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main_test.go
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main_test.go
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package main
import (
"flag"
"os"
"strings"
"testing"
"github.com/stretchr/testify/require"
"github.com/urfave/cli/v2"
)
func TestGetDatabaseUrl(t *testing.T) {
// set environment variables
require.NoError(t, os.Setenv("DATABASE_URL", "foo://example.org/one"))
require.NoError(t, os.Setenv("CUSTOM_URL", "foo://example.org/two"))
app := NewApp()
flagset := flag.NewFlagSet(app.Name, flag.ContinueOnError)
for _, f := range app.Flags {
require.NoError(t, f.Apply(flagset))
}
ctx := cli.NewContext(app, flagset, nil)
// no flags defaults to DATABASE_URL
u, err := getDatabaseURL(ctx)
require.NoError(t, err)
require.Equal(t, "foo://example.org/one", u.String())
// --env overwrites DATABASE_URL
require.NoError(t, ctx.Set("env", "CUSTOM_URL"))
u, err = getDatabaseURL(ctx)
require.NoError(t, err)
require.Equal(t, "foo://example.org/two", u.String())
// --url takes precedence over preceding two options
require.NoError(t, ctx.Set("url", "foo://example.org/three"))
u, err = getDatabaseURL(ctx)
require.NoError(t, err)
require.Equal(t, "foo://example.org/three", u.String())
}
func TestRedactLogString(t *testing.T) {
examples := []struct {
in string
expected string
}{
{"normal string",
"normal string"},
// malformed URL example (note forward slash in password)
{"parse \"mysql://username:otS33+tb/e4=@localhost:3306/database\": invalid",
"parse \"mysql://username:********@localhost:3306/database\": invalid"},
// invalid port, but probably not a password since there is no @
{"parse \"mysql://localhost:abc/database\": invalid",
"parse \"mysql://localhost:abc/database\": invalid"},
}
for _, ex := range examples {
require.Equal(t, ex.expected, redactLogString(ex.in))
}
}
func TestLoadEnvFiles(t *testing.T) {
setup := func(t *testing.T) {
cwd, err := os.Getwd()
if err != nil {
t.Fatal(err)
}
env := os.Environ()
os.Clearenv()
err = os.Chdir("fixtures/loadEnvFiles")
if err != nil {
t.Fatal(err)
}
t.Cleanup(func() {
err := os.Chdir(cwd)
if err != nil {
t.Fatal(err)
}
os.Clearenv()
for _, e := range env {
pair := strings.SplitN(e, "=", 2)
os.Setenv(pair[0], pair[1])
}
})
}
t.Run("default file is .env", func(t *testing.T) {
setup(t)
err := loadEnvFiles([]string{})
require.NoError(t, err)
require.Equal(t, 1, len(os.Environ()))
require.Equal(t, "default", os.Getenv("TEST_DOTENV"))
})
t.Run("valid file", func(t *testing.T) {
setup(t)
err := loadEnvFiles([]string{"--env-file", "first.txt"})
require.NoError(t, err)
require.Equal(t, 1, len(os.Environ()))
require.Equal(t, "one", os.Getenv("FIRST"))
})
t.Run("two valid files", func(t *testing.T) {
setup(t)
err := loadEnvFiles([]string{"--env-file", "first.txt", "--env-file", "second.txt"})
require.NoError(t, err)
require.Equal(t, 2, len(os.Environ()))
require.Equal(t, "one", os.Getenv("FIRST"))
require.Equal(t, "two", os.Getenv("SECOND"))
})
t.Run("nonexistent file", func(t *testing.T) {
setup(t)
err := loadEnvFiles([]string{"--env-file", "nonexistent.txt"})
require.NoError(t, err)
require.Equal(t, 0, len(os.Environ()))
})
t.Run("no overload", func(t *testing.T) {
setup(t)
// we do not load values over existing values
os.Setenv("FIRST", "not one")
err := loadEnvFiles([]string{"--env-file", "first.txt"})
require.NoError(t, err)
require.Equal(t, 1, len(os.Environ()))
require.Equal(t, "not one", os.Getenv("FIRST"))
})
t.Run("invalid file", func(t *testing.T) {
setup(t)
err := loadEnvFiles([]string{"--env-file", "invalid.txt"})
require.Error(t, err)
require.Contains(t, err.Error(), "unexpected character \"\\n\" in variable name near \"INVALID ENV FILE\\n\"")
require.Equal(t, 0, len(os.Environ()))
})
t.Run("invalid file followed by a valid file", func(t *testing.T) {
setup(t)
err := loadEnvFiles([]string{"--env-file", "invalid.txt", "--env-file", "first.txt"})
require.Error(t, err)
require.Contains(t, err.Error(), "unexpected character \"\\n\" in variable name near \"INVALID ENV FILE\\n\"")
require.Equal(t, 0, len(os.Environ()))
})
t.Run("valid file followed by an invalid file", func(t *testing.T) {
setup(t)
err := loadEnvFiles([]string{"--env-file", "first.txt", "--env-file", "invalid.txt"})
require.Error(t, err)
require.Contains(t, err.Error(), "unexpected character \"\\n\" in variable name near \"INVALID ENV FILE\\n\"")
require.Equal(t, 1, len(os.Environ()))
require.Equal(t, "one", os.Getenv("FIRST"))
})
t.Run("valid file followed by an invalid file followed by a valid file", func(t *testing.T) {
setup(t)
err := loadEnvFiles([]string{"--env-file", "first.txt", "--env-file", "invalid.txt", "--env-file", "second.txt"})
require.Error(t, err)
require.Contains(t, err.Error(), "unexpected character \"\\n\" in variable name near \"INVALID ENV FILE\\n\"")
// files after an invalid file should not get loaded
require.Equal(t, 1, len(os.Environ()))
require.Equal(t, "one", os.Getenv("FIRST"))
})
}