Add the files

1 files changed, 1144 insertions, 0 deletions

diff --git a/tests/strbuf.c b/tests/strbuf.c
new file mode 100644
index 0000000..12ceac3
--- /dev/null
+++ b/tests/strbuf.c
@@ -0,0 +1,1144 @@
+#include "common/FFstrbuf.h"
+#include "common/textModifier.h"
+
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdnoreturn.h>
+
+noreturn static void testFailed(const FFstrbuf* strbuf, const char* expression, int lineNo) {
+    fputs(FASTFETCH_TEXT_MODIFIER_ERROR, stderr);
+    fprintf(stderr, "[%d] %s, strbuf:", lineNo, expression);
+    ffStrbufWriteTo(strbuf, stderr);
+    fputs(FASTFETCH_TEXT_MODIFIER_RESET, stderr);
+    fputc('\n', stderr);
+    exit(1);
+}
+
+#define VERIFY(expression) \
+    if (!(expression)) testFailed(&strbuf, #expression, __LINE__)
+
+int shouldNotBeCalled(int c) {
+    (void) c;
+    exit(1);
+}
+
+int main(void) {
+    FFstrbuf strbuf;
+
+    // destroy 0
+    ffStrbufInit(&strbuf);
+    ffStrbufDestroy(&strbuf);
+
+    // initA
+
+    ffStrbufInit(&strbuf);
+
+    VERIFY(strbuf.chars[0] == 0);
+    VERIFY(strbuf.allocated == 0);
+    VERIFY(strbuf.length == 0);
+
+    VERIFY(!ffStrbufStartsWithC(&strbuf, '0'));
+    VERIFY(!ffStrbufEndsWithC(&strbuf, '0'));
+    VERIFY(!ffStrbufStartsWithS(&strbuf, "0"));
+    VERIFY(!ffStrbufEndsWithS(&strbuf, "0"));
+    VERIFY(ffStrbufCountC(&strbuf, '0') == 0);
+
+    // Ensure following functions work with non-allocated string
+    ffStrbufAppendS(&strbuf, "");
+    ffStrbufAppendF(&strbuf, "%s", "");
+    ffStrbufAppendTransformS(&strbuf, "", shouldNotBeCalled);
+    ffStrbufPrependS(&strbuf, "");
+    ffStrbufTrim(&strbuf, ' ');
+
+    VERIFY(strbuf.chars[0] == 0);
+    VERIFY(strbuf.allocated == 0);
+    VERIFY(strbuf.length == 0);
+
+    // append(N)C
+
+    ffStrbufAppendC(&strbuf, '1');
+    VERIFY(ffStrbufEqualS(&strbuf, "1"));
+    VERIFY(strbuf.allocated >= 1);
+    ffStrbufAppendNC(&strbuf, 5, '2');
+    VERIFY(ffStrbufEqualS(&strbuf, "122222"));
+    VERIFY(strbuf.allocated >= 6);
+    ffStrbufClear(&strbuf);
+
+    // appendS
+
+    ffStrbufAppendS(&strbuf, "12345");
+    ffStrbufAppendS(&strbuf, NULL);
+
+    VERIFY(strbuf.length == 5);
+    VERIFY(strbuf.allocated >= 6);
+    VERIFY(ffStrbufEqualS(&strbuf, "12345"));
+
+    // appendNS
+
+    ffStrbufAppendNS(&strbuf, 4, "67890");
+    ffStrbufAppendNS(&strbuf, 0, NULL);
+
+    VERIFY(strbuf.length == 9);
+    VERIFY(strbuf.allocated >= 10);
+    VERIFY(ffStrbufEqualS(&strbuf, "123456789"));
+
+    // appendS long
+
+    ffStrbufAppendS(&strbuf, "1234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890");
+    VERIFY(strbuf.length == 109);
+    VERIFY(strbuf.allocated >= 110);
+    VERIFY(strbuf.chars[strbuf.length] == 0);
+
+    // substr
+
+    VERIFY(ffStrbufSubstrBefore(&strbuf, 9));
+    VERIFY(strbuf.length == 9);
+    VERIFY(strbuf.allocated >= 110);
+    VERIFY(strbuf.chars[strbuf.length] == 0);
+    VERIFY(ffStrbufEqualS(&strbuf, "123456789"));
+
+    VERIFY(!ffStrbufSubstrBeforeFirstC(&strbuf, '0'));
+    VERIFY(!ffStrbufSubstrBeforeLastC(&strbuf, '0'));
+    VERIFY(!ffStrbufSubstrAfterFirstC(&strbuf, '0'));
+    VERIFY(!ffStrbufSubstrAfterLastC(&strbuf, '0'));
+    VERIFY(ffStrbufEqualS(&strbuf, "123456789"));
+
+    VERIFY(ffStrbufSubstrBeforeFirstC(&strbuf, '9'));
+    VERIFY(ffStrbufSubstrBeforeLastC(&strbuf, '8'));
+    VERIFY(ffStrbufSubstrAfterFirstC(&strbuf, '1'));
+    VERIFY(ffStrbufSubstrAfterLastC(&strbuf, '2'));
+    VERIFY(ffStrbufEqualS(&strbuf, "34567"));
+
+    ffStrbufSetS(&strbuf, "123456789");
+
+    // startsWithC
+
+    VERIFY(ffStrbufStartsWithC(&strbuf, '1'));
+    VERIFY(!ffStrbufStartsWithC(&strbuf, '2'));
+
+    // startsWithS
+
+    VERIFY(ffStrbufStartsWithS(&strbuf, "123"));
+    VERIFY(ffStrbufStartsWithS(&strbuf, "123456789"));
+    VERIFY(!ffStrbufStartsWithS(&strbuf, "1234567890123"));
+
+    // endsWithC
+    VERIFY(ffStrbufEndsWithC(&strbuf, '9'));
+    VERIFY(!ffStrbufEndsWithC(&strbuf, '1'));
+
+    // endsWithS
+
+    VERIFY(ffStrbufEndsWithS(&strbuf, "789"));
+    VERIFY(ffStrbufEndsWithS(&strbuf, "123456789"));
+    VERIFY(!ffStrbufEndsWithS(&strbuf, "1234567890123"));
+
+    // toNumber
+
+    VERIFY(ffStrbufToDouble(&strbuf, -DBL_MAX) == 123456789.0);
+    VERIFY(ffStrbufToUInt(&strbuf, 999) == 123456789);
+
+    // countC
+
+    VERIFY(ffStrbufCountC(&strbuf, '1') == 1);
+    VERIFY(ffStrbufCountC(&strbuf, '0') == 0);
+
+    // removeS
+
+    ffStrbufRemoveS(&strbuf, "78");
+
+    VERIFY(strbuf.length == 7);
+    VERIFY(strcmp(strbuf.chars, "1234569") == 0);
+
+    // removeStrings
+
+    ffStrbufRemoveStrings(&strbuf, 3, (const char*[]) { "23", "45", "9" });
+
+    VERIFY(strbuf.length == 2);
+    VERIFY(strcmp(strbuf.chars, "16") == 0);
+
+    // PrependS
+
+    ffStrbufPrependS(&strbuf, "123");
+    ffStrbufPrependS(&strbuf, NULL);
+
+    VERIFY(strbuf.length == 5);
+    VERIFY(strcmp(strbuf.chars, "12316") == 0);
+
+    // indexC
+    VERIFY(ffStrbufFirstIndexC(&strbuf, '1') == 0);
