(#924): Remove the test-generator dependency

The test-generator crate seems unmaintained since about two years ago,
and it is pulling in old versions of crates like syn (which takes a
long time to compile).

We now enumerate the test files by hand in the tests/src/*.rs sources;
this is made a bit easier with some helper macros.

Fixes https://gitlab.gnome.org/GNOME/librsvg/-/issues/924

Part-of: <https://gitlab.gnome.org/GNOME/librsvg/-/merge_requests/776>

2 files changed, 77 insertions, 132 deletions

diff --git a/Cargo.lock b/Cargo.lock
index dbd032fe..705ec8d0 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -209,7 +209,7 @@ dependencies = [
  "js-sys",
  "num-integer",
  "num-traits",
- "time 0.1.44",
+ "time 0.1.45",
  "wasm-bindgen",
  "winapi",
 ]
@@ -257,9 +257,9 @@ checksum = "0177313f9f02afc995627906bbd8967e2be069f5261954222dac78290c2b9014"
 dependencies = [
  "heck",
  "proc-macro-error",
- "proc-macro2 1.0.47",
- "quote 1.0.21",
- "syn 1.0.103",
+ "proc-macro2",
+ "quote",
+ "syn",
 ]
 
 [[package]]
@@ -404,10 +404,10 @@ dependencies = [
  "itoa 0.4.8",
  "matches",
  "phf",
- "proc-macro2 1.0.47",
- "quote 1.0.21",
+ "proc-macro2",
+ "quote",
  "smallvec",
- "syn 1.0.103",
+ "syn",
 ]
 
 [[package]]
@@ -416,8 +416,8 @@ version = "0.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "dfae75de57f2b2e85e8768c3ea840fd159c8f33e2b6522c7835b7abac81be16e"
 dependencies = [
- "quote 1.0.21",
- "syn 1.0.103",
+ "quote",
+ "syn",
 ]
 
 [[package]]
@@ -463,10 +463,10 @@ dependencies = [
  "cc",
  "codespan-reporting",
  "once_cell",
- "proc-macro2 1.0.47",
- "quote 1.0.21",
+ "proc-macro2",
+ "quote",
  "scratch",
- "syn 1.0.103",
+ "syn",
 ]
 
 [[package]]
@@ -481,9 +481,9 @@ version = "1.0.82"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a08a6e2fcc370a089ad3b4aaf54db3b1b4cee38ddabce5896b33eb693275f470"
 dependencies = [
- "proc-macro2 1.0.47",
- "quote 1.0.21",
- "syn 1.0.103",
+ "proc-macro2",
+ "quote",
+ "syn",
 ]
 
 [[package]]
@@ -502,10 +502,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4fb810d30a7c1953f91334de7244731fc3f3c10d7fe163338a35b9f640960321"
 dependencies = [
  "convert_case",
- "proc-macro2 1.0.47",
- "quote 1.0.21",
+ "proc-macro2",
+ "quote",
  "rustc_version 0.4.0",
- "syn 1.0.103",
+ "syn",
 ]
 
 [[package]]
@@ -732,9 +732,9 @@ version = "0.3.25"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bdfb8ce053d86b91919aad980c220b1fb8401a9394410e1c289ed7e66b61835d"
 dependencies = [
- "proc-macro2 1.0.47",
- "quote 1.0.21",
- "syn 1.0.103",
+ "proc-macro2",
+ "quote",
+ "syn",
 ]
 
 [[package]]
@@ -768,9 +768,9 @@ dependencies = [
 
 [[package]]
 name = "gdk-pixbuf"
-version = "0.16.3"
+version = "0.16.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0ba3e42776d1466938add08211734738d5c76e863a25b7a8064c4433a74a1a26"
+checksum = "d3094f2b8578136d1929cade4e0fff82f573521b579e96cfc24af2458431f176"
 dependencies = [
  "bitflags",
  "gdk-pixbuf-sys",
@@ -849,9 +849,9 @@ dependencies = [
 
