Add more tests for build metadata.

Author: omasanori

src/libextra/semver.rs

@@ -318,6 +318,8 @@ fn test_parse() {
 fn test_eq() {
     assert_eq!(parse("1.2.3"), parse("1.2.3"));
     assert_eq!(parse("1.2.3-alpha1"), parse("1.2.3-alpha1"));
+    assert_eq!(parse("1.2.3+build.42"), parse("1.2.3+build.42"));
+    assert_eq!(parse("1.2.3-alpha1+42"), parse("1.2.3-alpha1+42"));
 }
 
 #[test]
@@ -326,6 +328,7 @@ fn test_ne() {
     assert!(parse("0.0.0")       != parse("0.1.0"));
     assert!(parse("0.0.0")       != parse("1.0.0"));
     assert!(parse("1.2.3-alpha") != parse("1.2.3-beta"));
+    assert!(parse("1.2.3+23")    != parse("1.2.3+42"));
 }
 
 #[test]
@@ -336,6 +339,7 @@ fn test_lt() {
     assert!(parse("1.2.3-alpha1") < parse("1.2.3"));
     assert!(parse("1.2.3-alpha1") < parse("1.2.3-alpha2"));
     assert!(!(parse("1.2.3-alpha2") < parse("1.2.3-alpha2")));
+    assert!(!(parse("1.2.3+23")     < parse("1.2.3+42")));
 }
 
 #[test]
@@ -345,6 +349,7 @@ fn test_le() {
     assert!(parse("1.2.0")        <= parse("1.2.3-alpha2"));
     assert!(parse("1.2.3-alpha1") <= parse("1.2.3-alpha2"));
     assert!(parse("1.2.3-alpha2") <= parse("1.2.3-alpha2"));
+    assert!(parse("1.2.3+23")     <= parse("1.2.3+42"));
 }
 
 #[test]
@@ -355,6 +360,7 @@ fn test_gt() {
     assert!(parse("1.2.3-alpha2") > parse("1.2.3-alpha1"));
     assert!(parse("1.2.3")        > parse("1.2.3-alpha2"));
     assert!(!(parse("1.2.3-alpha2") > parse("1.2.3-alpha2")));
+    assert!(!(parse("1.2.3+23")     > parse("1.2.3+42")));
 }
 
 #[test]
@@ -364,6 +370,7 @@ fn test_ge() {
     assert!(parse("1.2.3-alpha2") >= parse("1.2.0"));
     assert!(parse("1.2.3-alpha2") >= parse("1.2.3-alpha1"));
     assert!(parse("1.2.3-alpha2") >= parse("1.2.3-alpha2"));
+    assert!(parse("1.2.3+23")     >= parse("1.2.3+42"));
 }
 
 #[test]