A simple, small calculator placed discreetly near the Windows Taskbar or anywhere on the screen
test: cover sqrt, reciprocal, percent, negate, 000, reset, div-by-zero, overflow
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
authored by
Marco Maroni
Claude Opus 4.8 (1M context)
and committed by
Tangled
(Jul 15, 2026, 1:16 PM +0300)
e58e919f
51f1152c
+64
+64
tests/CalcTests.cpp
+64
tests/CalcTests.cpp
···
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return true;
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}
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TEST(square_root) {
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calc c; c.set_precision(2);
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wchar_t out[1024];
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feed(c, L"9Q", out); // Q = CALC_SQRT
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EXPECT_WSTR(out, L"3");
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return true;
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}
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TEST(reciprocal) {
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calc c; c.set_precision(2);
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wchar_t out[1024];
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feed(c, L"4I", out); // I = CALC_I (inverse, 1/x)
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EXPECT_WSTR(out, L"0.25");
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return true;
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}
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TEST(percent) {
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calc c; c.set_precision(2);
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wchar_t out[1024];
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feed(c, L"200*10%", out); // % = CALC_PERC
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EXPECT_WSTR(out, L"20");
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return true;
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}
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TEST(negate) {
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calc c; c.set_precision(2);
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wchar_t out[1024];
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feed(c, L"5P", out); // P = CALC_NEG
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EXPECT_WSTR(out, L"-5");
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return true;
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}
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TEST(triple_zero) {
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calc c; c.set_precision(2);
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wchar_t out[1024];
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feed(c, L"5Z", out); // Z = CALC_000
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EXPECT_WSTR(out, L"5000");
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return true;
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}
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TEST(reset) {
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calc c; c.set_precision(2);
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wchar_t out[1024];
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feed(c, L"123N", out); // N = CALC_RESET
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EXPECT_WSTR(out, L"0");
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return true;
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}
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TEST(divide_by_zero) {
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calc c; c.set_precision(2);
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wchar_t out[1024];
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feed(c, L"5/0=", out);
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EXPECT_WSTR(out, L"Error: division by zero");
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return true;
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}
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TEST(overflow) {
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calc c; c.set_precision(2);
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wchar_t out[1024];
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feed(c, L"99999999999999999999999999", out); // 26 digits > MAX_LEN_RESULT (25)
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EXPECT_WSTR(out, L"Error: overflow");
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return true;
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}
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int wmain() { return run_all(); }