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add a test for the mod helper #478

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add a test for the mod helper #478

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19 changes: 19 additions & 0 deletions numeric_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -249,6 +249,25 @@ func TestDivf(t *testing.T) {
}
}

func TestMod(t *testing.T) {
// {{ y | mod x }} computes x % y, matching the convention used by
// the other arithmetic helpers (the piped value is the right-hand
// operand). #458 noted that mod was documented but not covered.
tests := []struct {
tpl string
want string
}{
{`{{ 3 | mod 10 }}`, `1`},
{`{{ 5 | mod 20 }}`, `0`},
{`{{ 4 | mod 7 }}`, `3`},
}
for _, tc := range tests {
if err := runt(tc.tpl, tc.want); err != nil {
t.Errorf("%s: %v", tc.tpl, err)
}
}
}

func TestMul(t *testing.T) {
tpl := `{{ 1 | mul "2" 3 "4"}}`
if err := runt(tpl, `24`); err != nil {
Expand Down