Merge lp:~kyrofa/go-trust-store/add_answer into lp:go-trust-store

[Kyle Fazzari]

Add Answer type and shim, representing a response from the user.

Add Answer type and shim, representing a response from the user.

[lp:~kyrofa/go-trust-store/add_answer]

2. By Kyle Fazzari on 2015-10-01

Add Answer type and shim, representing a response from the user.

Signed-off-by: Kyle Fazzari <email address hidden>

[dobey (dobey)]

review: Approve

=== added directory 'trust'
=== added file 'trust/answer.go'
--- trust/answer.go	1970-01-01 00:00:00 +0000
+++ trust/answer.go	2015-10-01 18:03:29 +0000
@@ -0,0 +1,72 @@
+/* Copyright (C) 2015 Canonical Ltd.
+ *
+ * This file is part of go-trust-store.
+ *
+ * go-trust-store is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License version 3, as
+ * published by the Free Software Foundation.
+ *
+ * go-trust-store 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 go-trust-store. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Authored by: Kyle Fazzari <[e-mail]>
+ */
+
+package trust
+
+// #include <stdlib.h>
+// #include "answer_shim.h"
+import "C"
+
+// Answer represents a response from the user: yes or no, granted or denied.
+type Answer int
+
+const (
+	AnswerDenied Answer = iota
+	AnswerGranted
+)
+
+type shimMapping struct {
+	shim C.Answer
+	name string
+}
+
+// answerShimMappings maps the answers to their string and shim representations.
+var answerShimMappings = map[Answer]shimMapping{
+	AnswerDenied: shimMapping{
+		shim: C.DENIED,
+		name: "DENIED",
+	},
+	AnswerGranted: shimMapping{
+		shim: C.GRANTED,
+		name: "GRANTED",
+	},
+}
+
+// AnswerFromShim converts a shim answer to an Answer.
+func AnswerFromShim(shimInt int) Answer {
+	shim := (C.Answer)(shimInt)
+
+	for key, value := range answerShimMappings {
+		if value.shim == shim {
+			return key
+		}
+	}
+
+	return AnswerDenied
+}
+
+// ToShim converts an Answer to a shim answer.
+func (answer Answer) ToShim() int {
+	return int(answerShimMappings[answer].shim)
+}
+
+// String returns the string representation of the answer.
+func (answer Answer) String() string {
+	return answerShimMappings[answer].name
+}

=== added file 'trust/answer_shim.h'
--- trust/answer_shim.h	1970-01-01 00:00:00 +0000
+++ trust/answer_shim.h	2015-10-01 18:03:29 +0000
@@ -0,0 +1,40 @@
+/* Copyright (C) 2015 Canonical Ltd.
+ *
+ * This file is part of go-trust-store.
+ *
+ * go-trust-store is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License version 3, as
+ * published by the Free Software Foundation.
+ *
+ * go-trust-store 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 go-trust-store. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Authored by: Kyle Fazzari <[e-mail]>
+ */
+
+#ifndef GO_TRUST_STORE_ANSWER_SHIM_H
+#define GO_TRUST_STORE_ANSWER_SHIM_H
+
+#include <time.h>
+#include <inttypes.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef enum
+{
+	DENIED,
+	GRANTED
+} Answer;
+
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
+#endif // GO_TRUST_STORE_ANSWER_SHIM_H

=== added file 'trust/answer_test.go'
--- trust/answer_test.go	1970-01-01 00:00:00 +0000
+++ trust/answer_test.go	2015-10-01 18:03:29 +0000
@@ -0,0 +1,32 @@
+/* Copyright (C) 2015 Canonical Ltd.
+ *
+ * This file is part of go-trust-store.
+ *
+ * go-trust-store is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License version 3, as
+ * published by the Free Software Foundation.
+ *
+ * go-trust-store 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 go-trust-store. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Authored by: Kyle Fazzari <[e-mail]>
+ */
+
+package trust
+
+import (
+	"testing"
+)
+
+func TestAnswer_FromShim(t *testing.T) {
+	testAnswer_FromShim(t)
+}
+
+func TestAnswer_ToShim(t *testing.T) {
+	testAnswer_ToShim(t)
+}

=== added file 'trust/test_answer.go'
--- trust/test_answer.go	1970-01-01 00:00:00 +0000
+++ trust/test_answer.go	2015-10-01 18:03:29 +0000
@@ -0,0 +1,63 @@
+/* Copyright (C) 2015 Canonical Ltd.
+ *
+ * This file is part of go-trust-store.
+ *
+ * go-trust-store is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License version 3, as
+ * published by the Free Software Foundation.
+ *
+ * go-trust-store 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 go-trust-store. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Authored by: Kyle Fazzari <[e-mail]>
+ */
+
+// Since cgo cannot be used within Go test files, this file holds the actual
+// tests and the corresponding test file calls them (i.e. the tests contained
+// within this file are not run directly, but are called from other tests).
+package trust
+
+// #include <stdlib.h>
+// #include "answer_shim.h"
+import "C"
+
+import (
+	"testing"
+)
+
+var answerTests = []struct {
+	answer Answer
+	shim   C.Answer
+}{
+	{AnswerDenied, C.DENIED},
+	{AnswerGranted, C.GRANTED},
+}
+
+// Test typical ToShim usage.
+func testAnswer_ToShim(t *testing.T) {
+	for i, test := range answerTests {
+		shim := C.Answer(test.answer.ToShim())
+
+		if shim != test.shim {
+			t.Errorf("Test case %d: Shim was %d, expected %d", i, shim,
+				test.shim)
+		}
+	}
+}
+
+// Test typical AnswerFromShim usage.
+func testAnswer_FromShim(t *testing.T) {
+	for i, test := range answerTests {
+		answer := AnswerFromShim(int(test.shim))
+
+		if answer != test.answer {
+			t.Errorf("Test case %d: Answer was %s, expected %s", i, answer,
+				test.answer)
+		}
+	}
+}