X-Git-Url: https://git.arvados.org/arvados.git/blobdiff_plain/5bcba288077488791daa43a15d5fd5fb0c6e653c..29dd43933769bf47d0018d967037bc31b679dfd9:/sdk/go/blockdigest/blockdigest_test.go

diff --git a/sdk/go/blockdigest/blockdigest_test.go b/sdk/go/blockdigest/blockdigest_test.go
index 9081bb846c..068a1385ae 100644
--- a/sdk/go/blockdigest/blockdigest_test.go
+++ b/sdk/go/blockdigest/blockdigest_test.go
@@ -1,6 +1,7 @@
 package blockdigest
 
 import (
+	"fmt"
 	"strings"
 	"testing"
 )
@@ -13,8 +14,8 @@ func expectValidDigestString(t *testing.T, s string) {
 
 	expected := strings.ToLower(s)
 		
-	if expected != bd.ToString() {
-		t.Fatalf("Expected %s to be returned by FromString(%s).ToString() but instead we received %s", expected, s, bd.ToString())
+	if expected != bd.String() {
+		t.Fatalf("Expected %s to be returned by FromString(%s).String() but instead we received %s", expected, s, bd.String())
 	}
 }
 
@@ -43,3 +44,36 @@ func TestBlockDigestWorksAsMapKey(t *testing.T) {
 	bd := AssertFromString("01234567890123456789abcdefabcdef")
 	m[bd] = 5
 }
+
+func TestBlockDigestGetsPrettyPrintedByPrintf(t *testing.T) {
+	input := "01234567890123456789abcdefabcdef"
+	prettyPrinted := fmt.Sprintf("%v", AssertFromString(input))
+	if prettyPrinted != input {
+		t.Fatalf("Expected blockDigest produced from \"%s\" to be printed as " +
+			"\"%s\", but instead it was printed as %s",
+			input, input, prettyPrinted)
+	}
+}
+
+func TestBlockDigestGetsPrettyPrintedByPrintfInNestedStructs(t *testing.T) {
+	input := "01234567890123456789abcdefabcdef"
+	value := 42
+	nested := struct{
+		// Fun trivia fact: If this field was called "digest" instead of
+		// "Digest", then it would not be exported and String() would
+		// never get called on it and our output would look very
+		// different.
+		Digest BlockDigest
+		value int
+	}{
+		AssertFromString(input),
+		value,
+	}
+	prettyPrinted := fmt.Sprintf("%+v", nested)
+	expected := fmt.Sprintf("{Digest:%s value:%d}", input, value)
+	if prettyPrinted != expected {
+		t.Fatalf("Expected blockDigest produced from \"%s\" to be printed as " +
+			"\"%s\", but instead it was printed as %s",
+			input, expected, prettyPrinted)
+	}
+}