := GetInt(key, defaultValue)
    60  	if e, a := defaultValue, returnVal; e != a {
    61  		t.Fatalf("expected %#v==%#v", e, a)
    62  	}
    63  	if err == nil {
    64  		t.Error("expected error")
    65  	}
    66  }
    67  
    68  func TestGetFloat64(t *testing.T) {
    69  	const expected = 1.0
    70  	const defaultValue = 2.0
    71  
    72  	key := "FLOAT_SET_VAR"
    73  	os.Setenv(key, "1.0")
    74  	returnVal, _ := GetFloat64(key, defaultValue)
    75  	if e, a := expected, returnVal; e != a {
    76  		t.Fatalf("expected %#v==%#v", e, a)
    77  	}
    78  
    79  	key = "FLOAT_UNSET_VAR"
    80  	returnVal, _ = GetFloat64(key, defaultValue)
    81  	if e, a := defaultValue, returnVal; e != a {
    82  		t.Fatalf("expected %#v==%#v", e, a)
    83  	}
    84  
    85  	key = "FLOAT_SET_VAR"
    86  	os.Setenv(key, "not-a-float")
    87  	returnVal, err := GetFloat64(key, defaultValue)
    88  	if e, a := defaultValue, returnVal; e != a {
    89  		t.Fatalf("expected %#v==%#v", e, a)
    90  	}
    91  	if err == nil || err.Error() != "strconv.ParseFloat: parsing \"not-a-float\": invalid syntax" {
    92  		t.Fatalf("unexpected error: %#v", err)
    93  	}
    94  }
    95  
    96  func TestGetBool(t *testing.T) {
    97  	const expected = true
    98  	const defaultValue = false
    99  
   100  	key := "BOOL_SET_VAR"
   101  	os.Setenv(key, "true")
   102  	returnVal, _ := GetBool(key, defaultValue)
   103  	if e, a := expected, returnVal; e != a {
   104  		t.Fatalf("expected %#v==%#v", e, a)
   105  	}
   106  
   107  	key = "BOOL_UNSET_VAR"
   108  	returnVal, _ = GetBool(key, defaultValue)
   109  	if e, a := defaultValue, returnVal; e != a {
   110  		t.Fatalf("expected %#v==%#v", e, a)
   111  	}
   112  
   113  	key = "BOOL_SET_VAR"
   114  	os.Setenv(key, "not-a-bool")
   115  	returnVal, err := GetBool(key, defaultValue)
   116  	if e, a := defaultValue, returnVal; e != a {
   117  		t.Fatalf("expected %#v==%#v", e, a)
   118  	}
   119  	if err == nil || err.Error() != "strconv.ParseBool: parsing \"not-a-bool\": invalid syntax" {
   120  		t.Fatalf("unexpected error: %#v", err)
   121  	}
   122  }
   123
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