+    VERIFY(ffStrbufNextIndexC(&strbuf, 1, '1') == 3);
+    VERIFY(ffStrbufNextIndexC(&strbuf, 4, '1') == 5);
+    VERIFY(ffStrbufLastIndexC(&strbuf, '1') == 3);
+    VERIFY(ffStrbufPreviousIndexC(&strbuf, 2, '1') == 0);
+    VERIFY(ffStrbufPreviousIndexC(&strbuf, 0, '1') == 0);
+    VERIFY(ffStrbufPreviousIndexC(&strbuf, 0, '2') == 5);
+
+    // indexS
+    VERIFY(ffStrbufFirstIndexS(&strbuf, "12316") == 0);
+    VERIFY(ffStrbufNextIndexS(&strbuf, 1, "1") == 3);
+    VERIFY(ffStrbufNextIndexS(&strbuf, 4, "1") == 5);
+
+    // ignCase
+    ffStrbufSetS(&strbuf, "AbCdEfG");
+
+    VERIFY(ffStrbufIgnCaseCompS(&strbuf, "aBcDeFg") == 0);
+    VERIFY(ffStrbufStartsWithIgnCaseS(&strbuf, "ABCD"));
+    VERIFY(ffStrbufEndsWithIgnCaseS(&strbuf, "defg"));
+    VERIFY(!ffStrbufStartsWithIgnCaseS(&strbuf, "aBcDeFgH"));
+    VERIFY(!ffStrbufEndsWithIgnCaseS(&strbuf, "0aBcDeFg"));
+
+    // ensure
+    ffStrbufEnsureEndsWithC(&strbuf, '$');
+    VERIFY(ffStrbufEqualS(&strbuf, "AbCdEfG$"));
+    ffStrbufEnsureEndsWithC(&strbuf, '$');
+    VERIFY(ffStrbufEqualS(&strbuf, "AbCdEfG$"));
+
+    // trimRight
+    ffStrbufTrimRight(&strbuf, '$');
+    VERIFY(ffStrbufEqualS(&strbuf, "AbCdEfG"));
+    ffStrbufTrimRight(&strbuf, '$');
+    VERIFY(ffStrbufEqualS(&strbuf, "AbCdEfG"));
+
+    // clear
+    ffStrbufClear(&strbuf);
+    VERIFY(strbuf.allocated > 0);
+    VERIFY(strbuf.length == 0);
+    VERIFY(strbuf.chars && strbuf.chars[0] == 0);
+
+    // Destroy
+
+    ffStrbufDestroy(&strbuf);
+
+    VERIFY(strbuf.allocated == 0);
+    VERIFY(strbuf.length == 0);
+    VERIFY(strbuf.chars && strbuf.chars[0] == 0);
+
+    // initA
+    ffStrbufInitA(&strbuf, 32);
+
+    VERIFY(strbuf.allocated == 32);
+    VERIFY(strbuf.length == 0);
+    VERIFY(strbuf.chars && strbuf.chars[0] == 0);
+
+    // appendF
+    ffStrbufAppendF(&strbuf, "%s", "1234567890123456789012345678901");
+    VERIFY(strbuf.allocated == 32);
+    VERIFY(ffStrbufEqualS(&strbuf, "1234567890123456789012345678901"));
+
+    ffStrbufDestroy(&strbuf);
+
+    // initMoveS
+    {
+        char* heapStr = strdup("1234567890");
+        ffStrbufInitMoveS(&strbuf, heapStr);
+        VERIFY(ffStrbufEqualS(&strbuf, "1234567890"));
+        VERIFY(strbuf.allocated >= 11);
+        ffStrbufDestroy(&strbuf);
+    }
+
+    // initF
+    ffStrbufInitF(&strbuf, "%s", "1234567890123456789012345678901");
+    VERIFY(strbuf.allocated >= 32);
+    VERIFY(ffStrbufEqualS(&strbuf, "1234567890123456789012345678901"));
+
+    // containC
+    VERIFY(ffStrbufContainC(&strbuf, '1'));
+    VERIFY(!ffStrbufContainC(&strbuf, '-'));
+
+    // replaceAllC
+    ffStrbufReplaceAllC(&strbuf, '1', '-');
+    VERIFY(ffStrbufEqualS(&strbuf, "-234567890-234567890-234567890-"));
+    ffStrbufReplaceAllC(&strbuf, '1', '-');
+    VERIFY(ffStrbufEqualS(&strbuf, "-234567890-234567890-234567890-"));
+
+    // trim
+    ffStrbufTrim(&strbuf, '-');
+    VERIFY(ffStrbufEqualS(&strbuf, "234567890-234567890-234567890"));
+
+    ffStrbufDestroy(&strbuf);
+
+    // ffStrbufCreateS
+    {
+        FF_STRBUF_AUTO_DESTROY testCreate = ffStrbufCreateS("TEST");
+        VERIFY(ffStrbufEqualS(&testCreate, "TEST"));
+    }
+
+    // ffStrbufCreateStatic
+    ffStrbufInitStatic(&strbuf, "TEST");
+    VERIFY(ffStrbufEqualS(&strbuf, "TEST"));
+    VERIFY(strbuf.length == 4);
+    VERIFY(strbuf.allocated == 0);
+
+    ffStrbufDestroy(&strbuf);
+    VERIFY(strbuf.length == 0);
+    VERIFY(strbuf.allocated == 0);
+
+    // ffStrbufCreateStatic / Allocate
+    ffStrbufInitStatic(&strbuf, "TEST");
+    ffStrbufEnsureFree(&strbuf, 0);
+    VERIFY(ffStrbufEqualS(&strbuf, "TEST"));
+    VERIFY(strbuf.length == 4);
+    VERIFY(strbuf.allocated > 0);
+
+    // ffStrbufCreateStatic / Append
+    ffStrbufInitStatic(&strbuf, "TEST");
+    ffStrbufAppendS(&strbuf, "_TEST");
+    VERIFY(ffStrbufEqualS(&strbuf, "TEST_TEST"));
+    VERIFY(strbuf.length == 9);
+    VERIFY(strbuf.allocated >= 10);
+    ffStrbufAppendC(&strbuf, '_');
+    VERIFY(ffStrbufEqualS(&strbuf, "TEST_TEST_"));
+    ffStrbufDestroy(&strbuf);
+    VERIFY(strbuf.length == 0);
+    VERIFY(strbuf.allocated == 0);
+
+    // ffStrbufCreateStatic / Prepend
+    ffStrbufInitStatic(&strbuf, "TEST");
+    ffStrbufPrependS(&strbuf, "TEST_");
+    VERIFY(ffStrbufEqualS(&strbuf, "TEST_TEST"));
+    VERIFY(strbuf.length == 9);
+    VERIFY(strbuf.allocated >= 10);
+    ffStrbufPrependC(&strbuf, '_');
+    VERIFY(ffStrbufEqualS(&strbuf, "_TEST_TEST"));
+    ffStrbufDestroy(&strbuf);
+    VERIFY(strbuf.length == 0);
+    VERIFY(strbuf.allocated == 0);
+
+    // ffStrbufCreateStatic / Clear
+    ffStrbufInitStatic(&strbuf, "TEST");
+    ffStrbufClear(&strbuf);
+    VERIFY(strbuf.length == 0);
+    VERIFY(strbuf.allocated == 0);
+    ffStrbufDestroy(&strbuf);
+
+    // ffStrbufCreateStatic / Set
+    ffStrbufInitStatic(&strbuf, "TEST"); // static
+    ffStrbufSetStatic(&strbuf, "test");
+    VERIFY(ffStrbufEqualS(&strbuf, "test"));
+    VERIFY(strbuf.length == 4);
