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16 changes: 15 additions & 1 deletion test/cli/trait_assertions_test.go
Original file line number Diff line number Diff line change
Expand Up @@ -2,10 +2,12 @@ package cli

import (
"encoding/json"
"fmt"
"os"
"os/exec"
"path/filepath"
"regexp"
"sort"
"strings"
"testing"

Expand Down Expand Up @@ -104,8 +106,12 @@ func assertStdoutLengthGreaterThan(length uint) traitAssertion {
func assertPackageCount(length uint) traitAssertion {
return func(tb testing.TB, stdout, _ string, _ int) {
tb.Helper()
type NameAndVersion struct {
Name string `json:"name"`
Version string `json:"version"`
}
type partial struct {
Artifacts []interface{} `json:"artifacts"`
Artifacts []NameAndVersion `json:"artifacts"`
}
var data partial

Expand All @@ -115,6 +121,14 @@ func assertPackageCount(length uint) traitAssertion {

if uint(len(data.Artifacts)) != length {
tb.Errorf("expected package count of %d, but found %d", length, len(data.Artifacts))
debugArtifacts := make([]string, len(data.Artifacts))
for i, a := range data.Artifacts {
debugArtifacts[i] = fmt.Sprintf("%s:%s", a.Name, a.Version)
}
sort.Strings(debugArtifacts)
for i, a := range debugArtifacts {
tb.Errorf("package %d: %s", i+1, a)
}

}
}
Expand Down