Add test cases for tie-breaking

Cargo.lock

@@ -6,6 +6,15 @@ version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f26201604c87b1e01bd3d98f8d5d9a8fcbb815e8cedb41ffccbeb4bf593a35fe"
 
+[[package]]
+name = "aho-corasick"
+version = "0.7.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1e37cfd5e7657ada45f742d6e99ca5788580b5c529dc78faf11ece6dc702656f"
+dependencies = [
+ "memchr",
+]
+
 [[package]]
 name = "assert_cmd"
 version = "1.0.5"
@@ -222,6 +231,15 @@ dependencies = [
  "miniz_oxide",
 ]
 
+[[package]]
+name = "float-cmp"
+version = "0.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e1267f4ac4f343772758f7b1bdcbe767c218bbab93bb432acbf5162bbf85a6c4"
+dependencies = [
+ "num-traits",
+]
+
 [[package]]
 name = "generic-array"
 version = "0.14.4"
@@ -363,6 +381,12 @@ dependencies = [
  "autocfg",
 ]
 
+[[package]]
+name = "normalize-line-endings"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "61807f77802ff30975e01f4f071c8ba10c022052f98b3294119f3e615d13e5be"
+
 [[package]]
 name = "num-bigint"
 version = "0.4.0"
@@ -429,6 +453,7 @@ dependencies = [
  "num-rational",
  "num-traits",
  "paste",
+ "predicates",
  "rug",
  "sha2",
  "wasm-bindgen",
@@ -454,7 +479,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f49cfaf7fdaa3bfacc6fa3e7054e65148878354a5cfddcf661df4c851f8021df"
 dependencies = [
  "difference",
+ "float-cmp",
+ "normalize-line-endings",
  "predicates-core",
+ "regex",
 ]
 
 [[package]]
@@ -536,6 +564,17 @@ version = "0.6.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "34cf66eb183df1c5876e2dcf6b13d57340741e8dc255b48e40a26de954d06ae7"
 
+[[package]]
+name = "regex"
+version = "1.5.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d07a8629359eb56f1e2fb1652bb04212c072a87ba68546a04065d525673ac461"
+dependencies = [
+ "aho-corasick",
+ "memchr",
+ "regex-syntax",
+]
+
 [[package]]
 name = "regex-automata"
 version = "0.1.9"
@@ -545,6 +584,12 @@ dependencies = [
  "byteorder",
 ]
 
+[[package]]
+name = "regex-syntax"
+version = "0.6.25"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f497285884f3fcff424ffc933e56d7cbca511def0c9831a7f9b5f6153e3cc89b"
+
 [[package]]
 name = "rug"
 version = "1.12.0"

Cargo.toml

@@ -12,6 +12,7 @@ derive_more = "0.99.14"
 git-version = "0.3.4"
 ibig = "0.3.2"
 itertools = "0.10.1"
+predicates = "1.0.8"
 num-traits = "0.2"
 sha2 = "0.9.5"
 wasm-bindgen = "0.2.74"

tests/cli.rs

@@ -15,9 +15,8 @@
  *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
-use assert_cmd::prelude::*;
-
-use std::process::Command;
+use assert_cmd::Command;
+use predicates::prelude::*;
 
 #[test]
 fn cli_ers97() {
@@ -25,3 +24,37 @@ fn cli_ers97() {
 		.args(&["stv", "tests/data/ers97.blt", "--numbers", "fixed", "--decimals", "5", "--round-tvs", "2", "--round-weights", "2", "--round-votes", "2", "--round-quota", "2", "--quota", "droop_exact", "--quota-mode", "ers97", "--surplus", "eg", "--transferable-only", "--exclusion", "by_value"])
 		.assert().success();
 }
+
+#[test]
+fn cli_meekm_wigm_ties_prompt() {
+	Command::cargo_bin("opentally").expect("Cargo Error")
+		.args(&["stv", "tests/data/meekm.blt", "--ties", "prompt"])
+		.write_stdin("1")
+		.assert().stdout(predicate::str::contains("Charlotte is excluded"));
+	
+	Command::cargo_bin("opentally").expect("Cargo Error")
+		.args(&["stv", "tests/data/meekm.blt", "--ties", "prompt"])
+		.write_stdin("2")
+		.assert().stdout(predicate::str::contains("Donald is excluded"));
+}
+
+#[test]
+fn cli_meekm_wigm_ties_forwards() {
+	Command::cargo_bin("opentally").expect("Cargo Error")
+		.args(&["stv", "tests/data/meekm.blt", "--ties", "forwards", "prompt"])
+		.assert().stdout(predicate::str::contains("Charlotte is excluded"));
+}
+
+#[test]
+fn cli_meekm_wigm_ties_backwards() {
+	Command::cargo_bin("opentally").expect("Cargo Error")
+		.args(&["stv", "tests/data/meekm.blt", "--ties", "backwards", "prompt"])
+		.assert().stdout(predicate::str::contains("Charlotte is excluded"));
+}
+
+#[test]
+fn cli_meekm_wigm_ties_random() {
+	Command::cargo_bin("opentally").expect("Cargo Error")
+		.args(&["stv", "tests/data/meekm.blt", "--ties", "random", "--random-seed", "foo"])
+		.assert().stdout(predicate::str::contains("Donald is excluded"));
+}

tests/data/meekm.blt

@@ -0,0 +1,14 @@
+4 2
+-2
+3 1 3 4 0
+4 1 3 2 0
+2 4 1 3 0
+1 2 0
+2 2 4 3 1 0
+1 3 4 2 0
+0
+"Adam"
+"Basil"
+"Charlotte"
+"Donald"
+"Title"