github.phpd.cn/cilium/cilium@v1.6.12/pkg/aws/eni/node_test.go (about)

     1  // Copyright 2019 Authors of Cilium
     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  // +build !privileged_tests
    16  
    17  package eni
    18  
    19  import (
    20  	"gopkg.in/check.v1"
    21  )
    22  
    23  type testNeededDef struct {
    24  	available   int
    25  	used        int
    26  	preallocate int
    27  	minallocate int
    28  	result      int
    29  }
    30  
    31  type testExcessDef struct {
    32  	available         int
    33  	used              int
    34  	preallocate       int
    35  	minallocate       int
    36  	maxabovewatermark int
    37  	result            int
    38  }
    39  
    40  var neededDef = []testNeededDef{
    41  	{0, 0, 0, 16, 16},
    42  	{0, 0, 8, 16, 16},
    43  	{0, 0, 16, 8, 16},
    44  	{0, 0, 16, 0, 16},
    45  	{8, 0, 0, 16, 8},
    46  	{8, 4, 8, 0, 4},
    47  	{8, 4, 8, 8, 4},
    48  }
    49  
    50  var excessDef = []testExcessDef{
    51  	{0, 0, 0, 16, 0, 0},
    52  	{15, 0, 8, 16, 8, 0},
    53  	{17, 0, 8, 16, 0, 9}, // 17 used, 8 pre-allocate, 16 min-allocate => 1 excess
    54  	{20, 0, 8, 16, 4, 0}, // 20 used, 8 pre-allocate, 16 min-allocate, 4 max-above-watermark => 0 excess
    55  	{21, 0, 8, 0, 4, 9},  // 21 used, 8 pre-allocate, 4 max-above-watermark => 9 excess
    56  	{20, 0, 8, 20, 8, 0},
    57  	{16, 1, 8, 16, 8, 0},
    58  	{20, 4, 8, 17, 8, 0},
    59  	{20, 4, 0, 0, 0, 8},
    60  	{20, 4, 0, 0, 8, 0},
    61  }
    62  
    63  func (e *ENISuite) TestCalculateNeededIPs(c *check.C) {
    64  	for _, d := range neededDef {
    65  		result := calculateNeededIPs(d.available, d.used, d.preallocate, d.minallocate)
    66  		c.Assert(result, check.Equals, d.result)
    67  	}
    68  }
    69  
    70  func (e *ENISuite) TestCalculateExcessIPs(c *check.C) {
    71  	for _, d := range excessDef {
    72  		result := calculateExcessIPs(d.available, d.used, d.preallocate, d.minallocate, d.maxabovewatermark)
    73  		c.Assert(result, check.Equals, d.result)
    74  	}
    75  }