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|
package tracing
import (
"context"
"os"
"reflect"
"testing"
"github.com/stretchr/testify/require"
"gitlab.com/gitlab-org/labkit/correlation"
)
func TestExtractFromEnv(t *testing.T) {
tests := []struct {
name string
ctx context.Context
opts []ExtractFromEnvOption
additionalEnv map[string]string
wantCorrelationID string
}{
{
name: "no_options",
ctx: context.Background(),
opts: []ExtractFromEnvOption{},
},
{
name: "pass_correlation_id",
ctx: context.Background(),
opts: []ExtractFromEnvOption{},
additionalEnv: map[string]string{
envCorrelationIDKey: "abc123",
},
wantCorrelationID: "abc123",
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
resetEnvironment := addAdditionalEnv(tt.additionalEnv)
defer resetEnvironment()
ctx, finished := ExtractFromEnv(tt.ctx, tt.opts...)
require.NotNil(t, ctx, "ctx is nil")
require.NotNil(t, finished, "finished is nil")
gotCorrelationID := correlation.ExtractFromContext(ctx)
require.Equal(t, tt.wantCorrelationID, gotCorrelationID)
defer finished()
})
}
}
func Test_environAsMap(t *testing.T) {
tests := []struct {
name string
env []string
want map[string]string
}{
{
name: "trivial",
env: nil,
want: map[string]string{},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
if got := environAsMap(tt.env); !reflect.DeepEqual(got, tt.want) {
t.Errorf("environAsMap() = %v, want %v", got, tt.want)
}
})
}
}
// addAdditionalEnv will configure additional environment values
// and return a deferrable function to reset the environment to
// it's original state after the test.
func addAdditionalEnv(envMap map[string]string) func() {
prevValues := map[string]string{}
unsetValues := []string{}
for k, v := range envMap {
value, exists := os.LookupEnv(k)
if exists {
prevValues[k] = value
} else {
unsetValues = append(unsetValues, k)
}
os.Setenv(k, v)
}
return func() {
for k, v := range prevValues {
os.Setenv(k, v)
}
for _, k := range unsetValues {
os.Unsetenv(k)
}
}
}
|