+    VERIFY(strbuf.allocated == 0);
+    ffStrbufDestroy(&strbuf);
+
+    // ffStrbufCreateStatic / Set
+    ffStrbufInitS(&strbuf, "TEST"); // allocated
+    ffStrbufSetStatic(&strbuf, "test");
+    VERIFY(ffStrbufEqualS(&strbuf, "test"));
+    VERIFY(strbuf.length == 4);
+    VERIFY(strbuf.allocated == 0);
+    ffStrbufDestroy(&strbuf);
+
+    // ffStrbufCreateStatic / TrimL
+    ffStrbufInitStatic(&strbuf, "_TEST_");
+    ffStrbufTrimLeft(&strbuf, '_');
+    VERIFY(ffStrbufEqualS(&strbuf, "TEST_"));
+    VERIFY(strbuf.length == 5);
+    VERIFY(strbuf.allocated == 0);
+    ffStrbufDestroy(&strbuf);
+
+    // ffStrbufCreateStatic / TrimR
+    ffStrbufInitStatic(&strbuf, "_TEST_");
+    ffStrbufTrimRight(&strbuf, ' ');
+    VERIFY(strbuf.allocated == 0);
+    VERIFY(ffStrbufEqualS(&strbuf, "_TEST_"));
+    ffStrbufTrimRight(&strbuf, '_');
+    VERIFY(ffStrbufEqualS(&strbuf, "_TEST"));
+    VERIFY(strbuf.length == 5);
+    VERIFY(strbuf.allocated > 0);
+    ffStrbufDestroy(&strbuf);
+
+    // ffStrbufCreateStatic / Substr
+    ffStrbufInitStatic(&strbuf, "__TEST__");
+    VERIFY(ffStrbufRemoveSubstr(&strbuf, 0, 6));
+    VERIFY(ffStrbufEqualS(&strbuf, "__"));
+    VERIFY(strbuf.length == 2);
+    VERIFY(strbuf.allocated > 0);
+    ffStrbufDestroy(&strbuf);
+
+    // ffStrbufCreateStatic / Substr
+    ffStrbufInitStatic(&strbuf, "__TEST__");
+    VERIFY(ffStrbufRemoveSubstr(&strbuf, 2, 8));
+    VERIFY(ffStrbufEqualS(&strbuf, "__"));
+    VERIFY(strbuf.length == 2);
+    VERIFY(strbuf.allocated > 0);
+    ffStrbufDestroy(&strbuf);
+
+    // ffStrbufCreateStatic / Substr
+    ffStrbufInitStatic(&strbuf, "__TEST__");
+    VERIFY(ffStrbufRemoveSubstr(&strbuf, 2, 6));
+    VERIFY(ffStrbufEqualS(&strbuf, "____"));
+    VERIFY(strbuf.length == 4);
+    VERIFY(strbuf.allocated > 0);
+    ffStrbufDestroy(&strbuf);
+
+    // ffStrbufCreateStatic / ReplaceAllC
+    ffStrbufInitStatic(&strbuf, "__TEST__");
+    ffStrbufReplaceAllC(&strbuf, '_', '-');
+    VERIFY(ffStrbufEqualS(&strbuf, "--TEST--"));
+    VERIFY(strbuf.length == 8);
+    VERIFY(strbuf.allocated > 0);
+    ffStrbufDestroy(&strbuf);
+
+    // ffStrbufCreateStatic / TrimSpace
+    ffStrbufInitStatic(&strbuf, "\n TEST\n ");
+    ffStrbufTrimSpace(&strbuf);
+    VERIFY(strbuf.length == 4);
+    VERIFY(strbuf.allocated > 0);
+    VERIFY(ffStrbufEqualS(&strbuf, "TEST"));
+    ffStrbufDestroy(&strbuf);
+
+    // ffStrbufCreate / TrimSpace
+    ffStrbufInitS(&strbuf, "\n TEST\n ");
+    ffStrbufTrimSpace(&strbuf);
+    VERIFY(strbuf.length == 4);
+    VERIFY(strbuf.allocated > 0);
+    VERIFY(ffStrbufEqualS(&strbuf, "TEST"));
+    ffStrbufDestroy(&strbuf);
+
+    // ffStrbufEnsureFixedLengthFree / empty buffer
+    ffStrbufInit(&strbuf);
+    ffStrbufEnsureFixedLengthFree(&strbuf, 10);
+    VERIFY(strbuf.length == 0);
+    VERIFY(strbuf.allocated == 11);
+    ffStrbufDestroy(&strbuf);
+    ffStrbufInitA(&strbuf, 10);
+    ffStrbufEnsureFixedLengthFree(&strbuf, 10);
+    VERIFY(strbuf.length == 0);
+    VERIFY(strbuf.allocated == 11);
+    ffStrbufEnsureFixedLengthFree(&strbuf, 12);
+    VERIFY(strbuf.length == 0);
+    VERIFY(strbuf.allocated == 13);
+    ffStrbufDestroy(&strbuf);
+
+    // ffStrbufEnsureFixedLengthFree / empty buffer with zero free length
+    ffStrbufInit(&strbuf);
+    ffStrbufEnsureFixedLengthFree(&strbuf, 0);
+    VERIFY(strbuf.length == 0);
+    VERIFY(strbuf.allocated == 0);
+    ffStrbufDestroy(&strbuf);
+
+    // ffStrbufEnsureFixedLengthFree / empty buffer but oldFree >= newFree
+    ffStrbufInitA(&strbuf, 11);
+    ffStrbufEnsureFixedLengthFree(&strbuf, 10);
+    VERIFY(strbuf.length == 0);
+    VERIFY(strbuf.allocated == 11);
+    ffStrbufDestroy(&strbuf);
+    ffStrbufInitA(&strbuf, 12);
+    ffStrbufEnsureFixedLengthFree(&strbuf, 10);
+    VERIFY(strbuf.length == 0);
+    VERIFY(strbuf.allocated == 12);
+    ffStrbufDestroy(&strbuf);
+
+    // ffStrbufEnsureFixedLengthFree / non empty buffer
+    ffStrbufAppendF(&strbuf, "%s", "1234567890");
+    VERIFY(strbuf.length == 10);
+    VERIFY(strbuf.allocated == 32);
+    ffStrbufEnsureFixedLengthFree(&strbuf, 0);
+    VERIFY(strbuf.length == 10);
+    VERIFY(strbuf.allocated == 32);
+    ffStrbufEnsureFixedLengthFree(&strbuf, 20); // less than oldFree (=21)
+    VERIFY(strbuf.length == 10);
+    VERIFY(strbuf.allocated == 32);
+    ffStrbufEnsureFixedLengthFree(&strbuf, 21); // equal to oldFree (=21)
+    VERIFY(strbuf.length == 10);
+    VERIFY(strbuf.allocated == 32);
+    ffStrbufEnsureFixedLengthFree(&strbuf, 22); // greater than oldFree (=21)
+    VERIFY(strbuf.length == 10);
+    VERIFY(strbuf.allocated == 33);
+    ffStrbufDestroy(&strbuf);
+
+    // ffStrbufEnsureFixedLengthFree / static buffer
+    ffStrbufInitStatic(&strbuf, "__TEST__");
+    VERIFY(strbuf.length > 0);
+    VERIFY(strbuf.allocated == 0);
+    ffStrbufEnsureFixedLengthFree(&strbuf, 10);
+    VERIFY(strbuf.length == strlen("__TEST__"));
+    VERIFY(strbuf.allocated == strlen("__TEST__") + 1 + 10);
