Fix tests

- WCOW units by checking for 'windows' in error string
- LCOW acceptance by printing a log line and checking it instead of expecting an error

Signed-off-by: Natalie Arellano <narellano@vmware.com>

Author: Natalie Arellano

acceptance/acceptance_test.go

@@ -2517,17 +2517,15 @@ include = [ "*.jar", "media/mountain.jpg", "/media/person.png", ]
 							if hostArch := imageManager.HostArch(); hostArch == wrongArch {
 								wrongArch = "amd64"
 							}
-							// FIXME: on an M1 with emulation enabled this test might pass when we expect it to fail
 						})
 
 						it("uses the builder with the desired platform", func() {
-							output, err := pack.Run(
+							output, _ := pack.Run(
 								"build", repoName,
 								"-p", filepath.Join("testdata", "mock_app"),
 								"--platform", fmt.Sprintf("linux/%s", wrongArch),
 							)
-							h.AssertNotNil(t, err)
-							h.AssertContains(t, output, "was found but does not match the specified platform")
+							h.AssertContainsMatch(t, output, fmt.Sprintf("Pulling image '.+' with platform 'linux/%s'", wrongArch))
 						})
 					})
 				})

pkg/image/fetcher.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"encoding/base64"
 	"encoding/json"
+	"fmt"
 	"io"
 	"strings"
 
@@ -108,14 +109,20 @@ func (f *Fetcher) Fetch(ctx context.Context, name string, options FetchOptions)
 		}
 	}
 
-	f.logger.Debugf("Pulling image %s", style.Symbol(name))
+	msg := fmt.Sprintf("Pulling image %s", style.Symbol(name))
+	if options.Platform != "" {
+		msg = fmt.Sprintf("Pulling image %s with platform %s", style.Symbol(name), style.Symbol(options.Platform))
+	}
+	f.logger.Debug(msg)
 	if err = f.pullImage(ctx, name, options.Platform); err != nil {
 		// FIXME: this matching is brittle and the fallback should be removed when https://github.com/buildpacks/pack/issues/2079
 		// has been fixed for a sufficient amount of time.
 		// Sample error from docker engine:
 		// `image with reference <image> was found but does not match the specified platform: wanted linux/amd64, actual: linux`
 		if strings.Contains(err.Error(), "does not match the specified platform") &&
-			strings.HasSuffix(strings.TrimSpace(err.Error()), "actual: linux") {
+			(strings.HasSuffix(strings.TrimSpace(err.Error()), "actual: linux") ||
+				strings.HasSuffix(strings.TrimSpace(err.Error()), "actual: windows")) {
+			f.logger.Debugf(fmt.Sprintf("Pulling image %s", style.Symbol(name)))
 			err = f.pullImage(ctx, name, "")
 		}
 	}