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#include <Util.h>
#include "Catch2.h"
// Test that putting in an empty string returns an empty string
TEST_CASE(__FILE__"/EmptyInputString", "[]")
{
// Setup
const std::string in = "";
const std::string expected = "";
// Exercise
const std::string result = Util::ConditionalReplaceButKeepSigns(in, "findme", "putme");
// Verify
REQUIRE(result == expected);
}
// Tests that simple replacing works
TEST_CASE(__FILE__"/SimpleReplacing", "[]")
{
// Setup
const std::string in = "Hello $user, you must be $user, so i am calling you $user.";
const std::string expected = "Hello bob, you must be bob, so i am calling you bob.";
// Exercise
const std::string result = Util::ConditionalReplaceButKeepSigns(in, "$user", "bob");
// Verify
REQUIRE(result == expected);
}
// Find-string is empty
TEST_CASE(__FILE__"/FindEmpty", "[]")
{
// Setup
const std::string in = "Hello $user, you must be $user, so i am calling you $user.";
const std::string expected = in;
// Exercise
const std::string result = Util::ConditionalReplaceButKeepSigns(in, "", "bob");
// Verify
REQUIRE(result == expected);
}
// Sub-string is empty
TEST_CASE(__FILE__"/SubEmpty", "[]")
{
// Setup
const std::string in = "Hello $user, you must be $user, so i am calling you $user.";
const std::string expected = "Hello , you must be , so i am calling you .";
// Exercise
const std::string result = Util::ConditionalReplaceButKeepSigns(in, "$user", "");
// Verify
REQUIRE(result == expected);
}
// Usual use-case
TEST_CASE(__FILE__"/KeepSigns", "[]")
{
// Setup
const std::string in = "Hello Alice, lowercase alice, WTF ALICE?!";
const std::string expected = "Hello Bob, lowercase bob, WTF BOB?!";
// Exercise
const std::string result = Util::ConditionalReplaceButKeepSigns(in, "alice", "bob");
// Verify
REQUIRE(result == expected);
}
// Sub-string is longer than find-string
TEST_CASE(__FILE__"/ExtrapolateSigns", "[]")
{
// Setup
const std::string in = "Hi Alice. HI Alice. hi Alice. hI Alice. HIalice. hiALICE.";
const std::string expected = "Hello Alice. HELLO Alice. hello Alice. hELLO Alice. HElloalice. heLLOALICE.";
// Exercise
const std::string result = Util::ConditionalReplaceButKeepSigns(in, "hi", "hello");
// Verify
REQUIRE(result == expected);
}
// Tests that not replacing anything (by callback) returns the original string
TEST_CASE(__FILE__"/RejectingAllReplacementsChangesNothing", "[]")
{
// Setup
const std::string in = "Hello, i am a generic string with a lot of e's. It would be a shame of any of these e's were lost, wouldn't it?";
const std::string expected = in;
// Exercise
const std::string result = Util::ConditionalReplaceButKeepSigns(
in,
"e",
"hello",
[](auto, auto, auto){ return false; } // Reject all replacements
);
// Verify
REQUIRE(result == expected);
}
// Tests that the callback returns the correct index for a finding
TEST_CASE(__FILE__"/Callback_Index_Matches", "[]")
{
// Setup
const std::string in = "Hello, banana.";
const std::string expected = in;
// Exercise
Util::ConditionalReplaceButKeepSigns(
in,
"banana",
"hello",
[](const std::string& original, const std::string& finding, const std::size_t index) -> bool {
REQUIRE(index == 7);
return true;
}
);
}
// Tests that the callback returns the correct substring of a finding
TEST_CASE(__FILE__"/Callback_Finding_Matches", "[]")
{
// Setup
const std::string in = "Hello, BANAna.";
const std::string expected = in;
// Exercise
Util::ConditionalReplaceButKeepSigns(
in,
"banana",
"hello",
[](const std::string& original, const std::string& finding, const std::size_t index) -> bool {
REQUIRE(finding == "BANAna");
return true;
}
);
}
// Tests that the callback function works, here we will be rejecting every other finding
TEST_CASE(__FILE__"/Callback_Conditional_Rejecting_Works", "[]")
{
// Setup
const std::string in = "ding ding Ding Ding Ding Ding DING DING";
const std::string expected = "ding dong Ding Dong Ding Dong DING DONG";
std::size_t counter = 1; // Start one cycle off
std::size_t* ptrCounter = &counter;
// Exercise
const std::string result = Util::ConditionalReplaceButKeepSigns(
in,
"ding",
"dong",
[ptrCounter](const std::string& original, const std::string& finding, const std::size_t index) -> bool {
return (++*ptrCounter) % 2;
}
);
// Verify
REQUIRE(expected == result);
}
// Tests that replacing symbols works... Why ever you would use this method for this...
TEST_CASE(__FILE__"/ReplaceSymbols", "[]")
{
// Setup
const std::string in = "Hello. I like you.";
const std::string expected = "Hello! I like you!";
// Exercise
const std::string result = Util::ConditionalReplaceButKeepSigns(
in,
".",
"!"
);
// Verify
REQUIRE(result == expected);
}
// The callback ALWAYS receives the same, identical 'original string' value on each call, without any replacements made to it.
TEST_CASE(__FILE__"/Original-value_on_callback_is_correct", "[]")
{
// Setup
const std::string in = "I felt happy because I saw the others were happy and because I knew I should feel happy, but I wasn't really happy.”";
// Exercise & Verify
const std::string result = Util::ConditionalReplaceButKeepSigns(
in,
"happy",
"",
[in](const std::string& original, const std::string& finding, const std::size_t index) -> bool {
REQUIRE(original == in);
return true;
}
);
}
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