+    VERIFY(ffStrbufEqualS(&strbuf, "__TEST__"));
+    ffStrbufDestroy(&strbuf);
+
+    // ffStrbufInsertNC
+    ffStrbufInitStatic(&strbuf, "123456");
+    ffStrbufInsertNC(&strbuf, 0, 2, 'A');
+    VERIFY(ffStrbufEqualS(&strbuf, "AA123456"));
+    ffStrbufInsertNC(&strbuf, 4, 2, 'B');
+    VERIFY(ffStrbufEqualS(&strbuf, "AA12BB3456"));
+    ffStrbufInsertNC(&strbuf, strbuf.length, 2, 'C');
+    VERIFY(ffStrbufEqualS(&strbuf, "AA12BB3456CC"));
+    ffStrbufInsertNC(&strbuf, 999, 2, 'D');
+    VERIFY(ffStrbufEqualS(&strbuf, "AA12BB3456CCDD"));
+    ffStrbufDestroy(&strbuf);
+
+    // smallest allocation test
+    {
+        FF_STRBUF_AUTO_DESTROY strbuf1 = ffStrbufCreateA(10);
+        VERIFY(strbuf1.allocated == 10);
+        ffStrbufEnsureFree(&strbuf1, 16);
+        VERIFY(strbuf1.allocated == 32);
+
+        FF_STRBUF_AUTO_DESTROY strbuf2 = ffStrbufCreate();
+        VERIFY(strbuf2.allocated == 0);
+        ffStrbufEnsureFree(&strbuf2, 16);
+        VERIFY(strbuf2.allocated == 32);
+    }
+
+    {
+        int i = 0;
+        char* lineptr = NULL;
+        size_t n = 0;
+        const char* text = "Processor\t: ARMv7\nprocessor\t: 0\nBogoMIPS\t: 38.00\n\nprocessor\t: 1\nBogoMIPS\t: 38.00";
+        ffStrbufSetS(&strbuf, text);
+
+        while (ffStrbufGetline(&lineptr, &n, &strbuf)) {
+            ++i;
+            switch (i) {
+                case 1:
+                    VERIFY(strcmp(lineptr, "Processor\t: ARMv7") == 0);
+                    VERIFY(n == strlen("Processor\t: ARMv7"));
+                    break;
+                case 2:
+                    VERIFY(strcmp(lineptr, "processor\t: 0") == 0);
+                    VERIFY(n == strlen("processor\t: 0"));
+                    break;
+                case 3:
+                    VERIFY(strcmp(lineptr, "BogoMIPS\t: 38.00") == 0);
+                    VERIFY(n == strlen("BogoMIPS\t: 38.00"));
+                    break;
+                case 4:
+                    VERIFY(strcmp(lineptr, "") == 0);
+                    VERIFY(n == 0);
+                    break;
+                case 5:
+                    VERIFY(strcmp(lineptr, "processor\t: 1") == 0);
+                    VERIFY(n == strlen("processor\t: 1"));
+                    break;
+                case 6:
+                    VERIFY(strcmp(lineptr, "BogoMIPS\t: 38.00") == 0);
+                    VERIFY(n == strlen("BogoMIPS\t: 38.00"));
+                    break;
+                default:
+                    VERIFY(false);
+                    break;
+            }
+        }
+        VERIFY(ffStrbufEqualS(&strbuf, text));
+        VERIFY(*lineptr == '\0');
+        VERIFY(i == 6);
+
+        lineptr = NULL;
+        n = 0;
+        i = 0;
+        text = "\n";
+        ffStrbufSetS(&strbuf, text);
+        while (ffStrbufGetline(&lineptr, &n, &strbuf)) {
+            ++i;
+            switch (i) {
+                case 1:
+                    VERIFY(strcmp(lineptr, "") == 0);
+                    VERIFY(n == 0);
+                    break;
+                default:
+                    VERIFY(false);
+                    break;
+            }
+        }
+        VERIFY(ffStrbufEqualS(&strbuf, text));
+        VERIFY(*lineptr == '\0');
+        VERIFY(i == 1);
+
+        lineptr = NULL;
+        n = 0;
+        i = 0;
+        text = "abcd";
+        ffStrbufSetS(&strbuf, text);
+        while (ffStrbufGetline(&lineptr, &n, &strbuf)) {
+            ++i;
+            switch (i) {
+                case 1:
+                    VERIFY(strcmp(lineptr, "abcd") == 0);
+                    VERIFY(n == strlen("abcd"));
+                    break;
+                default:
+                    VERIFY(false);
+                    break;
+            }
+        }
+        VERIFY(ffStrbufEqualS(&strbuf, text));
+        VERIFY(*lineptr == '\0');
+        VERIFY(i == 1);
+
+        lineptr = NULL;
+        n = 0;
+        i = 0;
+        text = "";
+        ffStrbufSetS(&strbuf, text);
+        while (ffStrbufGetline(&lineptr, &n, &strbuf)) {
+            ++i;
+            VERIFY(false);
+        }
+
+        VERIFY(ffStrbufEqualS(&strbuf, text));
+        VERIFY(*lineptr == '\0');
+        VERIFY(i == 0);
+    }
+
+    ffStrbufSetS(&strbuf, "Hello World");
+    VERIFY(ffStrbufRemoveDupWhitespaces(&strbuf) == false);
+    VERIFY(strcmp(strbuf.chars, "Hello World") == 0);
+
+    ffStrbufSetS(&strbuf, "Hello   World");
+    VERIFY(ffStrbufRemoveDupWhitespaces(&strbuf) == true);
+    VERIFY(strcmp(strbuf.chars, "Hello World") == 0);
+
+    ffStrbufSetS(&strbuf, "   Hello World   ");
+    VERIFY(ffStrbufRemoveDupWhitespaces(&strbuf) == true);
+    VERIFY(strcmp(strbuf.chars, " Hello World ") == 0);
+
+    ffStrbufSetS(&strbuf, "   Hello   World   ");
+    VERIFY(ffStrbufRemoveDupWhitespaces(&strbuf) == true);
+    VERIFY(strcmp(strbuf.chars, " Hello World ") == 0);
+
+    ffStrbufSetS(&strbuf, "   ");
+    VERIFY(ffStrbufRemoveDupWhitespaces(&strbuf) == true);
+    VERIFY(strcmp(strbuf.chars, " ") == 0);
