Add more test coverage for manifest/

manifest/example_test.go

@@ -59,6 +59,8 @@ GitCommit: d7e2a8d90a9b8f5dfd5bcd428e0c33b68c40cc19
 Directory: 1.5
 File: Dockerfile.alpine
 s390x-File: Dockerfile.alpine.s390x.bad-boy
+Builder: buildkit
+GitFetch: refs/heads/having-a-good-time
 
 SharedTags: raspbian
 GitCommit: deadbeefdeadbeefdeadbeefdeadbeefdeadbeef
@@ -105,9 +107,11 @@ s390x-File: Dockerfile
 	// s390x-GitCommit: b6c460e7cd79b595267870a98013ec3078b490df
 	//
 	// Tags: 1.5-alpine
+	// GitFetch: refs/heads/having-a-good-time
 	// GitCommit: d7e2a8d90a9b8f5dfd5bcd428e0c33b68c40cc19
 	// Directory: 1.5
 	// File: Dockerfile.alpine
+	// Builder: buildkit
 	// s390x-File: Dockerfile.alpine.s390x.bad-boy
 	//
 	// Tags: raspbian-s390x

manifest/fetch.go

@@ -68,7 +68,7 @@ func Fetch(library, repo string) (string, string, *Manifest2822, error) {
 
 	// try file paths
 	filePaths := []string{}
-	if filepath.IsAbs(repo) || strings.IndexRune(repo, filepath.Separator) >= 0 || strings.IndexRune(repo, '/') >= 0 {
+	if filepath.IsAbs(repo) || strings.ContainsRune(repo, filepath.Separator) || strings.ContainsRune(repo, '/') {
 		filePaths = append(filePaths, repo)
 	}
 	if !filepath.IsAbs(repo) {

manifest/fetch_test.go

@@ -2,13 +2,14 @@ package manifest_test
 
 import (
 	"errors"
+	"strings"
 	"testing"
 
 	"github.com/docker-library/bashbrew/manifest"
 )
 
 func TestFetchErrors(t *testing.T) {
-	repoName, tagName, _, err := manifest.Fetch("testdata", "bash:69.420")
+	repoName, tagName, _, err := manifest.Fetch("/dev/null", "testdata/bash:69.420")
 	if err == nil {
 		t.Fatalf("expected tag-not-found error, got repoName=%q, tagName=%q instead", repoName, tagName)
 	}
@@ -27,4 +28,40 @@ func TestFetchErrors(t *testing.T) {
 		t.Fatalf("expected manifest-not-found error, got %q instead", err)
 	}
 	t.Logf("correct, expected error: %s", err)
+
+	repoName, tagName, _, err = manifest.Fetch("/dev/null", "/proc/kmsg")
+	if err == nil {
+		t.Fatalf("expected filesystem error, got repoName=%q, tagName=%q instead", repoName, tagName)
+	}
+	if !strings.Contains(err.Error(), "permission denied") && !strings.Contains(err.Error(), "not permitted") {
+		t.Fatalf("expected filesystem error, got %q instead", err)
+	}
+	t.Logf("correct, expected error: %s", err)
+
+	repoName, tagName, _, err = manifest.Fetch("/dev/null", "./testdata")
+	if err == nil {
+		t.Fatalf("expected directory error, got repoName=%q, tagName=%q instead", repoName, tagName)
+	}
+	if !strings.Contains(err.Error(), "is a directory") {
+		t.Fatalf("expected directory error, got %q instead", err)
+	}
+	t.Logf("correct, expected error: %s", err)
+
+	repoName, tagName, _, err = manifest.Fetch("/dev/null", "https://nonexistent.subdomain.example.com/nonexistent-project:1.2.3")
+	if err == nil {
+		t.Fatalf("expected no such host error, got repoName=%q, tagName=%q instead", repoName, tagName)
+	}
+	if !strings.Contains(err.Error(), "no such host") {
+		t.Fatalf("expected no such host error, got %q instead", err)
+	}
+	t.Logf("correct, expected error: %s", err)
+
+	repoName, tagName, _, err = manifest.Fetch("/dev/null", "https://example.com:1.2.3")
+	if err == nil {
+		t.Fatalf("expected parse error, got repoName=%q, tagName=%q instead", repoName, tagName)
+	}
+	if !strings.HasPrefix(err.Error(), "Bad line:") {
+		t.Fatalf("expected parse error, got %q instead", err)
+	}
+	t.Logf("correct, expected error: %s", err)
 }