Testaroo, Real, documented example files for testing

ZIP - Multi-Disk Final Segment

The last segment of a two-part spanned set: its end record says this is disk 1, that the central directory lives on disk 1, and that 2 of the archive's 4 entries are here. The bytes are well-formed - this is not a corrupt file - but a reader given it alone must say so rather than silently reporting a 2-entry archive. The .z01 first segment is deliberately absent, because .z01 is not a format this catalog registers.

File: ZIP · Zip Spanned
Use case: Conversion testingError handling· Conversion set

ZIP - Nested Folders

A ZIP archive: files organised into data/ and docs/ subfolders. Deterministic (fixed member timestamps) and safe to extract anywhere.

File: ZIP · Zip · 4 members
Use case: Conversion testing

ZIP - Per-Entry Comments

Two of three members carry a central-directory file comment and the third carries none. Comments exist only in the central directory, so a reader that walks local headers to build its listing loses them entirely; a rewriter that drops them loses them permanently.

File: ZIP · Zip Metadata · 3 members
Use case: Conversion testingMetadata testing· Conversion set

ZIP - Single-Segment Split Marker (PK00)

A complete, extractable ZIP that begins with the four-byte PK00 marker a splitting writer emits when the archive fitted into a single segment after all. The marker shifts every local header four bytes forward, so a reader that assumes the first local header sits at offset 0 misparses a file it is perfectly capable of reading.

File: ZIP · Zip Spanned · 2 members
Use case: Conversion testingError handling· Conversion set

ZIP - Spanning Signature Marker

A complete ZIP prefixed with the 0x08074B50 spanning signature. That value is also the data descriptor signature, so a reader scanning the byte stream for descriptors finds one before the first local header: a genuine ambiguity in the format, reproduced here in a file that is otherwise entirely ordinary.

File: ZIP · Zip Spanned · 2 members
Use case: Conversion testingError handling· Conversion set

ZIP - Symlink Member

share/current.csv is a symbolic link, stored the Info-ZIP way: the external attributes carry S_IFLNK and the member payload is the 16-byte target path rather than file content. The target is relative and resolves inside the archive, so extracting without symlink support produces a harmless text file instead of a dangling or escaping link.

File: ZIP · Zip Metadata · 3 members
Use case: Conversion testingMetadata testing· Conversion set

ZIP - Unicode Filenames

A ZIP archive, UTF-8 filenames: accents, Japanese, emoji. Deterministic (fixed member timestamps) and safe to extract anywhere.

File: ZIP · Zip · 5 members
Use case: Conversion testing

ZIP - Unix Permission Bits in External Attributes

Unix permissions ride in the top 16 bits of the ZIP external attributes field, and are only meaningful when the version-made-by byte says Unix. This archive carries 0444, 0600, 0664 and a 0750 directory, plus the MS-DOS read-only bit on the 0444 member so the two conventions can be seen disagreeing. Nothing here is marked executable.

File: ZIP · Zip Metadata · 4 members
Use case: Conversion testingMetadata testing· Conversion set

ZIP - Unknown Extra Field ID

An extra field with header ID 0x9901, which is assigned to nothing, sits alongside a recognised extended-timestamp field in a different order in each header. The extra-field area is a length-prefixed chain, so the only correct behaviour is to skip unknown IDs by their declared length and keep walking.

File: ZIP · Zip Metadata · 2 members
Use case: Conversion testingError handling+1· Conversion set

ZIP - UTF-8 Name Flag Set

Member names stored as UTF-8 with general-purpose bit 11 (the language-encoding flag) set, which is the modern, unambiguous way to carry a non-ASCII filename in a ZIP. Its CP437 twin encodes the same archive the legacy way, so a reader's encoding heuristic can be compared against a case where the answer is declared.