 [[package]]
 name = "glib"
-version = "0.16.3"
+version = "0.16.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "50feee2f1e73be50e6634c901bfced69a0937c5e4e4673067ade85e093fa9bd7"
+checksum = "d5204a4217749b385cefbfb7bf3a2fcde83e4ce6d0945f64440a1f5bd4010305"
 dependencies = [
  "bitflags",
  "futures-channel",
@@ -879,9 +879,9 @@ dependencies = [
  "heck",
  "proc-macro-crate",
  "proc-macro-error",
- "proc-macro2 1.0.47",
- "quote 1.0.21",
- "syn 1.0.103",
+ "proc-macro2",
+ "quote",
+ "syn",
 ]
 
 [[package]]
@@ -895,12 +895,6 @@ dependencies = [
 ]
 
 [[package]]
-name = "glob"
-version = "0.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9b919933a397b79c37e33b77bb2aa3dc8eb6e165ad809e58ff75bc7db2e34574"
-
-[[package]]
 name = "gobject-sys"
 version = "0.16.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -986,9 +980,9 @@ dependencies = [
 
 [[package]]
 name = "io-lifetimes"
-version = "1.0.2"
+version = "1.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e394faa0efb47f9f227f1cd89978f854542b318a6f64fa695489c9c993056656"
+checksum = "46112a93252b123d31a119a8d1a1ac19deac4fac6e0e8b0df58f0d4e5870e63c"
 dependencies = [
  "libc",
  "windows-sys",
@@ -1109,7 +1103,6 @@ dependencies = [
  "string_cache",
  "system-deps",
  "tempfile",
- "test-generator",
  "tinyvec",
  "url",
  "xml5ever",
@@ -1276,9 +1269,9 @@ version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "01fcc0b8149b4632adc89ac3b7b31a12fb6099a0317a4eb2ebff574ef7de7218"
 dependencies = [
- "proc-macro2 1.0.47",
- "quote 1.0.21",
- "syn 1.0.103",
+ "proc-macro2",
+ "quote",
+ "syn",
 ]
 
 [[package]]
@@ -1533,9 +1526,9 @@ dependencies = [
  "phf_generator 0.8.0",
  "phf_shared 0.8.0",
  "proc-macro-hack",
- "proc-macro2 1.0.47",
- "quote 1.0.21",
- "syn 1.0.103",
+ "proc-macro2",
+ "quote",
+ "syn",
 ]
 
 [[package]]
@@ -1680,9 +1673,9 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "da25490ff9892aab3fcf7c36f08cfb902dd3e71ca0f9f9517bea02a73a5ce38c"
 dependencies = [
  "proc-macro-error-attr",
- "proc-macro2 1.0.47",
- "quote 1.0.21",
- "syn 1.0.103",
+ "proc-macro2",
+ "quote",
+ "syn",
  "version_check",
 ]
 
@@ -1692,8 +1685,8 @@ version = "1.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a1be40180e52ecc98ad80b184934baf3d0d29f979574e439af5a55274b35f869"
 dependencies = [
- "proc-macro2 1.0.47",
- "quote 1.0.21",
+ "proc-macro2",
+ "quote",
  "version_check",
 ]
 
@@ -1705,15 +1698,6 @@ checksum = "dbf0c48bc1d91375ae5c3cd81e3722dff1abcf81a30960240640d223f59fe0e5"
 
 [[package]]
 name = "proc-macro2"
-version = "0.4.30"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cf3d2011ab5c909338f7887f4fc896d35932e29146c12c8d01da6b22a80ba759"
-dependencies = [
- "unicode-xid",
-]
-
-[[package]]
-name = "proc-macro2"
 version = "1.0.47"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5ea3d908b0e36316caf9e9e2c4625cdde190a7e6f440d794667ed17a1855e725"
@@ -1755,20 +1739,11 @@ checksum = "a993555f31e5a609f617c12db6250dedcac1b0a85076912c436e6fc9b2c8e6a3"
 
