19 lines
481 B
Go
19 lines
481 B
Go
package runtime_test
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import (
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"testing"
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)
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func TestIncDec(t *testing.T) {
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expect(t, `out++`, 1)
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expect(t, `out--`, -1)
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expect(t, `a := 0; a++; out = a`, 1)
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expect(t, `a := 0; a++; a--; out = a`, 0)
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expectError(t, `a++`) // not declared
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expectError(t, `a--`) // not declared
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expectError(t, `a := "foo"; a++`) // invalid operand
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//expectError(t, `a := 0; b := a++`) // inc-dec is statement not expression <- parser error
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expectError(t, `4++`)
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}
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