120 lines
2.7 KiB
C
120 lines
2.7 KiB
C
#include "unit-test.h"
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#include "strbuf.h"
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/* wrapper that supplies tests with an empty, initialized strbuf */
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static void setup(void (*f)(struct strbuf*, const void*),
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const void *data)
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{
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struct strbuf buf = STRBUF_INIT;
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f(&buf, data);
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strbuf_release(&buf);
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cl_assert_equal_i(buf.len, 0);
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cl_assert_equal_i(buf.alloc, 0);
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}
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/* wrapper that supplies tests with a populated, initialized strbuf */
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static void setup_populated(void (*f)(struct strbuf*, const void*),
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const char *init_str, const void *data)
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{
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struct strbuf buf = STRBUF_INIT;
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strbuf_addstr(&buf, init_str);
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cl_assert_equal_i(buf.len, strlen(init_str));
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f(&buf, data);
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strbuf_release(&buf);
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cl_assert_equal_i(buf.len, 0);
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cl_assert_equal_i(buf.alloc, 0);
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}
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static void assert_sane_strbuf(struct strbuf *buf)
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{
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/* Initialized strbufs should always have a non-NULL buffer */
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cl_assert(buf->buf != NULL);
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/* Buffers should always be NUL-terminated */
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cl_assert(buf->buf[buf->len] == '\0');
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/*
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* In case the buffer contains anything, `alloc` must alloc must
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* be at least one byte larger than `len`.
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*/
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if (buf->len)
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cl_assert(buf->len < buf->alloc);
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}
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void test_strbuf__static_init(void)
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{
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struct strbuf buf = STRBUF_INIT;
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cl_assert_equal_i(buf.len, 0);
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cl_assert_equal_i(buf.alloc, 0);
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cl_assert(buf.buf[0] == '\0');
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}
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void test_strbuf__dynamic_init(void)
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{
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struct strbuf buf;
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strbuf_init(&buf, 1024);
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assert_sane_strbuf(&buf);
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cl_assert_equal_i(buf.len, 0);
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cl_assert(buf.alloc >= 1024);
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cl_assert(buf.buf[0] == '\0');
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strbuf_release(&buf);
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}
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static void t_addch(struct strbuf *buf, const void *data)
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{
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const char *p_ch = data;
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const char ch = *p_ch;
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size_t orig_alloc = buf->alloc;
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size_t orig_len = buf->len;
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assert_sane_strbuf(buf);
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strbuf_addch(buf, ch);
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assert_sane_strbuf(buf);
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cl_assert_equal_i(buf->len, orig_len + 1);
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cl_assert(buf->alloc >= orig_alloc);
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cl_assert(buf->buf[buf->len] == '\0');
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}
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static void t_addstr(struct strbuf *buf, const void *data)
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{
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const char *text = data;
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size_t len = strlen(text);
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size_t orig_alloc = buf->alloc;
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size_t orig_len = buf->len;
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assert_sane_strbuf(buf);
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strbuf_addstr(buf, text);
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assert_sane_strbuf(buf);
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cl_assert_equal_i(buf->len, orig_len + len);
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cl_assert(buf->alloc >= orig_alloc);
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cl_assert(buf->buf[buf->len] == '\0');
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cl_assert_equal_s(buf->buf + orig_len, text);
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}
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void test_strbuf__add_single_char(void)
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{
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setup(t_addch, "a");
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}
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void test_strbuf__add_empty_char(void)
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{
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setup(t_addch, "");
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}
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void test_strbuf__add_append_char(void)
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{
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setup_populated(t_addch, "initial value", "a");
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}
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void test_strbuf__add_single_str(void)
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{
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setup(t_addstr, "hello there");
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}
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void test_strbuf__add_append_str(void)
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{
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setup_populated(t_addstr, "initial value", "hello there");
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}
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