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defer_test.go
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package testing
import "testing"
func TestDefer_CanDefer(t *testing.T) {
rsl := `
defer print("bye")
print("hi")
`
setupAndRunCode(t, rsl, "--color=never")
assertOnlyOutput(t, stdOutBuffer, "hi\nbye\n")
assertNoErrors(t)
}
func TestDefer_ExecutesLifo(t *testing.T) {
rsl := `
defer print("bye1")
defer print("bye2")
print("hi")
`
setupAndRunCode(t, rsl, "--color=never")
assertOnlyOutput(t, stdOutBuffer, "hi\nbye2\nbye1\n")
assertNoErrors(t)
}
func TestDefer_Block(t *testing.T) {
rsl := `
defer:
print("bye1")
print("bye2")
print("hi")
`
setupAndRunCode(t, rsl, "--color=never")
assertOnlyOutput(t, stdOutBuffer, "hi\nbye1\nbye2\n")
assertNoErrors(t)
}
func TestDefer_RunsDespiteCleanExit(t *testing.T) {
rsl := `
defer print("bye")
print("hi")
exit(0)
`
setupAndRunCode(t, rsl, "--color=never")
assertOnlyOutput(t, stdOutBuffer, "hi\nbye\n")
assertNoErrors(t)
}
func TestDefer_RunsDespiteErrorExit(t *testing.T) {
rsl := `
defer print("bye")
print("hi")
exit(1)
`
setupAndRunCode(t, rsl, "--color=never")
assertOnlyOutput(t, stdOutBuffer, "hi\nbye\n")
assertError(t, 1, "")
}
func TestDefer_RunsDespiteError(t *testing.T) {
rsl := `
defer print("bye")
print("hi")
print(asd)
`
setupAndRunCode(t, rsl, "--color=never")
assertOutput(t, stdOutBuffer, "hi\nbye\n")
expected := `Error at L4:7
print(asd)
^^^ Undefined variable: asd
`
assertError(t, 1, expected)
}
func TestDefer_AllDefersRunEvenIfOneFails(t *testing.T) {
rsl := `
defer print("bye1")
defer print(asd)
defer print("bye2")
print("hi")
`
setupAndRunCode(t, rsl, "--color=never")
assertOutput(t, stdOutBuffer, "hi\nbye2\nbye1\n")
expected := `Error at L3:13
defer print(asd)
^^^ Undefined variable: asd
`
assertError(t, 1, expected)
}
func TestDefer_UsesNonZeroCodeFromLifodDeferredExitDespiteDeferredError(t *testing.T) {
rsl := `
defer print("bye1")
defer print(asd)
defer exit(3) // this one executed before 'asd' error, so we should use its code
defer print("bye2")
print("hi")
`
setupAndRunCode(t, rsl, "--color=never")
assertOutput(t, stdOutBuffer, "hi\nbye2\nbye1\n")
expected := `Error at L3:13
defer print(asd)
^^^ Undefined variable: asd
`
assertError(t, 3, expected)
}
func TestDefer_UsesErrorCodeLifodDeferredErrorOverLaterNonZeroExit(t *testing.T) {
rsl := `
defer print("bye1")
defer exit(3)
defer print(asd) // this error occurs before the exit above, so we use error code 1
defer print("bye2")
print("hi")
`
setupAndRunCode(t, rsl, "--color=never")
assertOutput(t, stdOutBuffer, "hi\nbye2\nbye1\n")
expected := `Error at L4:13
defer print(asd) // this error occurs before the exit above, so we use error code 1
^^^ Undefined variable: asd
`
assertError(t, 1, expected)
}
func TestDefer_IgnoresZeroCodeFromLifodDeferredExitInsteadUsesDeferredError(t *testing.T) {
rsl := `
defer print("bye1")
defer print(asd)
defer exit(0) // this is a clean exit, so we should use the error from 'asd'
defer print("bye2")
print("hi")
`
setupAndRunCode(t, rsl, "--color=never")
assertOutput(t, stdOutBuffer, "hi\nbye2\nbye1\n")
expected := `Error at L3:13
defer print(asd)
^^^ Undefined variable: asd
`
assertError(t, 1, expected)
}