add tests

Author: fistach

src/test/resources/features/use_major_version.feature

@@ -0,0 +1,36 @@
+Feature: Use Version Giving Only The Major Version Number
+
+	Background:
+		Given the internet is reachable
+		And an initialised environment
+
+	Scenario: Use a grails version that is installed giving only major version
+		Given the candidate "grails" version "1.3.0" is already installed and default
+		And the candidate "grails" version "2.1.0" is already installed but not default
+		And the system is bootstrapped
+		When I enter "sdk use grails 2"
+		Then I see "Using grails version 2.1.0 in this shell."
+		Then the candidate "grails" version "2.1.0" should be in use
+
+	Scenario: Use a java version that is installed giving only major version
+		Given the candidate "java" version "21.0.3-blah" is already installed and default
+		And the candidate "java" version "17.0.11-graal" is already installed but not default
+		And the system is bootstrapped
+		When I enter "sdk use java 17"
+		Then I see "Using java version 17.0.11-graal in this shell."
+		Then the candidate "java" version "17.0.11-graal" should be in use
+
+	Scenario: Fail to use a major version because there are multiple matching versions
+		Given the candidate "grails" version "1.3.0" is already installed and default
+		And the candidate "grails" version "2.1.0" is already installed but not default
+		And the candidate "grails" version "2.3.0" is already installed but not default
+		And the system is bootstrapped
+		When I enter "sdk use grails 2"
+		Then I see "Stop! Cannot decide which version to use."
+
+	Scenario: Fail to use a major version because there is no matching version
+		Given the candidate "grails" version "1.3.0" is already installed and default
+		And the system is bootstrapped
+		When I enter "sdk use grails 2"
+		Then I see "Stop! No matching version found."
+