From 24979640a880a054364b4465443c0532bce3d4ff Mon Sep 17 00:00:00 2001
From: Diggory Hardy <diggory.hardy@unibas.ch>
Date: Wed, 3 Dec 2014 11:17:20 +0100
Subject: [PATCH] Add unit test for extraction of gzip files

---
 tests/corrupt-file.gz | Bin 0 -> 7128 bytes
 tests/good-file.gz    | Bin 0 -> 6766 bytes
 tests/good-file.txt   | 733 ++++++++++++++++++++++++++++++++++++++++++
 tests/gunzip.rs       |  26 ++
 4 files changed, 759 insertions(+)
 create mode 100644 tests/corrupt-file.gz
 create mode 100644 tests/good-file.gz
 create mode 100644 tests/good-file.txt
 create mode 100644 tests/gunzip.rs

diff --git a/tests/corrupt-file.gz b/tests/corrupt-file.gz
new file mode 100644
index 0000000000000000000000000000000000000000..159333b032751969263eeb152e7e94782ab2cd39
GIT binary patch
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diff --git a/tests/good-file.gz b/tests/good-file.gz
new file mode 100644
index 0000000000000000000000000000000000000000..f968689cce01efba445a1d33eb4a21aabf551981
GIT binary patch
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literal 0
HcmV?d00001

diff --git a/tests/good-file.txt b/tests/good-file.txt
new file mode 100644
index 000000000..ee39ac53d
--- /dev/null
+++ b/tests/good-file.txt
@@ -0,0 +1,733 @@
+##	##
+timestep	simulated EIR	patent hosts
+0	0.136402	16855
+1	0.146872	18564
+2	0.150157	20334
+3	0.146358	22159
+4	0.136315	23655
+5	0.122354	24848
+6	0.104753	25887
+7	0.084439	26770
+8	0.06417	27238
+9	0.0450397	27349
+10	0.0295473	27274
+11	0.0184662	26909
+12	0.0110032	26324
+13	0.00634348	25513
+14	0.0036144	24469
+15	0.00208133	23383
+16	0.00122468	22345
+17	0.000752514	21342
+18	0.000545333	20416
+19	0.000546139	19657
+20	0.00054572	18806
+21	0.000545757	18015
+22	0.000545898	17349
+23	0.000546719	16594
+24	0.000547353	15955
+25	0.000547944	15374
+26	0.000547606	14765
+27	0.000594773	14212
+28	0.000969163	13677
+29	0.00168295	13180
+30	0.003059	12760
+31	0.00571599	12313
+32	0.0107918	11896
+33	0.0201943	11512
+34	0.0368013	11340
+35	0.0640629	11323
+36	0.104447	11769
+37	0.157207	12728
+38	0.216682	14261
+39	0.271159	16491
+40	0.303552	19274
+41	0.303678	22157
+42	0.271945	24875
+43	0.215445	27027
+44	0.154503	28690
+45	0.100717	30046
+46	0.0600343	30602
+47	0.0328576	30709
+48	0.016964	30315
+49	0.00841526	29310
+50	0.0040958	28058
+51	0.0019953	26662
+52	0.000986531	25259
+53	0.000545786	24049
+54	0.000546405	22966
+55	0.000546036	21933
+56	0.00054427	20953
+57	0.000542769	20057
+58	0.000541566	19304
+59	0.000541822	18477
+60	0.000541643	17695
+61	0.000541989	17002
+62	0.000769298	16391
+63	0.00150811	15805
+64	0.00295097	15172
+65	0.00566197	14690
+66	0.0105243	14206
+67	0.0186965	13791
+68	0.0313363	13470
+69	0.0490605	13377
+70	0.0711679	13631
+71	0.0953625	14209
+72	0.118026	15277
+73	0.134612	16760
+74	0.144311	18339
+75	0.146328	20124
+76	0.142936	21803
+77	0.134029	23435
+78	0.120562	24854
+79	0.103157	25880
+80	0.0834054	26597
+81	0.0632474	27226
+82	0.0447785	27294
+83	0.0295654	27169
+84	0.0184081	26803
+85	0.0109489	26265
+86	0.00631234	25375
+87	0.00359978	24306
+88	0.00206967	23260
+89	0.00122197	22225
+90	0.000751031	21277
+91	0.000544507	20295
+92	0.000543897	19417
+93	0.000543483	18623
+94	0.000542926	17837
+95	0.000542685	17070
+96	0.000542387	16424
+97	0.000541194	15838
+98	0.000540427	15177
+99	0.000540774	14608
+100	0.000588312	14066
+101	0.000959183	13499
+102	0.00166774	12979
+103	0.00303278	12545
+104	0.00567457	12067
+105	0.0107272	11712
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diff --git a/tests/gunzip.rs b/tests/gunzip.rs
new file mode 100644
index 000000000..56c29f74c
--- /dev/null
+++ b/tests/gunzip.rs
@@ -0,0 +1,26 @@
+extern crate flate2;
+
+use std::vec::Vec;
+use std::io::{IoErrorKind,IoResult, File};
+use flate2::reader::GzDecoder;
+
+// test extraction of a gzipped file
+#[test]
+fn test_extract_success(){
+    let content = extract_file(&Path::new("tests/good-file.gz")).unwrap();
+    let expected = File::open(&Path::new("tests/good-file.txt")).read_to_end().unwrap();
+    assert!(content == expected);
+}
+
+// test extraction fails on a corrupt file
+#[test]
+fn test_extract_failure(){
+    let result = extract_file(&Path::new("tests/corrupt-file.gz"));
+    assert!(result.is_err());
+    assert!(result.err().unwrap().kind == IoErrorKind::InvalidInput);
+}
+
+// Tries to extract path into memory (assuming a .gz file).
+fn extract_file(path_compressed: &Path) -> IoResult<Vec<u8>>{
+    GzDecoder::new(File::open(path_compressed)).read_to_end()
+}