built and started to test test_context()

9unit.c

@@ -25,6 +25,19 @@
 
 #include "9unit.h"
 
+// Internal Types
+
+// data required by the context management functions
+typedef struct ContextData ContextData;
+
+struct ContextData
+{
+	const char *old_c; // previous context
+	const char *old_fc; // previous full context
+	const char *new_c; // new context
+	char *new_fc; // new full context
+};
+
 // Internal Prototypes
 
 static void init_TestState(TestState *);
@@ -32,6 +45,9 @@ static void print_log(TestState *);
 static void clear_log(TestState *);
 static void reindex(TestState *);
 static void report(const char *);
+static void build_new_context(TestState *, ContextData *);
+static void display_context(TestState *);
+static void restore_context(TestState *, ContextData *);
 
 // Public Functions
 
@@ -111,6 +127,26 @@ append_test_log(TestState *s, const char *msg)
 	s->last_log = entry;
 }
 
+void
+test_context(
+	TestState *s,
+	const char *label,
+	void (*test)(TestState *)
+)
+{
+	if (!(s && test)) return;
+	if (label)
+	{
+		ContextData cd;
+		cd.new_c = label;
+		build_new_context(s, &cd);
+		display_context(s);
+		(*test)(s);
+		restore_context(s, &cd);
+	}
+	else (*test)(s);
+}
+
 // Internal Functions
 
 static void
@@ -169,4 +205,42 @@ report(const char *str)
 	print("%s", str);
 }
 
+static void
+build_new_context(TestState *s, ContextData *cd)
+{
+	cd->old_c = s->context;
+	cd->old_fc = s->full_context;
+	if (s->full_context)
+	{
+		cd->new_fc = malloc(strlen(cd->old_fc) + strlen(cd->new_c) + 3);
+		sprintf(cd->new_fc, "%s: %s", cd->old_fc, cd->new_c);
+	}
+	else
+	{
+		cd->new_fc = malloc(strlen(cd->new_c) + 1);
+		strcpy(cd->new_fc, cd->new_c);
+	}
+	s->context = cd->new_c;
+	s->full_context = cd->new_fc;
+	s->depth++;
+}
+
+static void
+display_context(TestState *s)
+{
+	for (int i = 1; i < s->depth; i++)
+		s->report("\t");
+	s->report(s->context);
+	s->report("\n");
+}
+
+static void
+restore_context(TestState *s, ContextData *cd)
+{
+	s->context = cd->old_c;
+	s->full_context = cd->old_fc;
+	s->depth--;
+	free(cd->new_fc);
+}
+
 //jl

9unit.h

@@ -76,4 +76,11 @@ extern void append_test_log(
 	const char * // the message to append
 );
 
+// Gives additional context for a test
+extern void test_context(
+	TestState *, // the current state
+	const char *, // a description of the context
+	void (*)(TestState *) // the actual test
+); 
+
 //jl

test/mkfile

@@ -17,8 +17,21 @@
 
 </$objtype/mkfile
 
-HFILES=../9unit.h util.h initial-state.h run-test.h append-test-log.h
-OFILES=util.$O initial-state.$O run-test.$O append-test-log.$O
+HFILES=\
+	../9unit.h\
+	util.h\
+	initial-state.h\
+	run-test.h\
+	append-test-log.h\
+	test-context.h
+
+OFILES=\
+	util.$O\
+	initial-state.$O\
+	run-test.$O\
+	append-test-log.$O\
+	test-context.$O
+
 LIB=../9unit.a
 TEST=tests
 

