Test helper function nextAligned

Make sure the nextAligned function is giving a number that is equal or larger than the input. Since the code does not work with non-power-of-two alignments, that is not tested. Signed-off-by: Marcelo E. Magallon <[email protected]>
apptainer · Apr 3, 2019 · a9c017e · a9c017e
1 parent 22d2d2b
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diff --git a/pkg/sif/create_test.go b/pkg/sif/create_test.go
@@ -20,6 +20,29 @@ const (
 	descrLen  = 585
 )
 
+func TestNextAligned(t *testing.T) {
+	cases := []struct {
+		name     string
+		offset   int64
+		align    int
+		expected int64
+	}{
+		{name: "align 0 to 1024", offset: 0, align: 1024, expected: 0},
+		{name: "align 1 to 1024", offset: 1, align: 1024, expected: 1024},
+		{name: "align 1023 to 1024", offset: 1023, align: 1024, expected: 1024},
+		{name: "align 1024 to 1024", offset: 1024, align: 1024, expected: 1024},
+		{name: "align 1025 to 1024", offset: 1025, align: 1024, expected: 2048},
+	}
+
+	for _, tc := range cases {
+		actual := nextAligned(tc.offset, tc.align)
+		if actual != tc.expected {
+			t.Errorf("nextAligned case: %q, offset: %d, align: %d, expecting: %d, actual: %d\n",
+				tc.name, tc.offset, tc.align, tc.expected, actual)
+		}
+	}
+}
+
 func TestDataStructs(t *testing.T) {
 	var header Header
 	var descr Descriptor

diff --git a/pkg/sif/testdata/testcontainer1.sif b/pkg/sif/testdata/testcontainer1.sif