+
+    ffStrbufClear(&strbuf);
+    VERIFY(ffStrbufRemoveDupWhitespaces(&strbuf) == false);
+    VERIFY(strcmp(strbuf.chars, "") == 0);
+
+    ffStrbufSetStatic(&strbuf, "   ");
+    VERIFY(ffStrbufRemoveDupWhitespaces(&strbuf) == false);
+    VERIFY(strcmp(strbuf.chars, "   ") == 0);
+
+    {
+        ffStrbufSetStatic(&strbuf, "abcdef");
+        FF_STRBUF_AUTO_DESTROY newStr = ffStrbufCreateCopy(&strbuf);
+        VERIFY(newStr.allocated == 0);
+        VERIFY(newStr.chars == strbuf.chars);
+    }
+
+    {
+        ffStrbufSetStatic(&strbuf, "abcdef");
+        FF_STRBUF_AUTO_DESTROY newStr = ffStrbufCreateS("123456");
+        ffStrbufSet(&newStr, &strbuf);
+        VERIFY(newStr.allocated == 0);
+        VERIFY(newStr.chars == strbuf.chars);
+        VERIFY(ffStrbufEqualS(&newStr, "abcdef"));
+    }
+
+    {
+        ffStrbufClear(&strbuf);
+        FF_STRBUF_AUTO_DESTROY newStr = ffStrbufCreateS("123456");
+        uint32_t oldAlloc = newStr.allocated;
+        VERIFY(oldAlloc > newStr.length);
+        ffStrbufSet(&newStr, &strbuf);
+        VERIFY(newStr.allocated == oldAlloc);
+        VERIFY(newStr.chars != strbuf.chars);
+        VERIFY(ffStrbufEqualS(&newStr, ""));
+    }
+
+    {
+        ffStrbufSetStatic(&strbuf, "abcdefghijkl");
+        FF_STRBUF_AUTO_DESTROY newStr = ffStrbufCreateS("123456");
+        ffStrbufSet(&newStr, &strbuf);
+        VERIFY(newStr.allocated == 0);
+        VERIFY(newStr.chars == strbuf.chars);
+        VERIFY(ffStrbufEqualS(&newStr, "abcdefghijkl"));
+    }
+
+    {
+        ffStrbufClear(&strbuf);
+        FF_STRBUF_AUTO_DESTROY newStr = ffStrbufCreateCopy(&strbuf);
+        VERIFY(newStr.allocated == 0);
+        VERIFY(newStr.chars == strbuf.chars);
+        VERIFY(newStr.chars[0] == '\0');
+    }
+
+    {
+        ffStrbufClear(&strbuf);
+        FF_STRBUF_AUTO_DESTROY newStr = ffStrbufCreateS("123456");
+        ffStrbufSet(&newStr, &strbuf);
+        VERIFY(newStr.allocated > 0);
+        VERIFY(newStr.chars != strbuf.chars);
+        VERIFY(ffStrbufEqualS(&newStr, ""));
+    }
+
+    {
+        ffStrbufSetStatic(&strbuf, "abc");
+        VERIFY(ffStrbufMatchSeparatedS(&strbuf, "abc:def:ghi", ' ') == false);
+        VERIFY(ffStrbufMatchSeparatedS(&strbuf, "abc:def:ghi", ':') == true);
+        VERIFY(ffStrbufMatchSeparatedS(&strbuf, "def:ghi", ' ') == false);
+        VERIFY(ffStrbufMatchSeparatedS(&strbuf, "def:ghi", ':') == false);
+        VERIFY(ffStrbufMatchSeparatedS(&strbuf, "def", ':') == false);
+        VERIFY(ffStrbufMatchSeparatedS(&strbuf, "abc", ':') == true);
+        VERIFY(ffStrbufMatchSeparatedS(&strbuf, "", ' ') == false);
+        VERIFY(ffStrbufMatchSeparatedS(&strbuf, ":abc:", ':') == true);
+        VERIFY(ffStrbufMatchSeparatedS(&strbuf, "abc:", ':') == true);
+        VERIFY(ffStrbufMatchSeparatedS(&strbuf, ":abc", ':') == true);
+        VERIFY(ffStrbufMatchSeparatedS(&strbuf, ":ABC", ':') == false);
+        VERIFY(ffStrbufMatchSeparatedS(&strbuf, ":abcdef", ':') == false);
+    }
+
+    {
+        ffStrbufSetStatic(&strbuf, "ABC");
+        VERIFY(ffStrbufMatchSeparatedIgnCaseS(&strbuf, "abc:def:ghi", ' ') == false);
+        VERIFY(ffStrbufMatchSeparatedIgnCaseS(&strbuf, "abc:def:ghi", ':') == true);
+        VERIFY(ffStrbufMatchSeparatedIgnCaseS(&strbuf, "def:ghi", ' ') == false);
+        VERIFY(ffStrbufMatchSeparatedIgnCaseS(&strbuf, "def:ghi", ':') == false);
+        VERIFY(ffStrbufMatchSeparatedIgnCaseS(&strbuf, "def", ':') == false);
+        VERIFY(ffStrbufMatchSeparatedIgnCaseS(&strbuf, "abc", ':') == true);
+        VERIFY(ffStrbufMatchSeparatedIgnCaseS(&strbuf, "", ' ') == false);
+        VERIFY(ffStrbufMatchSeparatedIgnCaseS(&strbuf, ":abc:", ':') == true);
+        VERIFY(ffStrbufMatchSeparatedIgnCaseS(&strbuf, "abc:", ':') == true);
+        VERIFY(ffStrbufMatchSeparatedIgnCaseS(&strbuf, ":abc", ':') == true);
+        VERIFY(ffStrbufMatchSeparatedIgnCaseS(&strbuf, ":ABC", ':') == true);
+        VERIFY(ffStrbufMatchSeparatedIgnCaseS(&strbuf, ":abcdef", ':') == false);
+    }
+
+    {
+        ffStrbufSetStatic(&strbuf, "abc:def:ghi");
+        VERIFY(ffStrbufSeparatedContainS(&strbuf, "abc", ' ') == false);
+        VERIFY(ffStrbufSeparatedContainS(&strbuf, "abc", ':') == true);
+        VERIFY(ffStrbufSeparatedContainS(&strbuf, "def", ' ') == false);
+        VERIFY(ffStrbufSeparatedContainS(&strbuf, "def", ':') == true);
+        VERIFY(ffStrbufSeparatedContainS(&strbuf, "DEF", ':') == false);
+        VERIFY(ffStrbufSeparatedContainS(&strbuf, "a", ':') == false);
+        VERIFY(ffStrbufSeparatedContainS(&strbuf, "e", ':') == false);
+        VERIFY(ffStrbufSeparatedContainS(&strbuf, "i", ':') == false);
+    }
+
+    {
+        ffStrbufSetStatic(&strbuf, "ABC:DEF:GHI");
+        VERIFY(ffStrbufSeparatedContainIgnCaseS(&strbuf, "abc", ' ') == false);
+        VERIFY(ffStrbufSeparatedContainIgnCaseS(&strbuf, "abc", ':') == true);
