Consul is a distributed, highly available, and data center aware solution to connect and configure applications across dynamic, distributed infrastructure.
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package config
import (
"fmt"
"io/ioutil"
"net"
"os"
"path/filepath"
"strings"
"testing"
"time"
"github.com/stretchr/testify/require"
)
func TestLoad(t *testing.T) {
// Basically just testing that injection of the extra
// source works.
devMode := true
builderOpts := BuilderOpts{
// putting this in dev mode so that the config validates
// without having to specify a data directory
DevMode: &devMode,
}
cfg, warnings, err := Load(builderOpts, FileSource{
Name: "test",
Format: "hcl",
Data: `node_name = "hobbiton"`,
},
FileSource{
Name: "overrides",
Format: "json",
Data: `{"check_reap_interval": "1ms"}`,
})
require.NoError(t, err)
require.Empty(t, warnings)
require.NotNil(t, cfg)
require.Equal(t, "hobbiton", cfg.NodeName)
require.Equal(t, 1*time.Millisecond, cfg.CheckReapInterval)
}
func TestShouldParseFile(t *testing.T) {
var testcases = []struct {
filename string
configFormat string
expected bool
}{
{filename: "config.json", expected: true},
{filename: "config.hcl", expected: true},
{filename: "config", configFormat: "hcl", expected: true},
{filename: "config.js", configFormat: "json", expected: true},
{filename: "config.yaml", expected: false},
}
for _, tc := range testcases {
name := fmt.Sprintf("filename=%s, format=%s", tc.filename, tc.configFormat)
t.Run(name, func(t *testing.T) {
require.Equal(t, tc.expected, shouldParseFile(tc.filename, tc.configFormat))
})
}
}
func TestNewBuilder_PopulatesSourcesFromConfigFiles(t *testing.T) {
paths := setupConfigFiles(t)
b, err := NewBuilder(BuilderOpts{ConfigFiles: paths})
require.NoError(t, err)
expected := []Source{
FileSource{Name: paths[0], Format: "hcl", Data: "content a"},
FileSource{Name: paths[1], Format: "json", Data: "content b"},
FileSource{Name: filepath.Join(paths[3], "a.hcl"), Format: "hcl", Data: "content a"},
FileSource{Name: filepath.Join(paths[3], "b.json"), Format: "json", Data: "content b"},
}
require.Equal(t, expected, b.Sources)
require.Len(t, b.Warnings, 2)
}
func TestNewBuilder_PopulatesSourcesFromConfigFiles_WithConfigFormat(t *testing.T) {
paths := setupConfigFiles(t)
b, err := NewBuilder(BuilderOpts{ConfigFiles: paths, ConfigFormat: "hcl"})
require.NoError(t, err)
expected := []Source{
FileSource{Name: paths[0], Format: "hcl", Data: "content a"},
FileSource{Name: paths[1], Format: "hcl", Data: "content b"},
FileSource{Name: paths[2], Format: "hcl", Data: "content c"},
FileSource{Name: filepath.Join(paths[3], "a.hcl"), Format: "hcl", Data: "content a"},
FileSource{Name: filepath.Join(paths[3], "b.json"), Format: "hcl", Data: "content b"},
FileSource{Name: filepath.Join(paths[3], "c.yaml"), Format: "hcl", Data: "content c"},
}
require.Equal(t, expected, b.Sources)
}
// TODO: this would be much nicer with gotest.tools/fs
func setupConfigFiles(t *testing.T) []string {
t.Helper()
path, err := ioutil.TempDir("", t.Name())
require.NoError(t, err)
t.Cleanup(func() { os.RemoveAll(path) })
subpath := filepath.Join(path, "sub")
err = os.Mkdir(subpath, 0755)
require.NoError(t, err)
for _, dir := range []string{path, subpath} {
err = ioutil.WriteFile(filepath.Join(dir, "a.hcl"), []byte("content a"), 0644)
require.NoError(t, err)
err = ioutil.WriteFile(filepath.Join(dir, "b.json"), []byte("content b"), 0644)
require.NoError(t, err)
err = ioutil.WriteFile(filepath.Join(dir, "c.yaml"), []byte("content c"), 0644)
require.NoError(t, err)
}
return []string{
filepath.Join(path, "a.hcl"),
filepath.Join(path, "b.json"),
filepath.Join(path, "c.yaml"),
subpath,
}
}
func TestBuilder_BuildAndValidate_NodeName(t *testing.T) {
type testCase struct {
name string
nodeName string
expectedWarn string
}
fn := func(t *testing.T, tc testCase) {
b, err := NewBuilder(BuilderOpts{
Config: Config{
NodeName: pString(tc.nodeName),
DataDir: pString("dir"),
},
})
patchBuilderShims(b)
require.NoError(t, err)
_, err = b.BuildAndValidate()
require.NoError(t, err)
require.Len(t, b.Warnings, 1)
require.Contains(t, b.Warnings[0], tc.expectedWarn)
}
var testCases = []testCase{
{
name: "invalid character - unicode",
nodeName: "🐼",
expectedWarn: `Node name "🐼" will not be discoverable via DNS due to invalid characters`,
},
{
name: "invalid character - slash",
nodeName: "thing/other/ok",
expectedWarn: `Node name "thing/other/ok" will not be discoverable via DNS due to invalid characters`,
},
{
name: "too long",
nodeName: strings.Repeat("a", 66),
expectedWarn: "due to it being too long.",
},
}
for _, tc := range testCases {
t.Run(tc.name, func(t *testing.T) {
fn(t, tc)
})
}
}
func patchBuilderShims(b *Builder) {
b.hostname = func() (string, error) {
return "thehostname", nil
}
b.getPrivateIPv4 = func() ([]*net.IPAddr, error) {
return []*net.IPAddr{ipAddr("10.0.0.1")}, nil
}
b.getPublicIPv6 = func() ([]*net.IPAddr, error) {
return []*net.IPAddr{ipAddr("dead:beef::1")}, nil
}
}