Initial import

test/libc/stdio/fgetc_test.c

@@ -0,0 +1,70 @@
+/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
+│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8                                :vi│
+╞══════════════════════════════════════════════════════════════════════════════╡
+│ Copyright 2020 Justine Alexandra Roberts Tunney                              │
+│                                                                              │
+│ This program is free software; you can redistribute it and/or modify         │
+│ it under the terms of the GNU General Public License as published by         │
+│ the Free Software Foundation; version 2 of the License.                      │
+│                                                                              │
+│ This program is distributed in the hope that it will be useful, but          │
+│ WITHOUT ANY WARRANTY; without even the implied warranty of                   │
+│ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU             │
+│ General Public License for more details.                                     │
+│                                                                              │
+│ You should have received a copy of the GNU General Public License            │
+│ along with this program; if not, write to the Free Software                  │
+│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA                │
+│ 02110-1301 USA                                                               │
+╚─────────────────────────────────────────────────────────────────────────────*/
+#include "libc/bits/bits.h"
+#include "libc/calls/calls.h"
+#include "libc/stdio/stdio.h"
+#include "libc/testlib/testlib.h"
+
+int pipefd[2];
+FILE *f, *reader, *writer;
+
+TEST(fgetc, testEnd) {
+  f = fmemopen(NULL, BUFSIZ, "r+");
+  EXPECT_EQ(EOF, fgetc(f));
+  EXPECT_TRUE(feof(f));
+  EXPECT_FALSE(ferror(f));
+  EXPECT_EQ(0, fclose(f));
+}
+
+TEST(fgetwc, testEnd) {
+  f = fmemopen(NULL, BUFSIZ, "r+");
+  EXPECT_EQ(WEOF, fgetwc(f));
+  EXPECT_TRUE(feof(f));
+  EXPECT_FALSE(ferror(f));
+  EXPECT_EQ(0, fclose(f));
+}
+
+TEST(fgetwc, testMultibyte) {
+  f = fmemopen(NULL, BUFSIZ, "r+");
+  EXPECT_EQ(L'𝑥', fputwc(L'𝑥', f));
+  EXPECT_EQ(L'𝑦', fputwc(L'𝑦', f));
+  EXPECT_EQ(L'𝑧', fputwc(L'𝑧', f));
+  EXPECT_EQ(L'𝑥', fgetwc(f));
+  EXPECT_EQ(L'𝑦', fgetwc(f));
+  EXPECT_EQ(L'𝑧', fgetwc(f));
+  EXPECT_EQ(WEOF, fgetwc(f));
+  EXPECT_TRUE(feof(f));
+  fclose(f);
+}
+
+TEST(fgetc, testPipe) {
+  ASSERT_NE(-1, pipe(pipefd));
+  writer = fdopen(pipefd[1], "w");
+  reader = fdopen(pipefd[0], "r");
+  EXPECT_EQ('a', fputc('a', writer));
+  EXPECT_EQ('b', fputc('b', writer));
+  EXPECT_EQ('c', fputc('c', writer));
+  EXPECT_EQ(3, fflush(writer));
+  EXPECT_EQ('a', fgetc(reader));
+  EXPECT_EQ('b', fgetc(reader));
+  EXPECT_EQ('c', fgetc(reader));
+  EXPECT_EQ(0, fclose(reader));
+  EXPECT_EQ(0, fclose(writer));
+}