+        VERIFY(ffStrbufSeparatedContainIgnCaseS(&strbuf, "def", ' ') == false);
+        VERIFY(ffStrbufSeparatedContainIgnCaseS(&strbuf, "def", ':') == true);
+        VERIFY(ffStrbufSeparatedContainIgnCaseS(&strbuf, "DEF", ':') == true);
+        VERIFY(ffStrbufSeparatedContainIgnCaseS(&strbuf, "a", ':') == false);
+        VERIFY(ffStrbufSeparatedContainIgnCaseS(&strbuf, "e", ':') == false);
+        VERIFY(ffStrbufSeparatedContainIgnCaseS(&strbuf, "i", ':') == false);
+    }
+
+    {
+        ffStrbufSetStatic(&strbuf, "abc");
+        ffStrbufSubstr(&strbuf, 0, 1); // start, end
+        VERIFY(ffStrbufEqualS(&strbuf, "a"));
+
+        ffStrbufSetStatic(&strbuf, "abc");
+        ffStrbufSubstr(&strbuf, 1, 1);
+        VERIFY(ffStrbufEqualS(&strbuf, ""));
+
+        ffStrbufSetStatic(&strbuf, "abc");
+        ffStrbufSubstr(&strbuf, 2, 1);
+        VERIFY(ffStrbufEqualS(&strbuf, ""));
+
+        ffStrbufSetStatic(&strbuf, "abc");
+        ffStrbufSubstr(&strbuf, 2, 3);
+        VERIFY(ffStrbufEqualS(&strbuf, "c"));
+
+        ffStrbufSetStatic(&strbuf, "abc");
+        ffStrbufSubstr(&strbuf, 0, 3);
+        VERIFY(ffStrbufEqualS(&strbuf, "abc"));
+    }
+
+    {
+        ffStrbufSetS(&strbuf, "abc");
+        ffStrbufSubstr(&strbuf, 0, 1); // start, end
+        VERIFY(ffStrbufEqualS(&strbuf, "a"));
+
+        ffStrbufSetS(&strbuf, "abc");
+        ffStrbufSubstr(&strbuf, 1, 1);
+        VERIFY(ffStrbufEqualS(&strbuf, ""));
+
+        ffStrbufSetS(&strbuf, "abc");
+        ffStrbufSubstr(&strbuf, 2, 1);
+        VERIFY(ffStrbufEqualS(&strbuf, ""));
+
+        ffStrbufSetS(&strbuf, "abc");
+        ffStrbufSubstr(&strbuf, 2, 3);
+        VERIFY(ffStrbufEqualS(&strbuf, "c"));
+
+        ffStrbufSetS(&strbuf, "abc");
+        ffStrbufSubstr(&strbuf, 0, 3);
+        VERIFY(ffStrbufEqualS(&strbuf, "abc"));
+
+        ffStrbufDestroy(&strbuf);
+    }
+
+    {
+        ffStrbufAppendUtf32CodePoint(&strbuf, 0x6587);
+        ffStrbufAppendUtf32CodePoint(&strbuf, 0x6cc9);
+        ffStrbufAppendUtf32CodePoint(&strbuf, 0x9a7f);
+        VERIFY(ffStrbufEqualS(&strbuf, u8"文泉驿"));
+
+        ffStrbufDestroy(&strbuf);
+    }
+
+    {
+        ffStrbufAppendSInt(&strbuf, 1234567890);
+        VERIFY(ffStrbufEqualS(&strbuf, "1234567890"));
+
+        ffStrbufClear(&strbuf);
+        ffStrbufAppendSInt(&strbuf, -1234567890);
+        VERIFY(ffStrbufEqualS(&strbuf, "-1234567890"));
+
+        ffStrbufClear(&strbuf);
+        ffStrbufAppendSInt(&strbuf, 0);
+        VERIFY(ffStrbufEqualS(&strbuf, "0"));
+
+        ffStrbufClear(&strbuf);
+        ffStrbufAppendUInt(&strbuf, 1234567890);
+        VERIFY(ffStrbufEqualS(&strbuf, "1234567890"));
+
+        ffStrbufClear(&strbuf);
+        ffStrbufAppendUInt(&strbuf, 0);
+        VERIFY(ffStrbufEqualS(&strbuf, "0"));
+
+        ffStrbufDestroy(&strbuf);
+    }
+
+    {
+        ffStrbufAppendDouble(&strbuf, 120.0, 0, true);
+        VERIFY(ffStrbufEqualS(&strbuf, "120"));
+
+        ffStrbufClear(&strbuf);
+        ffStrbufAppendDouble(&strbuf, 120.0, 1, true);
+        VERIFY(ffStrbufEqualS(&strbuf, "120.0"));
+
+        ffStrbufClear(&strbuf);
+        ffStrbufAppendDouble(&strbuf, 120.0, 5, true);
+        VERIFY(ffStrbufEqualS(&strbuf, "120.00000"));
+
+        ffStrbufClear(&strbuf);
+        ffStrbufAppendDouble(&strbuf, 120.123456789, 5, true);
+        VERIFY(ffStrbufEqualS(&strbuf, "120.12346"));
+
+        ffStrbufClear(&strbuf);
+        ffStrbufAppendDouble(&strbuf, 120.888888, 0, true);
+        VERIFY(ffStrbufEqualS(&strbuf, "121"));
+
+        ffStrbufClear(&strbuf);
+        ffStrbufAppendDouble(&strbuf, 120.999999, 2, true);
+        VERIFY(ffStrbufEqualS(&strbuf, "121.00"));
+
+        ffStrbufClear(&strbuf);
+        ffStrbufAppendDouble(&strbuf, 120.123456789, 0, true);
+        VERIFY(ffStrbufEqualS(&strbuf, "120"));
+
+        ffStrbufClear(&strbuf);
+        ffStrbufAppendDouble(&strbuf, 120.123456789, -1, true);
+        VERIFY(ffStrbufEqualS(&strbuf, "120.123456789"));
+
+        ffStrbufClear(&strbuf);
+        ffStrbufAppendDouble(&strbuf, 120.123, 5, true);
+        VERIFY(ffStrbufEqualS(&strbuf, "120.12300"));
+
+        ffStrbufClear(&strbuf);
+        ffStrbufAppendDouble(&strbuf, -120.0, 0, true);
+        VERIFY(ffStrbufEqualS(&strbuf, "-120"));
+
+        ffStrbufClear(&strbuf);
+        ffStrbufAppendDouble(&strbuf, -120.0, 1, true);
+        VERIFY(ffStrbufEqualS(&strbuf, "-120.0"));
+
+        ffStrbufClear(&strbuf);
+        ffStrbufAppendDouble(&strbuf, -120.0, 5, true);
+        VERIFY(ffStrbufEqualS(&strbuf, "-120.00000"));
+
+        ffStrbufClear(&strbuf);
+        ffStrbufAppendDouble(&strbuf, -120.123456789, 5, true);
+        VERIFY(ffStrbufEqualS(&strbuf, "-120.12346"));
+
+        ffStrbufClear(&strbuf);
+        ffStrbufAppendDouble(&strbuf, -120.123456789, 0, true);
+        VERIFY(ffStrbufEqualS(&strbuf, "-120"));
+
+        ffStrbufClear(&strbuf);
+        ffStrbufAppendDouble(&strbuf, -120.123456789, -1, true);