test/test-context.c

@@ -0,0 +1,150 @@
+/*
+
+	9unit
+	Copyright (C) Jonathan Lamothe <jonathan@jlamothe.net>
+
+	This program is free software: you can redistribute it and/or modify
+	it under the terms of the GNU Lesser General Public License as
+	published by the Free Software Foundation, either version 3 of the
+	License, or (at your option) any later version.
+
+	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
+	Lesser General Public License for more details.
+
+	You should have received a copy of the GNU Lesser General Public
+	License along with this program.  If not, see
+	<http://www.gnu.org/licenses/>.
+
+*/
+
+#include <u.h>
+#include <libc.h>
+
+#include "../9unit.h"
+#include "util.h"
+#include "test-context.h"
+
+// Local Types
+
+typedef struct ContextData ContextData;
+
+struct ContextData
+{
+	TestState state;
+	const char *initial_context;
+	const char *initial_full_context;
+	int initial_depth;
+	const char *new_context;
+	const char *sub_context;
+	const char *sub_full_context;
+	int sub_depth;
+	const char *expected_sub_full_context;
+	int expected_sub_depth;
+};
+
+// Local Prototypes
+
+static void no_prior_context(TestState *);
+static void init_ContextData(ContextData *);
+static void run_test_context(ContextData *);
+static void get_context(TestState *);
+static void check_results(TestState *, ContextData *);
+static void check_sub_context(TestState *);
+static void clean_up(ContextData *);
+
+// Public Functions
+
+void
+test_test_context(TestState *s)
+{
+	test_context(s, "no prior context", no_prior_context);
+}
+
+// Local Functions
+
+static void
+no_prior_context(TestState *s)
+{
+	// set initial state
+	ContextData cd;
+	cd.new_context = "my test";
+	cd.initial_context = 0;
+	cd.initial_full_context = 0;
+	cd.initial_depth = 0;
+	init_ContextData(&cd);
+
+	run_test_context(&cd);
+	cd.expected_sub_full_context = "my test";
+	cd.expected_sub_depth = 1;
+	check_results(s, &cd);
+	clean_up(&cd);
+}
+
+static void
+init_ContextData(ContextData *cd)
+{
+	mk_sample_state(&cd->state);
+	cd->state.context = cd->initial_context;
+	cd->state.full_context = cd->initial_full_context;
+	cd->state.depth = cd->initial_depth;
+}
+
+static void
+run_test_context(ContextData *cd)
+{
+	void *old_ptr = cd->state.ptr;
+	cd->state.ptr = cd;
+	test_context(&cd->state, cd->new_context, get_context);
+	cd->state.ptr = old_ptr;
+}
+
+static void
+get_context(TestState *s)
+{
+	ContextData *cd = s->ptr;
+
+	// get the context
+	if (s->context)
+	{
+		char *c = malloc(strlen(s->context) + 1);
+		strcpy(c, s->context);
+		cd->sub_context = c;
+	}
+	else cd->sub_context = 0;
+
+	// get the full context
+	if (s->full_context)
+	{
+		char *fc = malloc(strlen(s->full_context) + 1);
+		strcpy(fc, s->full_context);
+		cd->sub_full_context = fc;
+	}
+	else cd->sub_full_context = 0;
+
+	// get the depth
+	cd->sub_depth = s->depth;
+}
+
+static void
+check_results(TestState *s, ContextData *cd)
+{
+	void *old_ptr = s->ptr;
+	s->ptr = cd;
+	test_context(s, "sub context", check_sub_context);
+	s->ptr = old_ptr;
+}
+
+static void
+check_sub_context(TestState *s)
+{
+	ContextData *cd = s->ptr;
+}
+
+static void
+clean_up(ContextData *cd)
+{
+}
+
+//jl

test/test-context.h

@@ -0,0 +1,24 @@
+/*
+
+	9unit
+	Copyright (C) Jonathan Lamothe <jonathan@jlamothe.net>
+
+	This program is free software: you can redistribute it and/or modify
+	it under the terms of the GNU Lesser General Public License as
+	published by the Free Software Foundation, either version 3 of the
+	License, or (at your option) any later version.
+
+	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
+	Lesser General Public License for more details.
+
+	You should have received a copy of the GNU Lesser General Public
+	License along with this program.  If not, see
+	<http://www.gnu.org/licenses/>.
+
+*/
+
+extern void test_test_context(TestState *);
+
+//jl

test/tests.c

@@ -26,6 +26,7 @@
 #include "initial-state.h"
 #include "run-test.h"
 #include "append-test-log.h"
+#include "test-context.h"
 
 // Internal Prototypes
 
@@ -55,6 +56,7 @@ tests(TestState *s)
 	test_initial_state(s);
 	test_run_test(s);
 	test_append_test_log(s);
+	test_context(s, "test_context()", test_test_context);
 }
 
 //jl