 [[package]]
 name = "quote"
-version = "0.6.13"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6ce23b6b870e8f94f81fb0a363d65d86675884b34a09043c81e5562f11c1f8e1"
-dependencies = [
- "proc-macro2 0.4.30",
-]
-
-[[package]]
-name = "quote"
 version = "1.0.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bbe448f377a7d6961e30f5955f9b8d106c3f5e449d493ee1b125c1d43c2b5179"
 dependencies = [
- "proc-macro2 1.0.47",
+ "proc-macro2",
 ]
 
 [[package]]
@@ -2067,9 +2042,9 @@ checksum = "388a1df253eca08550bef6c72392cfe7c30914bf41df5269b68cbd6ff8f570a3"
 
 [[package]]
 name = "serde"
-version = "1.0.147"
+version = "1.0.148"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d193d69bae983fc11a79df82342761dfbf28a99fc8d203dca4c3c1b590948965"
+checksum = "e53f64bb4ba0191d6d0676e1b141ca55047d83b74f5607e6d8eb88126c52c2dc"
 dependencies = [
  "serde_derive",
 ]
@@ -2086,13 +2061,13 @@ dependencies = [
 
 [[package]]
 name = "serde_derive"
-version = "1.0.147"
+version = "1.0.148"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4f1d362ca8fc9c3e3a7484440752472d68a6caa98f1ab81d99b5dfe517cec852"
+checksum = "a55492425aa53521babf6137309e7d34c20bbfbbfcfe2c7f3a047fd1f6b92c0c"
 dependencies = [
- "proc-macro2 1.0.47",
- "quote 1.0.21",
- "syn 1.0.103",
+ "proc-macro2",
+ "quote",
+ "syn",
 ]
 
 [[package]]
@@ -2200,11 +2175,11 @@ version = "0.5.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c87a60a40fccc84bef0652345bbbbbe20a605bf5d0ce81719fc476f5c03b50ef"
 dependencies = [
- "proc-macro2 1.0.47",
- "quote 1.0.21",
+ "proc-macro2",
+ "quote",
  "serde",
  "serde_derive",
- "syn 1.0.103",
+ "syn",
 ]
 
 [[package]]
@@ -2214,13 +2189,13 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "58fa5ff6ad0d98d1ffa8cb115892b6e69d67799f6763e162a1c9db421dc22e11"
 dependencies = [
  "base-x",
- "proc-macro2 1.0.47",
- "quote 1.0.21",
+ "proc-macro2",
+ "quote",
  "serde",
  "serde_derive",
  "serde_json",
  "sha1",
- "syn 1.0.103",
+ "syn",
 ]
 
 [[package]]
@@ -2251,8 +2226,8 @@ checksum = "6bb30289b722be4ff74a408c3cc27edeaad656e06cb1fe8fa9231fa59c728988"
 dependencies = [
  "phf_generator 0.10.0",
  "phf_shared 0.10.0",
- "proc-macro2 1.0.47",
- "quote 1.0.21",
+ "proc-macro2",
+ "quote",
 ]
 
 [[package]]
@@ -2263,23 +2238,12 @@ checksum = "73473c0e59e6d5812c5dfe2a064a6444949f089e20eec9a2e5506596494e4623"
 
 [[package]]
 name = "syn"
-version = "0.15.44"
+version = "1.0.104"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9ca4b3b69a77cbe1ffc9e198781b7acb0c7365a883670e8f1c1bc66fba79a5c5"
+checksum = "4ae548ec36cf198c0ef7710d3c230987c2d6d7bd98ad6edc0274462724c585ce"
 dependencies = [
- "proc-macro2 0.4.30",
- "quote 0.6.13",
- "unicode-xid",
-]
-
-[[package]]
-name = "syn"
-version = "1.0.103"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a864042229133ada95abf3b54fdc62ef5ccabe9515b64717bcb9a1919e59445d"
-dependencies = [
- "proc-macro2 1.0.47",
- "quote 1.0.21",
+ "proc-macro2",
+ "quote",
  "unicode-ident",
 ]
 