+        VERIFY(ffStrbufEqualS(&strbuf, "-120.123456789"));
+
+        ffStrbufClear(&strbuf);
+        ffStrbufAppendDouble(&strbuf, -120.123, 5, true);
+        VERIFY(ffStrbufEqualS(&strbuf, "-120.12300"));
+
+        ffStrbufClear(&strbuf);
+        ffStrbufAppendDouble(&strbuf, -120.888888, 0, true);
+        VERIFY(ffStrbufEqualS(&strbuf, "-121"));
+
+        ffStrbufClear(&strbuf);
+        ffStrbufAppendDouble(&strbuf, -120.999999, 2, true);
+        VERIFY(ffStrbufEqualS(&strbuf, "-121.00"));
+
+        ffStrbufClear(&strbuf);
+        ffStrbufAppendDouble(&strbuf, 1.2345e50, 1, true);
+        VERIFY(ffStrbufEqualS(&strbuf, "1.2345e50"));
+
+        ffStrbufClear(&strbuf);
+        ffStrbufAppendDouble(&strbuf, -1.2345e50, 1, true);
+        VERIFY(ffStrbufEqualS(&strbuf, "-1.2345e50"));
+
+        ffStrbufClear(&strbuf);
+        ffStrbufAppendDouble(&strbuf, 1.2345e50, 0, true);
+        VERIFY(ffStrbufEqualS(&strbuf, "1.2345e50"));
+
+        ffStrbufClear(&strbuf);
+        ffStrbufAppendDouble(&strbuf, -1.2345e50, 0, true);
+        VERIFY(ffStrbufEqualS(&strbuf, "-1.2345e50"));
+
+        ffStrbufClear(&strbuf);
+        ffStrbufAppendDouble(&strbuf, 1.2345e50, -1, true);
+        VERIFY(ffStrbufEqualS(&strbuf, "1.2345e50"));
+
+        ffStrbufClear(&strbuf);
+        ffStrbufAppendDouble(&strbuf, -1.2345e50, -1, true);
+        VERIFY(ffStrbufEqualS(&strbuf, "-1.2345e50"));
+
+        ffStrbufClear(&strbuf);
+        ffStrbufAppendDouble(&strbuf, 1.2345e20, 1, true);
+        VERIFY(ffStrbufEqualS(&strbuf, "123450000000000000000.0"));
+
+        ffStrbufClear(&strbuf);
+        ffStrbufAppendDouble(&strbuf, -1.2345e20, 1, true);
+        VERIFY(ffStrbufEqualS(&strbuf, "-123450000000000000000.0"));
+
+        ffStrbufClear(&strbuf);
+        ffStrbufAppendDouble(&strbuf, +0.0, 0, true);
+        VERIFY(ffStrbufEqualS(&strbuf, "0"));
+
+        ffStrbufClear(&strbuf);
+        ffStrbufAppendDouble(&strbuf, -0.0, 0, true);
+        VERIFY(ffStrbufEqualS(&strbuf, "-0"));
+
+        ffStrbufDestroy(&strbuf);
+    }
+
+    {
+        ffStrbufAppendDouble(&strbuf, 120.0, 0, false);
+        VERIFY(ffStrbufEqualS(&strbuf, "120"));
+
+        ffStrbufClear(&strbuf);
+        ffStrbufAppendDouble(&strbuf, 120.0, 1, false);
+        VERIFY(ffStrbufEqualS(&strbuf, "120"));
+
+        ffStrbufClear(&strbuf);
+        ffStrbufAppendDouble(&strbuf, 120.0, 5, false);
+        VERIFY(ffStrbufEqualS(&strbuf, "120"));
+
+        ffStrbufClear(&strbuf);
+        ffStrbufAppendDouble(&strbuf, 120.123456789, 5, false);
+        VERIFY(ffStrbufEqualS(&strbuf, "120.12346"));
+
+        ffStrbufClear(&strbuf);
+        ffStrbufAppendDouble(&strbuf, 120.888888, 0, false);
+        VERIFY(ffStrbufEqualS(&strbuf, "121"));
+
+        ffStrbufClear(&strbuf);
+        ffStrbufAppendDouble(&strbuf, 120.999999, 2, false);
+        VERIFY(ffStrbufEqualS(&strbuf, "121"));
+
+        ffStrbufClear(&strbuf);
+        ffStrbufAppendDouble(&strbuf, 120.123456789, 0, false);
+        VERIFY(ffStrbufEqualS(&strbuf, "120"));
+
+        ffStrbufClear(&strbuf);
+        ffStrbufAppendDouble(&strbuf, 120.123456789, -1, false);
+        VERIFY(ffStrbufEqualS(&strbuf, "120.123456789"));
+
+        ffStrbufClear(&strbuf);
+        ffStrbufAppendDouble(&strbuf, 120.123, 5, false);
+        VERIFY(ffStrbufEqualS(&strbuf, "120.123"));
+
+        ffStrbufClear(&strbuf);
+        ffStrbufAppendDouble(&strbuf, -120.0, 0, false);
+        VERIFY(ffStrbufEqualS(&strbuf, "-120"));
+
+        ffStrbufClear(&strbuf);
+        ffStrbufAppendDouble(&strbuf, -120.0, 1, false);
+        VERIFY(ffStrbufEqualS(&strbuf, "-120"));
+
+        ffStrbufClear(&strbuf);
+        ffStrbufAppendDouble(&strbuf, -120.0, 5, false);
+        VERIFY(ffStrbufEqualS(&strbuf, "-120"));
+
+        ffStrbufClear(&strbuf);
+        ffStrbufAppendDouble(&strbuf, -120.123456789, 5, false);
+        VERIFY(ffStrbufEqualS(&strbuf, "-120.12346"));
+
+        ffStrbufClear(&strbuf);
+        ffStrbufAppendDouble(&strbuf, -120.123456789, 0, false);
+        VERIFY(ffStrbufEqualS(&strbuf, "-120"));
+
+        ffStrbufClear(&strbuf);
+        ffStrbufAppendDouble(&strbuf, -120.123456789, -1, false);
+        VERIFY(ffStrbufEqualS(&strbuf, "-120.123456789"));
+
+        ffStrbufClear(&strbuf);
+        ffStrbufAppendDouble(&strbuf, -120.123, 5, false);
+        VERIFY(ffStrbufEqualS(&strbuf, "-120.123"));
+
+        ffStrbufClear(&strbuf);
+        ffStrbufAppendDouble(&strbuf, -120.888888, 0, false);
+        VERIFY(ffStrbufEqualS(&strbuf, "-121"));
+
+        ffStrbufClear(&strbuf);
+        ffStrbufAppendDouble(&strbuf, -120.999999, 2, false);
+        VERIFY(ffStrbufEqualS(&strbuf, "-121"));
+
+        ffStrbufClear(&strbuf);
+        ffStrbufAppendDouble(&strbuf, 1.2345e50, 1, false);
+        VERIFY(ffStrbufEqualS(&strbuf, "1.2345e50"));
+
+        ffStrbufClear(&strbuf);
+        ffStrbufAppendDouble(&strbuf, -1.2345e50, 1, false);
+        VERIFY(ffStrbufEqualS(&strbuf, "-1.2345e50"));
