ci: test build outputs

This modifies CI to check that we generate completion files and a man
page.

We also enable tests on arm.

.travis.yml

@@ -1,5 +1,4 @@
 language: rust
-cache:    cargo
 env:
   global:
     - PROJECT_NAME: ripgrep
@@ -7,12 +6,16 @@ env:
 addons:
   apt:
     packages:
+      # For generating man page.
+      - libxslt1-dev
+      - asciidoc
+      - docbook-xsl
+      - xsltproc
+      - libxml2-utils
       # Needed for completion-function test.
       - zsh
       # Needed for testing decompression search.
       - xz-utils
-      # For generating man page.
-      - asciidoc
 matrix:
   fast_finish: true
   include:

ci/script.sh

@@ -7,14 +7,49 @@ set -ex
 . "$(dirname $0)/utils.sh"
 
 main() {
-    # disable_cross_doctests
+    # Travis sometimes caches the target directory, which makes testing the
+    # output of cargo a little trickier. So just wipe it.
+    cargo clean
+    # Test a normal debug build.
     cargo build --target "${TARGET}" --verbose --all
-    if [ "$(architecture)" = "amd64" ] || [ "$(architecture)" = "i386" ]; then
-        cargo test --target "${TARGET}" --verbose --all
-        "$( dirname "${0}" )/test_complete.sh"
-    fi
+
+    # Show the output of build.rs stderr.
+    set +x
+    find ./target/"$TARGET"/debug -name stderr | while read stderr; do
+      if [ -s "$stderr" ]; then
+        echo "===== $stderr ====="
+        cat "$stderr"
+        echo "====="
+      fi
+    done
+    set -x
+
     # sanity check the file type
-    file target/$TARGET/debug/rg
+    file target/"$TARGET"/debug/rg
+
+    # Apparently tests don't work on arm, so just bail now. I guess we provide
+    # ARM releases on a best effort basis?
+    if is_arm; then
+      return 0
+    fi
+
+    # Test that zsh completions are in sync with ripgrep's actual args.
+    "$(dirname "${0}")/test_complete.sh"
+
+    # Check that we've generated man page and other shell completions.
+    find ./target/"$TARGET"/debug/build/ripgrep-* -name 'out' | \
+        while read outdir; do
+          file "$outdir/rg.bash"
+          file "$outdir/rg.fish"
+          file "$outdir/_rg.ps1"
+          # man page requires asciidoc, and we only install it on Linux x86.
+          if is_linux; then
+              file "$outdir/rg.1"
+          fi
+        done
+
+    # Run tests for ripgrep and all sub-crates.
+    cargo test --target "${TARGET}" --verbose --all
 }
 
 main

ci/utils.sh

@@ -13,17 +13,6 @@ host() {
     esac
 }
 
-gcc_prefix() {
-    case "$TARGET" in
-        arm*-gnueabihf)
-            echo arm-linux-gnueabihf-
-            ;;
-        *)
-            return
-            ;;
-    esac
-}
-
 architecture() {
     case "$TARGET" in
         x86_64-*)
@@ -41,9 +30,41 @@ architecture() {
     esac
 }
 
-is_ssse3_target() {
-    case "$TARGET" in
-        x86_64*)  return 0 ;;
-        *)        return 1 ;;
+gcc_prefix() {
+    case "$(architecture)" in
+        armhf)
+            echo arm-linux-gnueabihf-
+            ;;
+        *)
+            return
+            ;;
+    esac
+}
+
+is_ssse3_target() {
+    case "$(architecture)" in
+        amd64) return 0 ;;
+        *)     return 1 ;;
+    esac
+}
+
+is_x86() {
+    case "$(architecture)" in
+      amd64|i386) return 0 ;;
+      *)          return 1 ;;
+    esac
+}
+
+is_arm() {
+    case "$(architecture)" in
+        armhf) return 0 ;;
+        *)     return 1 ;;
+    esac
+}
+
+is_linux() {
+    case "$TRAVIS_OS_NAME" in
+        linux) return 0 ;;
+        *)     return 1 ;;
     esac
 }