File: ZIP · Zip Encoding · 3 members
Use case: Conversion testingEncoding detection· Paired fixture

ZIP - Zero-Length Members

Three empty files stored three ways - stored, deflated, and deflated behind a data descriptor - beside one real member. An empty deflate stream is still two bytes on disk with CRC 0, so readers that treat compressed size 0 as 'no data' and readers that treat CRC 0 as 'not computed' both go wrong here.

File: ZIP · Zip Payload · 4 members
Use case: Conversion testingError handling· Conversion set

ZIP - ZIP64 End of Central Directory Only

Ordinary 32-bit member records terminated by a ZIP64 end-of-central-directory record, its locator, and then a normal 32-bit end record: the belt-and-braces trailer some writers always emit. A reader must find the classic end record first, notice the locator in front of it, and reconcile two directories that agree.

File: ZIP · Zip64 · 2 members
Use case: Conversion testingError handling· Conversion set

ZIP - ZIP64 in Local and Central Headers

Both the local file headers and the central directory carry a ZIP64 extended information extra field (0x0001), with the 32-bit size fields set to 0xFFFFFFFF as the spec requires. The payload is a few hundred bytes: ZIP64 is present because the writer could not seek, not because the data is large, which is precisely the case size-based heuristics miss.

File: ZIP · Zip64 · 2 members
Use case: Conversion testingError handling· Conversion set

ZIP - ZIP64 in the Central Directory Only

The local headers are plain 32-bit while the central directory carries the ZIP64 extra field. This is legal and common: a writer that streams cannot know at local-header time whether it will need ZIP64, so it commits to the wide fields only when it writes the directory.

File: ZIP · Zip64 · 2 members
Use case: Conversion testingError handling· Conversion set

ZIP - ZIP64 Relative Offset Field

A central directory whose ZIP64 extra field carries the relative local-header offset as well as the sizes. The ZIP64 extra is variable length and its members appear in a fixed order, so a reader that assumes a 16-byte or 24-byte block reads the offset out of the wrong slot.

File: ZIP · Zip64 · 2 members
Use case: Conversion testingError handling· Conversion set

ZIP Containing tar, tgz, txz and tbz2

One ZIP holding the same two-member tar in four containers - plain, gzip, xz and bzip2 - so a recursive lister can be checked on four codecs in one pass. The already-compressed members are stored rather than deflated, which is what a competent writer does and what a naive one does not.

File: ZIP · Nested Mixed · 5 members
Use case: Conversion testingCompression testing· Conversion set

ZIP: Config Bundle SAMPLE

Small ZIP SAMPLE (config-bundle.zip) for extractor and listing tests.

File: ZIP · Bundles · 2 members
Use case: Conversion testing

ZIP: Data Bundle SAMPLE

Small ZIP SAMPLE (data-bundle.zip) for extractor and listing tests.

File: ZIP · Bundles · 3 members
Use case: Conversion testing

ZIP: Deep Nested (3 Levels)

Three-level nested ZIP SAMPLE for deep recursive extraction tests.

File: ZIP · Nested
Use case: Conversion testing

ZIP: Docs Bundle SAMPLE

Small ZIP SAMPLE (docs-bundle.zip) for extractor and listing tests.

File: ZIP · Bundles · 2 members
Use case: Conversion testing

ZIP: Empty Dirs SAMPLE

Small ZIP SAMPLE (empty-dirs.zip) for extractor and listing tests.

File: ZIP · Bundles · 2 members
Use case: Conversion testing

ZIP: Html Site Slice SAMPLE

Small ZIP SAMPLE (html-site-slice.zip) for extractor and listing tests.

File: ZIP · Bundles · 3 members
Use case: Conversion testing

ZIP: Mixed Compression SAMPLE

Small ZIP SAMPLE (mixed-compression.zip) for extractor and listing tests.

File: ZIP · Bundles · 3 members
Use case: Conversion testing

ZIP: Nested Archive SAMPLE

ZIP containing another ZIP plus text, for recursive extractors.

File: ZIP · Nested
Use case: Conversion testing

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