+
+        ffStrbufClear(&strbuf);
+        ffStrbufAppendDouble(&strbuf, 1.2345e50, 0, false);
+        VERIFY(ffStrbufEqualS(&strbuf, "1.2345e50"));
+
+        ffStrbufClear(&strbuf);
+        ffStrbufAppendDouble(&strbuf, -1.2345e50, 0, false);
+        VERIFY(ffStrbufEqualS(&strbuf, "-1.2345e50"));
+
+        ffStrbufClear(&strbuf);
+        ffStrbufAppendDouble(&strbuf, 1.2345e50, -1, false);
+        VERIFY(ffStrbufEqualS(&strbuf, "1.2345e50"));
+
+        ffStrbufClear(&strbuf);
+        ffStrbufAppendDouble(&strbuf, -1.2345e50, -1, false);
+        VERIFY(ffStrbufEqualS(&strbuf, "-1.2345e50"));
+
+        ffStrbufClear(&strbuf);
+        ffStrbufAppendDouble(&strbuf, 1.2345e20, 1, false);
+        VERIFY(ffStrbufEqualS(&strbuf, "123450000000000000000"));
+
+        ffStrbufClear(&strbuf);
+        ffStrbufAppendDouble(&strbuf, -1.2345e20, 1, false);
+        VERIFY(ffStrbufEqualS(&strbuf, "-123450000000000000000"));
+
+        ffStrbufClear(&strbuf);
+        ffStrbufAppendDouble(&strbuf, +0.0, 0, false);
+        VERIFY(ffStrbufEqualS(&strbuf, "0"));
+
+        ffStrbufClear(&strbuf);
+        ffStrbufAppendDouble(&strbuf, -0.0, 0, false);
+        VERIFY(ffStrbufEqualS(&strbuf, "-0"));
+
+        ffStrbufDestroy(&strbuf);
+    }
+
+    // decode hex escape sequences
+    {
+        ffStrbufSetS(&strbuf, "Basic\\x20data\\x20partition");
+        VERIFY(ffStrbufDecodeHexEscapeSequences(&strbuf) == true);
+        VERIFY(ffStrbufEqualS(&strbuf, "Basic data partition"));
+
+        ffStrbufSetS(&strbuf, "\\x41\\x42\\x43");
+        VERIFY(ffStrbufDecodeHexEscapeSequences(&strbuf) == true);
+        VERIFY(ffStrbufEqualS(&strbuf, "ABC"));
+
+        ffStrbufSetS(&strbuf, "abc\\x4");
+        VERIFY(ffStrbufDecodeHexEscapeSequences(&strbuf) == false);
+        VERIFY(ffStrbufEqualS(&strbuf, "abc\\x4"));
+
+        ffStrbufSetS(&strbuf, "abc\\xZZ");
+        VERIFY(ffStrbufDecodeHexEscapeSequences(&strbuf) == false);
+        VERIFY(ffStrbufEqualS(&strbuf, "abc\\xZZ"));
+
+        ffStrbufSetS(&strbuf, "abc\\x2G");
+        VERIFY(ffStrbufDecodeHexEscapeSequences(&strbuf) == false);
+        VERIFY(ffStrbufEqualS(&strbuf, "abc\\x2G"));
+    }
+
+    // setS
+    ffStrbufInitStatic(&strbuf, "STATIC");
+    ffStrbufSetS(&strbuf, "DYNAMIC");
+    VERIFY(ffStrbufEqualS(&strbuf, "DYNAMIC"));
+    VERIFY(strbuf.allocated > 0);
+    ffStrbufDestroy(&strbuf);
+
+    ffStrbufInit(&strbuf);
+    ffStrbufSetS(&strbuf, "");
+    VERIFY(ffStrbufEqualS(&strbuf, ""));
+    VERIFY(strbuf.allocated == 0);
+    ffStrbufDestroy(&strbuf);
+
+    ffStrbufInitStatic(&strbuf, "STATIC");
+    ffStrbufSetS(&strbuf, "");
+    VERIFY(ffStrbufEqualS(&strbuf, ""));
+    VERIFY(strbuf.allocated == 0);
+    ffStrbufDestroy(&strbuf);
+
+    ffStrbufInitStatic(&strbuf, "STATIC");
+    ffStrbufSetStatic(&strbuf, "");
+    VERIFY(ffStrbufEqualS(&strbuf, ""));
+    VERIFY(strbuf.allocated == 0);
+    ffStrbufDestroy(&strbuf);
+
+    ffStrbufInitS(&strbuf, "DYNAMIC");
+    ffStrbufSetStatic(&strbuf, "");
+    VERIFY(ffStrbufEqualS(&strbuf, ""));
+    VERIFY(strbuf.allocated == 0);
+    ffStrbufDestroy(&strbuf);
+
+    ffStrbufInitS(&strbuf, "DYNAMIC");
+    ffStrbufSetS(&strbuf, "ANOTHER DYNAMIC");
+    VERIFY(ffStrbufEqualS(&strbuf, "ANOTHER DYNAMIC"));
+    VERIFY(strbuf.allocated > 0);
+    ffStrbufDestroy(&strbuf);
+
+    ffStrbufInit(&strbuf);
+    ffStrbufSetStatic(&strbuf, "");
+    VERIFY(ffStrbufEqualS(&strbuf, ""));
+    VERIFY(strbuf.allocated == 0);
+    ffStrbufDestroy(&strbuf);
+
+    // set
+    ffStrbufInitStatic(&strbuf, "STATIC");
+    {
+        FF_STRBUF_AUTO_DESTROY other = ffStrbufCreateS("DYNAMIC");
+        ffStrbufSet(&strbuf, &other);
+    }
+    VERIFY(ffStrbufEqualS(&strbuf, "DYNAMIC"));
+    VERIFY(strbuf.allocated > 0);
+    ffStrbufDestroy(&strbuf);
+
+    ffStrbufInit(&strbuf);
+    {
+        FF_STRBUF_AUTO_DESTROY other = ffStrbufCreateS("");
+        ffStrbufSet(&strbuf, &other);
+    }
+    VERIFY(ffStrbufEqualS(&strbuf, ""));
+    VERIFY(strbuf.allocated == 0);
+    ffStrbufDestroy(&strbuf);
+
+    ffStrbufInitStatic(&strbuf, "STATIC");
+    {
+        FF_STRBUF_AUTO_DESTROY other = ffStrbufCreateS("");
+        ffStrbufSet(&strbuf, &other);
+    }
+    VERIFY(ffStrbufEqualS(&strbuf, ""));
+    VERIFY(strbuf.allocated == 0);
+    ffStrbufDestroy(&strbuf);
+
+    ffStrbufInitS(&strbuf, "DYNAMIC");
+    {
+        FF_STRBUF_AUTO_DESTROY other = ffStrbufCreateS("");
+        ffStrbufSet(&strbuf, &other);
+    }
+    VERIFY(ffStrbufEqualS(&strbuf, ""));
+    VERIFY(strbuf.allocated > 0);
+    ffStrbufDestroy(&strbuf);
+
+    ffStrbufInitS(&strbuf, "DYNAMIC");
+    {
+        FF_STRBUF_AUTO_DESTROY other = ffStrbufCreateStatic("STATIC");
+        ffStrbufSet(&strbuf, &other);
+    }
+    VERIFY(ffStrbufEqualS(&strbuf, "STATIC"));
+    VERIFY(strbuf.allocated == 0);
+    ffStrbufDestroy(&strbuf);
+
+    // Success
+    puts("\e[32mAll tests passed!" FASTFETCH_TEXT_MODIFIER_RESET);
+}