Improve formatting of CSums and UUIDs

1 files changed, 63 insertions, 0 deletions

diff --git a/pkg/btrfs/internal/uuid_test.go b/pkg/btrfs/internal/uuid_test.go
new file mode 100644
index 0000000..8c78570
--- /dev/null
+++ b/pkg/btrfs/internal/uuid_test.go
@@ -0,0 +1,63 @@
+package internal_test
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+
+	"lukeshu.com/btrfs-tools/pkg/btrfs/internal"
+)
+
+func TestParseUUID(t *testing.T) {
+	t.Parallel()
+	type TestCase struct {
+		Input     string
+		OutputVal internal.UUID
+		OutputErr string
+	}
+	testcases := map[string]TestCase{
+		"basic":    TestCase{Input: "a0dd94ed-e60c-42e8-8632-64e8d4765a43", OutputVal: internal.UUID{0xa0, 0xdd, 0x94, 0xed, 0xe6, 0x0c, 0x42, 0xe8, 0x86, 0x32, 0x64, 0xe8, 0xd4, 0x76, 0x5a, 0x43}},
+		"too-long": TestCase{Input: "a0dd94ed-e60c-42e8-8632-64e8d4765a43a", OutputErr: `too long to be a UUID: "a0dd94ed-e60c-42e8-8632-64e8d4765a43"|"a"`},
+		"bad char": TestCase{Input: "a0dd94ej-e60c-42e8-8632-64e8d4765a43a", OutputErr: `illegal byte in UUID: "a0dd94e"|"j"|"-e60c-42e8-8632-64e8d4765a43a"`},
+	}
+	for tcName, tc := range testcases {
+		tc := tc
+		t.Run(tcName, func(t *testing.T) {
+			t.Parallel()
+			val, err := internal.ParseUUID(tc.Input)
+			assert.Equal(t, tc.OutputVal, val)
+			if tc.OutputErr == "" {
+				assert.NoError(t, err)
+			} else {
+				assert.EqualError(t, err, tc.OutputErr)
+			}
+		})
+	}
+}
+
+func TestUUIDFormat(t *testing.T) {
+	t.Parallel()
+	type TestCase struct {
+		InputUUID internal.UUID
+		InputFmt  string
+		Output    string
+	}
+	uuid := internal.MustParseUUID("a0dd94ed-e60c-42e8-8632-64e8d4765a43")
+	testcases := map[string]TestCase{
+		"s":     TestCase{InputUUID: uuid, InputFmt: "%s", Output: "a0dd94ed-e60c-42e8-8632-64e8d4765a43"},
+		"x":     TestCase{InputUUID: uuid, InputFmt: "%x", Output: "a0dd94ede60c42e8863264e8d4765a43"},
+		"X":     TestCase{InputUUID: uuid, InputFmt: "%X", Output: "A0DD94EDE60C42E8863264E8D4765A43"},
+		"v":     TestCase{InputUUID: uuid, InputFmt: "%v", Output: "a0dd94ed-e60c-42e8-8632-64e8d4765a43"},
+		"40s":   TestCase{InputUUID: uuid, InputFmt: "|% 40s", Output: "|    a0dd94ed-e60c-42e8-8632-64e8d4765a43"},
+		"#115v": TestCase{InputUUID: uuid, InputFmt: "|%#115v", Output: "|       internal.UUID{0xa0, 0xdd, 0x94, 0xed, 0xe6, 0xc, 0x42, 0xe8, 0x86, 0x32, 0x64, 0xe8, 0xd4, 0x76, 0x5a, 0x43}"},
+	}
+	for tcName, tc := range testcases {
+		tc := tc
+		t.Run(tcName, func(t *testing.T) {
+			t.Parallel()
+			actual := fmt.Sprintf(tc.InputFmt, tc.InputUUID)
+			assert.Equal(t, tc.Output, actual)
+		})
+	}
+}