104 lines
4.6 KiB
C
104 lines
4.6 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2020 Justine Alexandra Roberts Tunney │
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│ │
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│ This program is free software; you can redistribute it and/or modify │
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│ it under the terms of the GNU General Public License as published by │
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│ the Free Software Foundation; version 2 of the License. │
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│ │
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│ This program is distributed in the hope that it will be useful, but │
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│ WITHOUT ANY WARRANTY; without even the implied warranty of │
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│ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU │
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│ General Public License for more details. │
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│ │
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│ You should have received a copy of the GNU General Public License │
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│ along with this program; if not, write to the Free Software │
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│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │
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│ 02110-1301 USA │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/runtime/internal.h"
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#include "libc/str/str.h"
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#include "libc/testlib/testlib.h"
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TEST(GetDosEnviron, testOneVariable) {
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#define kEnv u"A=Und wird die Welt auch in Flammen stehen\0"
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size_t max = 2;
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size_t size = sizeof(kEnv) >> 1;
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char *block = tmalloc(size);
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char16_t *env = memcpy(tmalloc(sizeof(kEnv)), kEnv, sizeof(kEnv));
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char **envp = tmalloc(max * sizeof(char *));
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EXPECT_EQ(1, GetDosEnviron(env, block, size, envp, max));
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EXPECT_STREQ("A=Und wird die Welt auch in Flammen stehen", envp[0]);
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EXPECT_EQ(NULL, envp[1]);
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ASSERT_BINEQ(u"A=Und wird die Welt auch in Flammen stehen ", block);
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tfree(envp);
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tfree(env);
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tfree(block);
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#undef kEnv
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}
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TEST(GetDosEnviron, testTwoVariables) {
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#define kEnv \
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(u"𐌰𐌱𐌲𐌳=Und wird die Welt auch in Flammen stehen\0" \
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u"𐌴𐌵𐌶𐌷=Wir werden wieder auferstehen\0")
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size_t max = 3;
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size_t size = 1024;
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char *block = tmalloc(size);
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char16_t *env = memcpy(tmalloc(sizeof(kEnv)), kEnv, sizeof(kEnv));
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char **envp = tmalloc(max * sizeof(char *));
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EXPECT_EQ(2, GetDosEnviron(env, block, size, envp, max));
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EXPECT_STREQ("𐌰𐌱𐌲𐌳=Und wird die Welt auch in Flammen stehen", envp[0]);
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EXPECT_STREQ("𐌴𐌵𐌶𐌷=Wir werden wieder auferstehen", envp[1]);
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EXPECT_EQ(NULL, envp[2]);
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tfree(envp);
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tfree(env);
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tfree(block);
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#undef kEnv
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}
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TEST(GetDosEnviron, testOverrun_truncatesWithGrace) {
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#define kEnv u"A=Und wird die Welt auch in Flammen stehen\0"
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size_t max = 2;
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size_t size = sizeof(kEnv) >> 2;
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char *block = tmalloc(size);
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char16_t *env = memcpy(tmalloc(sizeof(kEnv)), kEnv, sizeof(kEnv));
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char **envp = tmalloc(max * sizeof(char *));
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EXPECT_EQ(1, GetDosEnviron(env, block, size, envp, max));
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EXPECT_STREQ("A=Und wird die Welt ", envp[0]);
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EXPECT_EQ(NULL, envp[1]);
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ASSERT_BINEQ(u"A=Und wird die Welt ", block);
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tfree(envp);
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tfree(env);
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tfree(block);
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#undef kEnv
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}
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TEST(GetDosEnviron, testEmpty_doesntTouchMemory) {
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EXPECT_EQ(0, GetDosEnviron(u"", NULL, 0, NULL, 0));
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}
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TEST(GetDosEnviron, testEmpty_zeroTerminatesWheneverPossible_1) {
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size_t max = 1;
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char **envp = tmalloc(max * sizeof(char *));
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EXPECT_EQ(0, GetDosEnviron(u"", NULL, 0, envp, max));
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EXPECT_EQ(NULL, envp[0]);
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tfree(envp);
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}
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TEST(GetDosEnviron, testEmpty_zeroTerminatesWheneverPossible_2) {
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size_t size = 1;
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char *block = tmalloc(size);
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EXPECT_EQ(0, GetDosEnviron(u"", block, size, NULL, 0));
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EXPECT_BINEQ(u" ", block);
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tfree(block);
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}
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TEST(GetDosEnviron, testEmpty_zeroTerminatesWheneverPossible_3) {
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size_t size = 2;
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char *block = tmalloc(size);
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EXPECT_EQ(0, GetDosEnviron(u"", block, size, NULL, 0));
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EXPECT_BINEQ(u" ", block);
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tfree(block);
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}
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