DockerCLI/templates/templates_test.go

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package templates
import (
"bytes"
"testing"
"gotest.tools/v3/assert"
is "gotest.tools/v3/assert/cmp"
)
// GitHub #32120
func TestParseJSONFunctions(t *testing.T) {
tm, err := Parse(`{{json .Ports}}`)
assert.NilError(t, err)
var b bytes.Buffer
assert.NilError(t, tm.Execute(&b, map[string]string{"Ports": "0.0.0.0:2->8/udp"}))
want := "\"0.0.0.0:2->8/udp\""
assert.Check(t, is.Equal(want, b.String()))
}
func TestParseStringFunctions(t *testing.T) {
tm, err := Parse(`{{join (split . ":") "/"}}`)
assert.NilError(t, err)
var b bytes.Buffer
assert.NilError(t, tm.Execute(&b, "text:with:colon"))
want := "text/with/colon"
assert.Check(t, is.Equal(want, b.String()))
}
func TestNewParse(t *testing.T) {
tm, err := NewParse("foo", "this is a {{ . }}")
assert.NilError(t, err)
var b bytes.Buffer
assert.NilError(t, tm.Execute(&b, "string"))
want := "this is a string"
assert.Check(t, is.Equal(want, b.String()))
}
func TestParseTruncateFunction(t *testing.T) {
source := "tupx5xzf6hvsrhnruz5cr8gwp"
testCases := []struct {
template string
expected string
}{
{
template: `{{truncate . 5}}`,
expected: "tupx5",
},
{
template: `{{truncate . 25}}`,
expected: "tupx5xzf6hvsrhnruz5cr8gwp",
},
{
template: `{{truncate . 30}}`,
expected: "tupx5xzf6hvsrhnruz5cr8gwp",
},
{
template: `{{pad . 3 3}}`,
expected: " tupx5xzf6hvsrhnruz5cr8gwp ",
},
}
for _, testCase := range testCases {
testCase := testCase
tm, err := Parse(testCase.template)
assert.NilError(t, err)
t.Run("Non Empty Source Test with template: "+testCase.template, func(t *testing.T) {
var b bytes.Buffer
assert.NilError(t, tm.Execute(&b, source))
assert.Check(t, is.Equal(testCase.expected, b.String()))
})
t.Run("Empty Source Test with template: "+testCase.template, func(t *testing.T) {
var c bytes.Buffer
assert.NilError(t, tm.Execute(&c, ""))
assert.Check(t, is.Equal("", c.String()))
})
t.Run("Nil Source Test with template: "+testCase.template, func(t *testing.T) {
var c bytes.Buffer
assert.Check(t, tm.Execute(&c, nil) != nil)
assert.Check(t, is.Equal("", c.String()))
})
}
}