Fix #3: ensure gitversion produces reliable versioning info across all branches

tests/test_gitversion.sh

@@ -0,0 +1,61 @@
+#!/bin/bash
+
+BASEDIR=$(pwd)
+
+function die
+{
+    echo "$1"
+    exit 1
+}
+
+function shunittest_gitversion_use_correct_tag
+{
+    tdir=$(mktemp -d)
+    trap "rm -fr ${tdir}" EXIT
+    cd ${tdir}
+    git init .
+    touch README
+    git add README
+    git commit -m 'test' README
+    git tag -a -m 1.0-0 build,1.0,0
+    ${BASEDIR}/gitversion.sh > version.sh
+    . version.sh
+    [[ "$MAJOR" == "1.0" ]] || die "MAJOR should be 1.0, not $MAJOR"
+    [[ "$BUILD" == "0" ]] || die "BUILD should be 0, not $BUILD"
+
+    git checkout -b branch1
+    echo 'This is a meaningless change' > README
+    git commit -m 'edited readme' README
+    git tag -a -m 2.0dev-0 build,2.0dev,0
+    ${BASEDIR}/gitversion.sh > version.sh
+    . version.sh
+    [[ "$MAJOR" == "2.0dev" ]] || die "MAJOR should be 2.0dev, not $MAJOR"
+    [[ "$BUILD" == "0" ]] || die "BUILD should be 0, not $BUILD"
+    
+    git checkout master
+    ${BASEDIR}/gitversion.sh > version.sh
+    . version.sh
+    [[ "$MAJOR" == "1.0" ]] || die "MAJOR should be 1.0, not $MAJOR"
+    [[ "$BUILD" == "0" ]] || die "BUILD should be 0, not $BUILD"
+}
+
+function shunittest_gitversion_correct_rebuilding
+{
+    tdir=$(mktemp -d)
+    trap "rm -fr ${tdir}" EXIT
+    cd ${tdir}
+    git init .
+    touch README
+    git add README
+    git commit -m 'test' README
+    git tag -a -m 1.0-0 build,1.0,0
+    ${BASEDIR}/gitversion.sh > version.sh
+    . version.sh
+    [[ "$REBUILDING" == "0" ]] || die "REBUILDING should be 0, not $REBUILDING"
+    echo 'small meaningless change' > README
+    git commit -m 'test 2' README
+    ${BASEDIR}/gitversion.sh > version.sh
+    . version.sh
+    [[ "$REBUILDING" == "1" ]] || die "REBUILDING should be 1, not $REBUILDING"
+    
+}