@@ -2337,18 +2301,6 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "95059e91184749cb66be6dc994f67f182b6d897cb3df74a5bf66b5e709295fd8"
 
 [[package]]
-name = "test-generator"
-version = "0.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ea97be90349ab3574f6e74d1566e1c5dd3a4bc74b89f4af4cc10ca010af103c0"
-dependencies = [
- "glob",
- "proc-macro2 0.4.30",
- "quote 0.6.13",
- "syn 0.15.44",
-]
-
-[[package]]
 name = "textwrap"
 version = "0.11.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -2372,16 +2324,16 @@ version = "1.0.37"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "982d17546b47146b28f7c22e3d08465f6b8903d0ea13c1660d9d84a6e7adcdbb"
 dependencies = [
- "proc-macro2 1.0.47",
- "quote 1.0.21",
- "syn 1.0.103",
+ "proc-macro2",
+ "quote",
+ "syn",
 ]
 
 [[package]]
 name = "time"
-version = "0.1.44"
+version = "0.1.45"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6db9e6914ab8b1ae1c260a4ae7a49b6c5611b40328a735b21862567685e73255"
+checksum = "1b797afad3f312d1c66a56d11d0316f916356d11bd158fbc6ca6389ff6bf805a"
 dependencies = [
  "libc",
  "wasi 0.10.0+wasi-snapshot-preview1",
@@ -2420,10 +2372,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "fd3c141a1b43194f3f56a1411225df8646c55781d5f26db825b3d98507eb482f"
 dependencies = [
  "proc-macro-hack",
- "proc-macro2 1.0.47",
- "quote 1.0.21",
+ "proc-macro2",
+ "quote",
  "standback",
- "syn 1.0.103",
+ "syn",
 ]
 
 [[package]]
@@ -2494,12 +2446,6 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c0edd1e5b14653f783770bce4a4dabb4a5108a5370a5f5d8cfe8710c361f6c8b"
 
 [[package]]
-name = "unicode-xid"
-version = "0.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fc72304796d0818e357ead4e000d19c9c174ab23dc11093ac919054d20a6a7fc"
-
-[[package]]
 name = "url"
 version = "2.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -2585,9 +2531,9 @@ dependencies = [
  "bumpalo",
  "log",
  "once_cell",
- "proc-macro2 1.0.47",
- "quote 1.0.21",
- "syn 1.0.103",
+ "proc-macro2",
+ "quote",
+ "syn",
  "wasm-bindgen-shared",
 ]
 
@@ -2597,7 +2543,7 @@ version = "0.2.83"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "052be0f94026e6cbc75cdefc9bae13fd6052cdcaf532fa6c45e7ae33a1e6c810"
 dependencies = [
- "quote 1.0.21",
+ "quote",
  "wasm-bindgen-macro-support",
 ]
 
@@ -2607,9 +2553,9 @@ version = "0.2.83"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "07bc0c051dc5f23e307b13285f9d75df86bfdf816c5721e573dec1f9b8aa193c"
 dependencies = [
- "proc-macro2 1.0.47",
- "quote 1.0.21",
- "syn 1.0.103",
+ "proc-macro2",
+ "quote",
+ "syn",
  "wasm-bindgen-backend",
  "wasm-bindgen-shared",
 ]
@@ -2743,7 +2689,7 @@ dependencies = [
  "log",
  "mac",
  "markup5ever",
- "time 0.1.44",
+ "time 0.1.45",
 ]
 
 [[package]]
diff --git a/Cargo.toml b/Cargo.toml
index ed4bf8de..360f9937 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -103,7 +103,6 @@ proptest = "1.0.0"
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
 tempfile = "3"
-test-generator = "0.3"
 yeslogic-fontconfig-sys = "4.0.1"
 
 [build-dependencies]