DockerCLI/compose/interpolation/interpolation_test.go

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package interpolation
import (
"testing"
"github.com/stretchr/testify/assert"
"github.com/docker/docker/cli/compose/types"
)
var defaults = map[string]string{
"USER": "jenny",
"FOO": "bar",
}
func defaultMapping(name string) (string, bool) {
val, ok := defaults[name]
return val, ok
}
func TestInterpolate(t *testing.T) {
services := types.Dict{
"servicea": types.Dict{
"image": "example:${USER}",
"volumes": []interface{}{"$FOO:/target"},
"logging": types.Dict{
"driver": "${FOO}",
"options": types.Dict{
"user": "$USER",
},
},
},
}
expected := types.Dict{
"servicea": types.Dict{
"image": "example:jenny",
"volumes": []interface{}{"bar:/target"},
"logging": types.Dict{
"driver": "bar",
"options": types.Dict{
"user": "jenny",
},
},
},
}
result, err := Interpolate(services, "service", defaultMapping)
assert.NoError(t, err)
assert.Equal(t, expected, result)
}
func TestInvalidInterpolation(t *testing.T) {
services := types.Dict{
"servicea": types.Dict{
"image": "${",
},
}
_, err := Interpolate(services, "service", defaultMapping)
assert.EqualError(t, err, `Invalid interpolation format for "image" option in service "servicea": "${"`)
}