Repair Travis CI: shouldn't have changed directory

Author: brandon-rhodes

skyfield/documentation/files.rst

@@ -107,7 +107,7 @@ we will see that it looked for files in the current directory:
 
     Already exists: ./deltat.data
       Parsing with: parse_deltat_data()
-      Does not expire til: 2020-06-01
+      Does not expire til: 2020-09-01
     Already exists: ./deltat.preds
       Parsing with: parse_deltat_preds()
       Does not expire til: 2021-01-01

test-code.sh

@@ -1,6 +1,8 @@
 #!/bin/bash
-
-cd "$(dirname "${BASH_SOURCE[0]}")"
+#
+# This script should not change directory, because CI strategically runs
+# it from somewhere besides the repository root to prevent Skyfield from
+# being imported directly from its source tree.
 
 set -e
 if ! command -v assay >/dev/null
@@ -15,6 +17,8 @@ EOF
     exit 2
 fi
 if python --version | grep -q 'Python 2.7'
-then pyflakes skyfield/*.py
+then
+    d=$(python -c 'import skyfield as s; print(s.__file__.rsplit("/", 1)[0])')
+    pyflakes "$d"/skyfield/*.py
 fi
 exec assay --batch skyfield/tests

test-docs.sh

@@ -2,6 +2,8 @@
 
 set -e
 cd "$(dirname ${BASH_SOURCE[0]})"
+
+# Copy in files that would otherwise need to download.
 cp ci/* skyfield/documentation
 
 function cleanup {
@@ -11,3 +13,7 @@ function cleanup {
 trap cleanup EXIT
 
 make -C skyfield/documentation doctest
+
+# Remove the files we copied in.
+FILES="$(cd ci; ls *.*)"
+(cd skyfield/documentation; rm $FILES)