Update Versioning to Improve Output (#5000)

* Update Versioning to Improve Output

* Always get commit from build info, always get date and version from ldflag

* Just replace broken main output with semver and deprecate short flag as is

---------

Co-authored-by: Katrina Verey <katrina.verey@shopify.com>

api/provenance/provenance_test.go

@@ -0,0 +1,47 @@
+// Copyright 2022 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+package provenance_test
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"sigs.k8s.io/kustomize/api/provenance"
+)
+
+const expectedBuildDateFromLdFlag = "2023-01-31T23:38:41Z"
+const expectedVersionFromLdFlag = "(test)"
+
+func TestGetProvenance(t *testing.T) {
+	p := provenance.GetProvenance()
+	// These are set by ldflags in our Makefile
+	assert.Equal(t, expectedVersionFromLdFlag, p.Version)
+	assert.Equal(t, expectedBuildDateFromLdFlag, p.BuildDate)
+	// This comes from BuildInfo, which is not set during go test: https://github.com/golang/go/issues/33976
+	assert.Equal(t, "unknown", p.GitCommit)
+
+	// These are set properly during go test
+	assert.NotEmpty(t, p.GoArch)
+	assert.NotEmpty(t, p.GoOs)
+	assert.Contains(t, p.GoVersion, "go1.")
+}
+
+func TestProvenance_Short(t *testing.T) {
+	p := provenance.GetProvenance()
+	// The version not set during go test, so this comes from an ldflag: https://github.com/golang/go/issues/33976
+	assert.Equal(t, fmt.Sprintf("{%s  %s   }", expectedVersionFromLdFlag, expectedBuildDateFromLdFlag), p.Short())
+
+	p.Version = "kustomize/v4.11.12"
+	assert.Equal(t, fmt.Sprintf("{kustomize/v4.11.12  %s   }", expectedBuildDateFromLdFlag), p.Short())
+}
+
+func TestProvenance_Semver(t *testing.T) {
+	p := provenance.GetProvenance()
+	// The version not set during go test
+	assert.Equal(t, "(test)", p.Semver())
+
+	p.Version = "kustomize/v4.11.12"
+	assert.Equal(t, "v4.11.12", p.Semver())
+}