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93 lines
2.3 KiB
93 lines
2.3 KiB
cmake_policy(SET CMP0054 NEW)
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function(assert_expected_list_len list_var expected_size)
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list(LENGTH ${list_var} _size)
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if(NOT _size EQUAL ${expected_size})
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message(FATAL_ERROR "list size expected to be `${expected_size}`, got `${_size}` instead")
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endif()
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endfunction()
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# Pop from undefined list
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list(POP_FRONT test)
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if(DEFINED test)
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message(FATAL_ERROR "`test` expected to be undefined")
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endif()
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# Pop from empty list
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set(test)
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list(POP_FRONT test)
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if(DEFINED test)
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message(FATAL_ERROR "`test` expected to be undefined")
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endif()
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# Default pop from 1-item list
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list(APPEND test one)
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list(POP_FRONT test)
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assert_expected_list_len(test 0)
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# Pop from 1-item list to var
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list(APPEND test one)
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list(POP_FRONT test one)
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assert_expected_list_len(test 0)
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if(NOT DEFINED one)
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message(FATAL_ERROR "`one` expected to be defined")
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endif()
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if(NOT one STREQUAL "one")
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message(FATAL_ERROR "`one` has unexpected value `${one}`")
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endif()
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unset(one)
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unset(two)
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# Pop from 1-item list to vars
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list(APPEND test one)
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list(POP_FRONT test one two)
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assert_expected_list_len(test 0)
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if(NOT DEFINED one)
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message(FATAL_ERROR "`one` expected to be defined")
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endif()
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if(NOT one STREQUAL "one")
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message(FATAL_ERROR "`one` has unexpected value `${one}`")
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endif()
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if(DEFINED two)
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message(FATAL_ERROR "`two` expected to be undefined")
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endif()
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unset(one)
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unset(two)
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# Default pop from 2-item list
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list(APPEND test one two)
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list(POP_FRONT test)
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assert_expected_list_len(test 1)
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if(NOT test STREQUAL "two")
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message(FATAL_ERROR "`test` has unexpected value `${test}`")
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endif()
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# Pop from 2-item list
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list(PREPEND test one)
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list(POP_FRONT test one)
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assert_expected_list_len(test 1)
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if(NOT DEFINED one)
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message(FATAL_ERROR "`one` expected to be defined")
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endif()
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if(NOT one STREQUAL "one")
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message(FATAL_ERROR "`one` has unexpected value `${one}`")
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endif()
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if(NOT test STREQUAL "two")
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message(FATAL_ERROR "`test` has unexpected value `${test}`")
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endif()
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# BUG 19436
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set(myList a b c)
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list(POP_FRONT myList first second)
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if(NOT first STREQUAL "a")
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message(FATAL_ERROR "BUG#19436: `first` has unexpected value `${first}`")
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endif()
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if(NOT second STREQUAL "b")
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message(FATAL_ERROR "BUG#19436: `second` has unexpected value `${second}`")
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endif()
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if(NOT myList STREQUAL "c")
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message(FATAL_ERROR "BUG#19436: `myList` has unexpected value `${myList}`")
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endif()
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