From 57b81eacf20423c70a19d325bffee861d8b3a882 Mon Sep 17 00:00:00 2001
From: Thomas Schmucker <ts@its1.de>
Date: Fri, 26 Jun 2020 17:10:12 +0200
Subject: Testcases für erfolgreiches Fehlermanagement...
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---
 csv-test.c | 157 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 157 insertions(+)

diff --git a/csv-test.c b/csv-test.c
index 5fd0e15..ecf55cd 100644
--- a/csv-test.c
+++ b/csv-test.c
@@ -2,6 +2,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <assert.h>
+#include <setjmp.h>
 
 #include "csv.h"
 
@@ -411,6 +412,157 @@ test6(void)
 	FMEMCLOSE(f);
 }
 
+static void
+cb_error(csv_err_t err, void *cb_arg)
+{
+	longjmp(*((jmp_buf *) cb_arg), err);
+}
+
+void
+error1(void)
+{
+	jmp_buf env;
+	csv_options_t csv_options = csv_default_options;
+	csv_options.cb_error = cb_error;
+	csv_options.cb_error_arg = &env;
+
+	csv_t csv;
+	csv_init_opt(&csv, &csv_options);
+
+	FILE *f;
+	char data[] = ",";
+
+	FMEMOPEN(f, data);
+
+	switch ( setjmp(env) ) {
+	case CSV_ERR_OK:
+		assert( csv_read(&csv, f) == 2 );
+		assert( csv_nfields(&csv) == 2 );
+
+		// force an "out of range"-Exception!
+		assert( strcmp(csv_field(&csv, 2), "will fail") == 0 );
+		break;
+
+	case CSV_ERR_OUT_OF_RANGE:
+		csv_cleanup(&csv);
+		break;
+
+	default:
+		assert(!"this should not be happen!");
+	}
+
+	FMEMCLOSE(f);
+}
+
+void
+error2(void)
+{
+	jmp_buf env;
+	csv_options_t csv_options = csv_default_options;
+	csv_options.cb_error = cb_error;
+	csv_options.cb_error_arg = &env;
+
+	csv_t csv;
+	csv_init_opt(&csv, &csv_options);
+
+	FILE *f = fopen("/dev/null", "r");
+	assert(f != NULL);
+	fputc('T', f);	// Set Error-Flag!
+
+	switch ( setjmp(env) ) {
+	case CSV_ERR_OK:
+		assert( csv_read(&csv, f) == -1 );
+		break;
+
+	case CSV_ERR_IO_READ:
+		csv_cleanup(&csv);
+		break;
+
+	default:
+		assert(!"this should not be happen!");
+	}
+
+	fclose(f);
+}
+
+void *
+my_allocate(size_t n, size_t sz, void *cb_arg)
+{
+	(void) cb_arg;
+
+	void *ptr = calloc(n, sz);
+	return ptr;
+}
+
+void *
+my_allocate_null(size_t n, size_t sz, void *cb_arg)
+{
+	(void) n;
+	(void) sz;
+	(void) cb_arg;
+
+	return NULL;
+}
+
+void *
+my_reallocate(void *ptr, size_t n, size_t sz, void *cb_arg)
+{
+	(void) ptr;
+	(void) n;
+	(void) sz;
+	(void) cb_arg;
+
+	return NULL;
+}
+
+void
+my_free(void *ptr, size_t n, size_t sz, void *cb_arg)
+{
+	(void) n;
+	(void) sz;
+	(void) cb_arg;
+
+	free(ptr);
+}
+
+void
+memory_fail1(void)
+{
+	jmp_buf env;
+
+	csv_options_t csv_options = csv_default_options;
+	csv_options.cb_error = cb_error;
+	csv_options.cb_error_arg = &env;
+	csv_options.cb_allocate = my_allocate;
+	csv_options.cb_reallocate = my_reallocate;
+	csv_options.cb_free = my_free;
+
+	csv_t csv;
+	csv_init_opt(&csv, &csv_options);
+
+	char data[] = "A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T";
+
+	FILE *f;
+	FMEMOPEN(f, data);
+	assert(f != NULL);
+
+	switch ( setjmp(env) ) {
+	case CSV_ERR_OK:
+		assert( csv_read(&csv, f) == 20 );
+		assert(!"this should not be happen!");
+		break;
+
+	case CSV_ERR_OUT_OF_MEMORY:
+		csv_cleanup(&csv);
+		break;
+
+	default:
+		assert(!"this should not be happen!");
+	}
+
+	FMEMCLOSE(f);
+}
+
 int
 main(void)
 {
@@ -421,5 +573,10 @@ main(void)
 	test5();
 	test6();
 
+	error1();
+	error2();
+
+	memory_fail1();
+
 	return EXIT_SUCCESS;
 }
-- 
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