feat: add tests for local wsh file copy cmd (#1911)

This adds tests for the corner cases of the `wsh file copy` command. At
the moment, these focus on local copies since they are more easily
replicated.

---------

Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>

Author: oneirocosm

tests/copytests/cases/test000.sh

@@ -0,0 +1,12 @@
+# copy a file to one with a different name
+# ensure that the original exists
+set -e
+cd "$HOME/testcp"
+touch foo.txt
+
+wsh file copy foo.txt bar.txt
+
+if [ ! -f foo.txt ]; then
+    echo "foo.txt does not exist"
+    exit 1
+fi

tests/copytests/cases/test001.sh

@@ -0,0 +1,12 @@
+# copy a file to one with a different name
+# ensure that the destination file exists
+set -e
+cd "$HOME/testcp"
+touch foo.txt
+
+wsh file copy foo.txt bar.txt
+
+if [ ! -f bar.txt ]; then
+    echo "bar.txt does not exist"
+    exit 1
+fi

tests/copytests/cases/test002.sh

@@ -0,0 +1,18 @@
+# copy a file with contents
+# ensure the contents are the same
+set -e
+cd "$HOME/testcp"
+touch foo.txt
+echo "The quick brown fox jumps over the lazy dog" > foo.txt
+
+wsh file copy foo.txt bar.txt
+
+
+FOO_MD5=$(md5sum foo.txt | cut -d " " -f1)
+BAR_MD5=$(md5sum bar.txt | cut -d " " -f1)
+if [ $FOO_MD5 != $BAR_MD5 ]; then
+    echo "files are not the same"
+    echo "FOO_MD5 is $FOO_MD5"
+    echo "BAR_MD5 is $BAR_MD5"
+    exit 1
+fi

tests/copytests/cases/test003.sh

@@ -0,0 +1,12 @@
+# copy a file where source starts with ./
+# ensure the source file exists
+set -e
+cd "$HOME/testcp"
+touch foo.txt
+
+wsh file copy ./foo.txt bar.txt
+
+if [ ! -f foo.txt ]; then
+    echo "foo.txt does not exist"
+    exit 1
+fi

tests/copytests/cases/test004.sh

@@ -0,0 +1,12 @@
+# copy a file where source starts with ./
+# ensure the destination file exists
+set -e
+cd "$HOME/testcp"
+touch foo.txt
+
+wsh file copy ./foo.txt bar.txt
+
+if [ ! -f bar.txt ]; then
+    echo "bar.txt does not exist"
+    exit 1
+fi

tests/copytests/cases/test005.sh

@@ -0,0 +1,13 @@
+# copy a file where destination starts with ./
+# ensure the source file exists
+
+set -e
+cd "$HOME/testcp"
+touch foo.txt
+
+wsh file copy foo.txt ./bar.txt
+
+if [ ! -f foo.txt ]; then
+    echo "foo.txt does not exist"
+    exit 1
+fi

tests/copytests/cases/test006.sh

@@ -0,0 +1,13 @@
+# copy a file where destination starts with ./
+# ensure the destination file exists
+
+set -e
+cd "$HOME/testcp"
+touch foo.txt
+
+wsh file copy foo.txt ./bar.txt
+
+if [ ! -f bar.txt ]; then
+    echo "bar.txt does not exist"
+    exit 1
+fi

tests/copytests/cases/test007.sh

@@ -0,0 +1,13 @@
+# copy a file where source and destination start with ./
+# ensure the source file exists
+
+set -e
+cd "$HOME/testcp"
+touch foo.txt
+
+wsh file copy ./foo.txt ./bar.txt
+
+if [ ! -f foo.txt ]; then
+    echo "foo.txt does not exist"
+    exit 1
+fi

tests/copytests/cases/test008.sh

@@ -0,0 +1,13 @@
+# copy a file where source and destination start with ./
+# ensure the destination file exists
+
+set -e
+cd "$HOME/testcp"
+touch foo.txt
+
+wsh file copy ./foo.txt ./bar.txt
+
+if [ ! -f bar.txt ]; then
+    echo "bar.txt does not exist"
+    exit 1
+fi

tests/copytests/cases/test009.sh

@@ -0,0 +1,13 @@
+# copy a file to itself with the same literal name
+# ensure the operation fails and the file still exists
+
+set -e
+cd "$HOME/testcp"
+touch foo.txt
+
+wsh file copy foo.txt foo.txt >/dev/null 2>&1 && echo "copy should have failed" && exit 1
+
+if [ ! -f foo.txt ]; then
+    echo "foo.txt does not exist"
+    exit 1
+fi