Add tests for maven.vim file

test/maven-test-files/maven-java-project/module1/pom.xml

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+

test/maven-test-files/maven-java-project/module2/pom.xml

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+

test/test_maven_build_classpath_command.vader

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+Before:
+  Save $PATH
+  Save $PATHEXT
+
+  let $PATHEXT = '.'
+
+  call ale#test#SetDirectory('/testplugin/test')
+  runtime ale_linters/java/javac.vim
+  let g:expected_wrapper = ''
+  if has('unix')
+    let g:expected_wrapper = 'mvnw'
+  else
+    let g:expected_wrapper = 'mvnw.cmd'
+  endif
+
+After:
+  Restore
+
+  unlet! g:expected_wrapper
+
+  call ale#test#RestoreDirectory()
+  call ale#linter#Reset()
+
+Execute(Should use 'mvnw' in classpath command if available):
+  call ale#test#SetFilename('maven-test-files/maven-java-project/module1/src/main/java/dummy1.java')
+
+  AssertEqual
+  \ ale#path#CdString(ale#path#Simplify(g:dir . '/maven-test-files/maven-java-project/module1'))
+  \ . ale#path#Simplify(g:dir . '/maven-test-files/maven-java-project/module1/' . g:expected_wrapper)
+  \ . ' dependency:build-classpath',
+  \ ale#maven#BuildClasspathCommand(bufnr(''))
+
+Execute(Should use 'mvn' in classpath command if it is executable and 'mvnw' is unavailable):
+  call ale#test#SetFilename('maven-test-files/maven-java-project/module2/src/main/java/dummy2.java')
+  let $PATH .= (has('win32') ? ';' : ':')
+  \ . ale#path#Simplify(g:dir . '/maven-test-files')
+
+  AssertEqual
+  \ ale#path#CdString(ale#path#Simplify(g:dir . '/maven-test-files/maven-java-project/module2'))
+  \ . 'mvn dependency:build-classpath',
+  \ ale#maven#BuildClasspathCommand(bufnr(''))
+
+Execute(Should return empty string if maven cannot be executed):
+  call ale#test#SetFilename('maven-test-files/non-maven-project/src/main/java/dummy.java')
+
+  AssertEqual
+  \ '',
+  \ ale#maven#BuildClasspathCommand(bufnr(''))

test/test_maven_find_executable.vader

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+Before:
+  Save $PATH
+  Save $PATHEXT
+
+  " Count the maven executable without .exe as executable on Windows
+  let $PATHEXT = '.'
+
+  call ale#test#SetDirectory('/testplugin/test')
+  runtime ale_linters/java/javac.vim
+  let g:expected_wrapper = ''
+  if has('unix')
+    let g:expected_wrapper = 'mvnw'
+  else
+    let g:expected_wrapper = 'mvnw.cmd'
+  endif
+
+After:
+  Restore
+
+  unlet! g:expected_wrapper
+
+  call ale#test#RestoreDirectory()
+  call ale#linter#Reset()
+
+Execute(Should return 'mvnw' if found in parent directory):
+  call ale#test#SetFilename('maven-test-files/maven-java-project/module1/src/main/java/dummy1.java')
+
+  AssertEqual
+  \ ale#path#Simplify(g:dir . '/maven-test-files/maven-java-project/module1/' . g:expected_wrapper),
+  \ ale#maven#FindExecutable(bufnr(''))
+
+Execute(Should return 'mvn' if 'mvnw' not found in parent directory):
+  call ale#test#SetFilename('maven-test-files/maven-java-project/module2/src/main/java/dummy2.java')
+  let $PATH .= (has('win32') ? ';' : ':')
+  \ . ale#path#Simplify(g:dir . '/maven-test-files')
+
+  AssertEqual
+  \ 'mvn',
+  \ ale#maven#FindExecutable(bufnr(''))
+
+Execute(Should return empty string if 'mvnw' not in parent directory and mvn not in path):
+  call ale#test#SetFilename('mvn-test-files/java-maven-project/module2/src/main/java/dummy2.java')
+
+  AssertEqual
+  \ '',
+  \ ale#gradle#FindExecutable(bufnr(''))

test/test_maven_find_project_root.vader

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+Before:
+  call ale#test#SetDirectory('/testplugin/test')
+  runtime ale_linters/kotlin/javac.vim
+
+After:
+  call ale#test#RestoreDirectory()
+  call ale#linter#Reset()
+
+Execute(Should return directory for 'mvnw' if found in parent directory):
+  call ale#test#SetFilename('maven-test-files/maven-java-project/module1/src/main/java/dummy1.java')
+
+  AssertEqual
+  \ ale#path#Simplify(g:dir . '/maven-test-files/maven-java-project/module1'),
+  \ ale#maven#FindProjectRoot(bufnr(''))
+
+Execute(Should return directory for 'pom.xml' if found in parent directory):
+  call ale#test#SetFilename('maven-test-files/maven-java-project/module2/src/main/java/dummy2.java')
+
+  AssertEqual
+  \ ale#path#Simplify(g:dir . '/maven-test-files/maven-java-project/module2'),
+  \ ale#maven#FindProjectRoot(bufnr(''))
+
+Execute(Should return empty string if maven files are not found in parent directory):
+  call ale#test#SetFilename('maven-test-files/non-maven-project/src/main/java/dummy.java')
+
+  AssertEqual
+  \ '',
+  \ ale#maven#FindProjectRoot(bufnr(''))