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moby--moby/cli/command/formatter/disk_usage_test.go
Aaron Lehmann 6052f2b396 Remove pkg/testutil/assert in favor of testify
I noticed that we're using a homegrown package for assertions. The
functions are extremely similar to testify, but with enough slight
differences to be confusing (for example, Equal takes its arguments in a
different order). We already vendor testify, and it's used in a few
places by tests.

I also found some problems with pkg/testutil/assert. For example, the
NotNil function seems to be broken. It checks the argument against
"nil", which only works for an interface. If you pass in a nil map or
slice, the equality check will fail.

In the interest of avoiding NIH, I'm proposing replacing
pkg/testutil/assert with testify. The test code looks almost the same,
but we avoid the confusion of having two similar but slightly different
assertion packages, and having to maintain our own package instead of
using a commonly-used one.

In the process, I found a few places where the tests should halt if an
assertion fails, so I've made those cases (that I noticed) use "require"
instead of "assert", and I've vendored the "require" package from
testify alongside the already-present "assert" package.

Signed-off-by: Aaron Lehmann <aaron.lehmann@docker.com>
2017-04-14 12:03:21 -07:00

125 lines
2.8 KiB
Go

package formatter
import (
"bytes"
"testing"
"github.com/stretchr/testify/assert"
)
func TestDiskUsageContextFormatWrite(t *testing.T) {
cases := []struct {
context DiskUsageContext
expected string
}{
// Check default output format (verbose and non-verbose mode) for table headers
{
DiskUsageContext{
Context: Context{
Format: NewDiskUsageFormat("table"),
},
Verbose: false},
`TYPE TOTAL ACTIVE SIZE RECLAIMABLE
Images 0 0 0B 0B
Containers 0 0 0B 0B
Local Volumes 0 0 0B 0B
`,
},
{
DiskUsageContext{Verbose: true},
`Images space usage:
REPOSITORY TAG IMAGE ID CREATED ago SIZE SHARED SIZE UNIQUE SiZE CONTAINERS
Containers space usage:
CONTAINER ID IMAGE COMMAND LOCAL VOLUMES SIZE CREATED ago STATUS NAMES
Local Volumes space usage:
VOLUME NAME LINKS SIZE
`,
},
// Errors
{
DiskUsageContext{
Context: Context{
Format: "{{InvalidFunction}}",
},
},
`Template parsing error: template: :1: function "InvalidFunction" not defined
`,
},
{
DiskUsageContext{
Context: Context{
Format: "{{nil}}",
},
},
`Template parsing error: template: :1:2: executing "" at <nil>: nil is not a command
`,
},
// Table Format
{
DiskUsageContext{
Context: Context{
Format: NewDiskUsageFormat("table"),
},
},
`TYPE TOTAL ACTIVE SIZE RECLAIMABLE
Images 0 0 0B 0B
Containers 0 0 0B 0B
Local Volumes 0 0 0B 0B
`,
},
{
DiskUsageContext{
Context: Context{
Format: NewDiskUsageFormat("table {{.Type}}\t{{.Active}}"),
},
},
`TYPE ACTIVE
Images 0
Containers 0
Local Volumes 0
`,
},
// Raw Format
{
DiskUsageContext{
Context: Context{
Format: NewDiskUsageFormat("raw"),
},
},
`type: Images
total: 0
active: 0
size: 0B
reclaimable: 0B
type: Containers
total: 0
active: 0
size: 0B
reclaimable: 0B
type: Local Volumes
total: 0
active: 0
size: 0B
reclaimable: 0B
`,
},
}
for _, testcase := range cases {
out := bytes.NewBufferString("")
testcase.context.Output = out
if err := testcase.context.Write(); err != nil {
assert.Equal(t, testcase.expected, err.Error())
} else {
assert.Equal(t, testcase.expected, out.String())
}
}
}