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Exclude more lines from test coverage (#1663)

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These fall into a few categories:
- `_unreachable()`
- Verbose print messages
- Errors that should never practically occur (alloc/read/write failure,
  more than UINT32_MAX anonymous labels, etc)
This commit is contained in:
Rangi
2025-02-17 04:56:10 -05:00
committed by GitHub
parent 632342b254
commit 0150eb4bf3
10 changed files with 88 additions and 12 deletions
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28
src/gfx/process.cpp
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@@ -193,13 +193,15 @@ public:
PNG_LIBPNG_VER_STRING, static_cast<png_voidp>(this), handleError, handleWarning
);
if (!png) {
fatal("Failed to allocate PNG structure: %s", strerror(errno));
fatal("Failed to create PNG read structure: %s", strerror(errno)); // LCOV_EXCL_LINE
}
info = png_create_info_struct(png);
if (!info) {
// LCOV_EXCL_START
png_destroy_read_struct(&png, nullptr, nullptr);
fatal("Failed to allocate PNG info structure: %s", strerror(errno));
fatal("Failed to create PNG info structure: %s", strerror(errno));
// LCOV_EXCL_STOP
}
png_set_read_fn(png, this, readData);
@@ -555,6 +557,7 @@ static std::tuple<DefaultInitVec<size_t>, std::vector<Palette>>
auto [mappings, nbPalettes] = overloadAndRemove(protoPalettes);
assume(mappings.size() == protoPalettes.size());
// LCOV_EXCL_START
if (options.verbosity >= Options::VERB_INTERM) {
fprintf(
stderr,
@@ -566,6 +569,7 @@ static std::tuple<DefaultInitVec<size_t>, std::vector<Palette>>
fprintf(stderr, "%zu -> %zu\n", i, mappings[i]);
}
}
// LCOV_EXCL_STOP
std::vector<Palette> palettes(nbPalettes);
// If the image contains at least one transparent pixel, force transparency in the first slot of
@@ -653,6 +657,7 @@ static std::tuple<DefaultInitVec<size_t>, std::vector<Palette>>
}
static void outputPalettes(std::vector<Palette> const &palettes) {
// LCOV_EXCL_START
if (options.verbosity >= Options::VERB_INTERM) {
for (auto &&palette : palettes) {
fputs("{ ", stderr);
@@ -662,6 +667,7 @@ static void outputPalettes(std::vector<Palette> const &palettes) {
fputs("}\n", stderr);
}
}
// LCOV_EXCL_STOP
if (palettes.size() > options.nbPalettes) {
// If the palette generation is wrong, other (dependee) operations are likely to be
@@ -676,7 +682,9 @@ static void outputPalettes(std::vector<Palette> const &palettes) {
if (!options.palettes.empty()) {
File output;
if (!output.open(options.palettes, std::ios_base::out | std::ios_base::binary)) {
// LCOV_EXCL_START
fatal("Failed to create \"%s\": %s", output.c_str(options.palettes), strerror(errno));
// LCOV_EXCL_STOP
}
for (Palette const &palette : palettes) {
@@ -829,7 +837,9 @@ static void outputUnoptimizedTileData(
) {
File output;
if (!output.open(options.output, std::ios_base::out | std::ios_base::binary)) {
// LCOV_EXCL_START
fatal("Failed to create \"%s\": %s", output.c_str(options.output), strerror(errno));
// LCOV_EXCL_STOP
}
uint16_t widthTiles = options.inputSlice.width ? options.inputSlice.width : png.getWidth() / 8;
@@ -868,7 +878,9 @@ static void outputUnoptimizedMaps(
if (!path.empty()) {
file.emplace();
if (!file->open(path, std::ios_base::out | std::ios_base::binary)) {
// LCOV_EXCL_START
fatal("Failed to create \"%s\": %s", file->c_str(options.tilemap), strerror(errno));
// LCOV_EXCL_STOP
}
}
};
@@ -1013,7 +1025,9 @@ static UniqueTiles dedupTiles(
static void outputTileData(UniqueTiles const &tiles) {
File output;
if (!output.open(options.output, std::ios_base::out | std::ios_base::binary)) {
// LCOV_EXCL_START
fatal("Failed to create \"%s\": %s", output.c_str(options.output), strerror(errno));
// LCOV_EXCL_STOP
}
uint16_t tileID = 0;
@@ -1035,7 +1049,9 @@ static void outputTileData(UniqueTiles const &tiles) {
static void outputTilemap(DefaultInitVec<AttrmapEntry> const &attrmap) {
File output;
if (!output.open(options.tilemap, std::ios_base::out | std::ios_base::binary)) {
// LCOV_EXCL_START
fatal("Failed to create \"%s\": %s", output.c_str(options.tilemap), strerror(errno));
// LCOV_EXCL_STOP
}
for (AttrmapEntry const &entry : attrmap) {
@@ -1048,7 +1064,9 @@ static void outputAttrmap(
) {
File output;
if (!output.open(options.attrmap, std::ios_base::out | std::ios_base::binary)) {
// LCOV_EXCL_START
fatal("Failed to create \"%s\": %s", output.c_str(options.attrmap), strerror(errno));
// LCOV_EXCL_STOP
}
for (AttrmapEntry const &entry : attrmap) {
@@ -1064,7 +1082,9 @@ static void outputPalmap(
) {
File output;
if (!output.open(options.palmap, std::ios_base::out | std::ios_base::binary)) {
// LCOV_EXCL_START
fatal("Failed to create \"%s\": %s", output.c_str(options.palmap), strerror(errno));
// LCOV_EXCL_STOP
}
for (AttrmapEntry const &entry : attrmap) {
@@ -1092,6 +1112,7 @@ void process() {
// Now, we have all the image's colors in `colors`
// The next step is to order the palette
// LCOV_EXCL_START
if (options.verbosity >= Options::VERB_INTERM) {
fputs("Image colors: [ ", stderr);
for (auto const &slot : colors) {
@@ -1102,6 +1123,7 @@ void process() {
}
fputs("]\n", stderr);
}
// LCOV_EXCL_STOP
// Now, iterate through the tiles, generating proto-palettes as we go
// We do this unconditionally because this performs the image validation (which we want to
@@ -1191,6 +1213,7 @@ continue_visiting_tiles:;
protoPalettes.size(),
protoPalettes.size() != 1 ? "s" : ""
);
// LCOV_EXCL_START
if (options.verbosity >= Options::VERB_INTERM) {
for (auto const &protoPal : protoPalettes) {
fputs("[ ", stderr);
@@ -1200,6 +1223,7 @@ continue_visiting_tiles:;
fputs("]\n", stderr);
}
}
// LCOV_EXCL_STOP
if (options.palSpecType == Options::EMBEDDED) {
generatePalSpec(png);