Add more FS tests

Including a test for #1685

tests/host/Makefile

@@ -75,14 +75,14 @@ gcov: test
 	find $(CORE_PATH) -name "*.gcno" -exec $(GCOV) -r -pb {} +
 
 build-info:
-	echo "-------- build tools info --------"
-	echo "CC: " $(CC)
+	@echo "-------- build tools info --------"
+	@echo "CC: " $(CC)
 	$(CC) -v
-	echo "CXX: " $(CXX)
+	@echo "CXX: " $(CXX)
 	$(CXX) -v
-	echo "GCOV: " $(GCOV)
+	@echo "GCOV: " $(GCOV)
 	$(GCOV) -v
-	echo "----------------------------------"
+	@echo "----------------------------------"
 
 $(BINARY_DIRECTORY):
 	mkdir -p $@

tests/host/fs/test_fs.cpp

@@ -1,43 +1,82 @@
 /*
  test_fs.cpp - host side file system tests
  Copyright © 2016 Ivan Grokhotkov
- 
+
  Permission is hereby granted, free of charge, to any person obtaining a copy
  of this software and associated documentation files (the "Software"), to deal
  in the Software without restriction, including without limitation the rights
  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  copies of the Software, and to permit persons to whom the Software is
  furnished to do so, subject to the following conditions:
- 
+
  The above copyright notice and this permission notice shall be included in
  all copies or substantial portions of the Software.
 */
 
 #include <catch.hpp>
+#include <map>
 #include <FS.h>
 #include "../common/spiffs_mock.h"
+#include <spiffs/spiffs.h>
 
+static void createFile (const char* name, const char* content)
+{
+    auto f = SPIFFS.open(name, "w");
+    REQUIRE(f);
+    if (content) {
+        f.print(content);
+    }
+}
+
+static String readFile (const char* name)
+{
+    auto f = SPIFFS.open(name, "r");
+    if (f) {
+        return f.readString();
+    }
+    return String();
+}
+
+static std::set<String> listDir (const char* path)
+{
+    std::set<String> result;
+    Dir dir = SPIFFS.openDir(path);
+    while (dir.next()) {
+        REQUIRE(result.find(dir.fileName()) == std::end(result));
+        result.insert(dir.fileName());
+    }
+    return result;
+}
 
 TEST_CASE("FS can begin","[fs]")
 {
-    SPIFFS_MOCK_DECLARE(1024, 8, 512);
+    SPIFFS_MOCK_DECLARE(64, 8, 512);
     REQUIRE(SPIFFS.begin());
 }
 
+TEST_CASE("FS can't begin with zero size","[fs]")
+{
+    SPIFFS_MOCK_DECLARE(0, 8, 512);
+    REQUIRE_FALSE(SPIFFS.begin());
+}
+
+TEST_CASE("Before begin is called, open will fail","[fs]")
+{
+    SPIFFS_MOCK_DECLARE(64, 8, 512);
+    REQUIRE_FALSE(SPIFFS.open("/foo", "w"));
+}
+
 TEST_CASE("FS can create file","[fs]")
 {
-    SPIFFS_MOCK_DECLARE(1024, 8, 512);
+    SPIFFS_MOCK_DECLARE(64, 8, 512);
     REQUIRE(SPIFFS.begin());
-    {
-        File f = SPIFFS.open("config.txt", "w");
-        REQUIRE(f);
-    }
-    REQUIRE(SPIFFS.exists("config.txt"));
+    createFile("/test", "");
+    REQUIRE(SPIFFS.exists("/test"));
 }
 
 TEST_CASE("Files can be written and appended to","[fs]")
 {
-    SPIFFS_MOCK_DECLARE(1024, 8, 512);
+    SPIFFS_MOCK_DECLARE(64, 8, 512);
     REQUIRE(SPIFFS.begin());
     {
         File f = SPIFFS.open("config1.txt", "w");
@@ -61,20 +100,76 @@ TEST_CASE("Files can be written and appended to","[fs]")
 
 TEST_CASE("Files persist after reset", "[fs]")
 {
-    SPIFFS_MOCK_DECLARE(1024, 8, 512);
+    SPIFFS_MOCK_DECLARE(64, 8, 512);
     REQUIRE(SPIFFS.begin());
-    {
-        File f = SPIFFS.open("config1.txt", "w");
-        REQUIRE(f);
-        f.println("file 1");
-    }
+    createFile("config1.txt", "file 1");
+
     SPIFFS_MOCK_RESET();
     REQUIRE(SPIFFS.begin());
-    {
-        File f = SPIFFS.open("config1.txt", "r");
-        REQUIRE(f);
-        REQUIRE(f.readString() == "file 1\r\n");
-    }
+    REQUIRE(readFile("config1.txt") == "file 1");
 }
 
 
+TEST_CASE("Filesystem is empty after format", "[fs]")
+{
+    SPIFFS_MOCK_DECLARE(64, 8, 512);
+    REQUIRE(SPIFFS.format());
+    REQUIRE(SPIFFS.begin());
+    createFile("/1", "first");
+    createFile("/2", "second");
+    REQUIRE(SPIFFS.format());
+    Dir root = SPIFFS.openDir("/");
+    size_t count = 0;
+    while (root.next()) {
+        ++count;
+    }
+    REQUIRE(count == 0);
+}
+
+TEST_CASE("Dir lists all files", "[fs]")
+{
+    SPIFFS_MOCK_DECLARE(64, 8, 512);
+    REQUIRE(SPIFFS.begin());
+    createFile("/empty", "");
+    createFile("/not_empty", "some text");
+    createFile("/another", "more text");
+    createFile("/subdir/empty", "");
+    createFile("/subdir/not_empty", "text again");
+    auto files = listDir("/");
+    REQUIRE(files.size() == 5);
+    REQUIRE(files.find("/empty") != std::end(files));
+    REQUIRE(files.find("/not_empty") != std::end(files));
+    REQUIRE(files.find("/another") != std::end(files));
+    REQUIRE(files.find("/subdir/empty") != std::end(files));
+    REQUIRE(files.find("/subdir/not_empty") != std::end(files));
+}
+
+TEST_CASE("File names which are too long are rejected", "[fs]")
+{
+    SPIFFS_MOCK_DECLARE(64, 8, 512);
+    REQUIRE(SPIFFS.begin());
+    const char* emptyName = "";
+    const char* longName_31 = "/234567890123456789012345678901";
+    const char* longName_32 = "/2345678901234567890123456789012";
+    REQUIRE_FALSE(SPIFFS.open(emptyName, "w"));
+    REQUIRE_FALSE(SPIFFS.open(emptyName, "r"));
+    REQUIRE_FALSE(SPIFFS.exists(emptyName));
+    REQUIRE_FALSE(SPIFFS.open(longName_32, "w"));
+    REQUIRE_FALSE(SPIFFS.open(longName_32, "r"));
+    REQUIRE_FALSE(SPIFFS.exists(longName_32));
+    REQUIRE(SPIFFS.open(longName_31, "w"));
+    REQUIRE(SPIFFS.open(longName_31, "r"));
+    REQUIRE(SPIFFS.exists(longName_31));
+    auto files = listDir("");
+    REQUIRE(files.empty());
+}
+
+TEST_CASE("#1685 Duplicate files", "[fs][bugreport]") {
+    SPIFFS_MOCK_DECLARE(64, 8, 512);
+    REQUIRE(SPIFFS.begin());
+    createFile("/config", "some text");
+    createFile("/data", "");
+    readFile("/config");
+    createFile("/data", "more text");
+    listDir("/");
+}