diff --git a/.travis.yml b/.travis.yml
index 6e1f71b..334d70b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -16,7 +16,7 @@ install:
   - go get -v -t ./...
 
 script:
-  - make test
+  - make test-coverage
 
 after_success:
   - bash <(curl -s https://codecov.io/bash)
diff --git a/Makefile b/Makefile
index 699e34a..769def5 100644
--- a/Makefile
+++ b/Makefile
@@ -1,3 +1,7 @@
+COVERAGE_REPORT := coverage.txt
+COVERAGE_PROFILE := profile.out
+COVERAGE_MODE := atomic
+
 LINGUIST_PATH = .linguist
 
 $(LINGUIST_PATH):
@@ -6,6 +10,19 @@ $(LINGUIST_PATH):
 test: $(LINGUIST_PATH)
 	go test -v ./...
 
+test-coverage: $(LINGUIST_PATH)
+	@echo "mode: $(COVERAGE_MODE)" > $(COVERAGE_REPORT); \
+		for dir in `find . -name "*.go" | grep -o '.*/' | sort -u | grep -v './fixtures/' | grep -v './.linguist/'`; do \
+			go test $$dir -coverprofile=$(COVERAGE_PROFILE) -covermode=$(COVERAGE_MODE); \
+			if [ $$? != 0 ]; then \
+				exit 2; \
+			fi; \
+			if [ -f $(COVERAGE_PROFILE) ]; then \
+				tail -n +2 $(COVERAGE_PROFILE) >> $(COVERAGE_REPORT); \
+				rm $(COVERAGE_PROFILE); \
+			fi; \
+	done;
+
 code-generate: $(LINGUIST_PATH)
 	mkdir -p data
 	go run internal/code-generator/main.go